## River Basin Management Plan Western Wales River Basin District Annex B: Water Body Status Objectives

Annex B Erratum sheet The following changes were made to this document in January 2011. 

Changes 
WBID 
Catchment 
Element 
Decision code deleted 
Decision code added 
GB110060029260 Loughor to Taf 
Fish 
B2a 
S2b 
GB110061030660 
South West Wales 
Fish 
B2a 
S2b 
GB110061031200 
South West Wales 
Fish 
B2a 
S2b 
GB110066059950 
Conwy and 
Clwyd 
Fish 
B2a 
S3b 
GB110102058970 
North West Wales 
Fish 
B2a 
S2b 
GB110058032360 
Ogmore to Tawe 
Fish 
n/a 
S2e 
GB110062039010 
South West Wales 
Fish 
n/a 
S2b 
GB110066059960 
Conwy and Clwyd 
Phytobenthos 
n/a 
S3b 

 

Contents 
 
B.1 
Introduction 
      3 
      3 
B.2 
The objectives of the Water Framework 
Directive 
      7 
B.3 
Catchments in the Western Wales River Basin District 
B.4 
Water body tables explained 
    10 
B.5 
Conwy and Clwyd river catchment  
    20 
B.6 
North West Wales river catchment 
  118 
B.7 
South West Wales river catchment 
  418 
B.8  
Loughor to Taf river catchment 
  685 
B.9 
Ogmore to Tawe river catchment 
  876 
B.10 
Groundwater 
  992 
B.11 
Estuaries and Coastal Waters 
1038 
1106 
B.12 
Canals, surface water transfers and SSSI 
ditches 


B.1 Introduction 
 
This annex sets out the environmental objectives for each of the 814 water bodies in the 
Western Wales River Basin District. This information is presented in tables; one table for 
each water body.   The annex is organised so that the tables are grouped by catchments.  
Groundwater, estuary and coastal water bodies and canals, surface water transfers and 
Sites of Special Scientific Interest (SSSI) ditches are grouped separately at a river basin 
district level. 
 
In this annex we explain the reasoning behind the status objectives for each water body.  
You can find further information on how we considered and assessed the actions to meet the 
objectives in Annex E.  
 
B.2 The objectives of the Water Framework Directive 
 
The Water Framework Directive (WFD) sets a number of different objectives.  In summary 
the environmental objectives for surface waters are: 
 
- 
  Prevent deterioration in status for water bodies 

- 
Aim to achieve good ecological and good surface water chemical status in water bodies1 
by 2015 
- 
For water bodies that are designated as artificial or heavily modified, aim to achieve good 
ecological potential by 2015 
- 
Comply with objectives and standards for protected areas where relevant 
- 
Reduce pollution from priority substances and cease discharges, emissions and losses of 
priority hazardous substances. In summary the environmental objectives for groundwater are: -    Prevent deterioration in the status of groundwater bodies 
-    Aim to achieve good quantitative and good groundwater chemical status2 by 2015 in all 
those bodies currently at poor status 
-    Implement actions to reverse any significant and sustained upward trends in  pollutant 
concentrations in groundwater 

-    Comply with the objectives and standards for protected areas where relevant 
-    Prevent or limit the input of pollutants into groundwater. 
  
Good status 
 
The Directive sets a target of aiming to achieve at least 'good status' in all waters.  For 
surface waters there are two separate classifications for water bodies; ecological and 
chemical.  For a surface water body to be in overall 'good' status both ecological and 
chemical status must be at least 'good'.  Ecological status is recorded on a scale high, good, 
moderate, poor and bad; chemical status is recorded as good or fail. If a water body is at less 
than good ecological status we also report how certain we are that the water body does not 
meet good status.  For groundwater, there are also two separate classifications for water 
bodies; quantitative and chemical.  For a groundwater water body to be in overall 'good' 
status, both quantitative and chemical status must be 'good'. Groundwater status is recorded 
as good or poor.  

                                                     

 
Status is measured through a series of specific standards and targets that have been 
developed by the UK administrations, supported by the Water Framework Directive UK 
Technical Advisory Group (UKTAG; www.wfduk.org). You can find more information about 
how we monitored and classified water bodies in Annex A. 
 
Artificial or heavily modified water bodies 
 
Whilst good ecological status is defined as a slight variation from undisturbed natural 
conditions in natural water bodies, artificial and heavily modified water bodies are unable to 
achieve natural conditions. Instead, artificial and heavily modified water bodies have a target 
to achieve good ecological potential, which recognises their important uses, whilst making 
sure ecology is protected as far as possible. Ecological potential is also measured on the 
scale high, good, moderate, poor and bad. The chemical status of these water bodies is 
measured in the same way as for natural water bodies.  
 
Protected Areas  
 
The Directive specifies that areas requiring special protection under other EC Directives and 
waters used for the abstraction of drinking water are identified as protected areas. These 
areas have their own objectives and standards.  
 
Article 4 of the Water Framework Directive requires Member States to achieve compliance 
with any standards and objectives set for each protected area by 22 December 2015, unless 
otherwise specified in the Community legislation under which the protected area was 
established. Where a protected area also has a surface water or groundwater objective the 
most stringent objective applies.  
 
The objectives reported in this annex (B) are those related to Water Framework Directive 
water body status only. However, where a protected area coincides with a water body, this is 
indicated in the water body tables in this annex.  The presence of a Site of Special Scientific 
Interest (SSSI), which is not also designated as a protected area (under the Birds Directive 
or Habitats Directive), is indicated in the water body tables.   
 
It is not possible to link the water body status objectives in this annex with the protected area 
objectives in Annex D since the two sets of objectives are not always directly comparable. In 
addition, in some cases the size and scale of water bodies under the Water Framework 
Directive are not the same as waters identified as protected areas.  
 
Some areas may require special protection under more than one EC Directive. In these 
cases, all of the appropriate objectives and standards must be achieved. More information 
about protected areas and their objectives and standards are shown in Annex D. 
 
Prevent or limit 
 
The Water Framework Directive and the new Groundwater Directive (2006/118/EC) extend 
the existing groundwater quality protection regime implemented via the current Groundwater 
Regulations. New Groundwater Regulations are expected during 2009 to incorporate the 
changes.   Hazardous substances3 must be prevented from entry into groundwater and the 
entry into groundwater of all other pollutants must be limited to prevent pollution.   A wider 

## 

range of substances and activities are controlled under the new Directives and there are 
fewer exemptions compared with the existing regime. The aim is to make the existing regime 
both more flexible and risk based but also more effective, in particular, in controlling diffuse 
pollution. Actions to prevent or limit the input into groundwater of pollutants are a high priority 
and can be viewed as a principal means of achieving all of the other groundwater quality 
objectives. 
 
Implement measures to reverse significant and sustained upward trends 
 
Actions to reverse any significant and sustained upward trends in pollutant concentrations in 
groundwater must be implemented in the first river basin management planning cycle, or in 
later cycles as soon as a trend has been identified. It is not possible to use a less stringent 
objective or extended deadline for this requirement. 
  
Prevent deterioration in status and exceptions 
 
Other than in very exceptional circumstances, the objective to prevent deterioration in status 
of a water body must always be met, for example, when the deterioration is caused by 
physical modifications.  These new activities may change the physical characteristics of a 
surface water body, which may be the case in building new flood defences or the water level 
in a groundwater body, where a new public supply borehole is put into use.  Even in these 
cases it is necessary to comply with a number of conditions before this derogation can be 
relied upon. 
 
Water bodies where deterioration of status has been permitted under the terms of 
WFD Article 4(7) 

One of the objectives of the Water Framework Directive is to ensure the status of rivers, lakes, estuaries, coastal waters and groundwater is protected from deterioration. This objective applies to all water bodies no matter what their status. However, in specific circumstances, the Directive does provide for exemptions or reasons why this objective should not be applied. Although protecting the water environment is a priority, some new modifications may provide important benefits to human health, human safety and/or sustainable development. Such benefits can include: 

- public water supply; - flood defence/alleviation; - hydropower generation; - navigation. 
 
It is sometimes not possible to undertake such activities without causing deterioration of status to the water body, or preventing the water body from reaching its environmental objectives. The benefits such developments can bring need to be balanced against the social and economic benefits gained by maintaining the status of the water body.  

## 

Project Description 
Project/Scheme 
Water 
Responsible 
Title 
body ID 
Organisation 
 
South West Weirs Improvement - Felin-y-Cwm Gauging Station 
GB110060 029370 
(and downstream GB110060 036250)  
Environment Agency  
River Sawdde at Llangadog (SN71223 26570) approximately 
3km upstream River Tywi Installation of a new flat V weir downstream of existing weir for hydrological monitoring. Removal of original deteriorating weir.  
Article 4.8 & 4.9 - 
Article 4.9 -  
Consistent with 
Article 4.7 -  
Prevention of 
Implementation of 
All 
Article 4.7 -  
Article 4.7 - 
Other Water 
Other EU 
Mitigation 
Practicable 
Overriding 
Bodies 
Directives and 
Measures 
Alternatives? 
Interest? 
Meeting WFD 
Guarantees Same 
Applied? 
Objective? 
Level of 
Protection? 
Yes  
No - other 
Over-riding 
Yes - Appropriate 
No - no risks 
gauging 
public interest 
Assessment 
to upstream, 
technologies not 
applies  
completed and 
downstream of 
suitable for site 
concluded no 
ground Water 
conditions  
significant impact 
Bodies 

B.3 Catchments in the Western Wales River Basin District 
 
You can use the sections below to find information on the management catchments within the Western Wales River Basin District, these are river catchments, groundwater, estuaries, coastal catchments, canals, surface water transfers and Sites of Special Scientific Interest (SSSI) ditches.  The locations of the river management catchments are shown in Figure B.3.1. B.5 
Conwy and Clwyd river catchment 

B.6 
North West Wales river catchment 
B.7 
South West Wales river catchment 
B.8 
Loughor to Taf river catchment 
B.9 
Ogmore to Tawe river catchment 
B.10 
Groundwater 
B.11 
Estuaries and Coastal waters 
B.12 
Canals, surface water transfers and SSSI ditches 
 Each river catchment section contains: - 
a map showing the river and lake water bodies within the catchment; 

- 
a table summarising status objectives across the catchment; 
- 
tables, one per water body, detailing current status and objectives.  
 
The groundwater, estuaries and coastal waters and canals, surface water transfer and SSSI ditches sections each contain: - 
a map showing the relevant water bodies within the river basin district; 
- 
tables, one per water body, detailing current status and objectives. 

## The Status Objectives, By Water Body Type, For The Western Wales River Basin District Are Summarised In Figure B.3.2 Below. District

Good or high in 2015 
Good or high in 2021 
Good or high in 2027 
Less than good in 2015 
Total number of water bodies 
Water body category 
Good or high now 
Overall 
Rivers 
184 
238 
238 
676 
438 
676 
Lakes 
20 
20 
20 
62 
42 
62 
Coastal 
16 
16 
16 
24 
8 
24 
Estuaries 
8 
8 
8 
27 
19 
27 
Groundwater 
15 
15 
15 
25 
10 
25 
Natural 
Rivers 
165 
217 
217 
604 
387 
604 
Lakes 
2 
2 
2 
19 
17 
19 
Coastal 
14 
14 
14 
18 
4 
18 
Estuaries 
4 
4 
4 
16 
12 
16 
Groundwater 
15 
15 
15 
25 
10 
25 
Artificial/Heavily modified water bodies 
HMWB 
35 
37 
37 
122 
85 
122 
AWB 
8 
8 
8 
10 
2 
10 

 
 
You can look at the information in this annex in another way through the 'What's in your backyard?' (WIYBY) feature on our website. This allows you to search by place name or postcode to get the details of an individual water body. Link through www.environmentagency.gov.uk/WIYBY. This will be available in early 2010 following publication of this plan. 

B.4 Water body tables explained 
 
Figures B.4.1. to B.4.4 below (and the supporting 'explanatory notes' which follow) provide explanations of the information included in the water body tables.    
 

body ID is the unique identification code for each water body in England and Wales. The local name of the water body is given if available. Clicking on the ID will link to the water 
body in the WIYBY feature on the Environment Agency's website (please 
note that this link may only work for a limited period of time, dependent on future 
changes to the website) 
heavily modified bodies, the potential. status of the 
water body. 
 
SSSI (Non-N2K related):  Notes 
whether a water body includes a Site of Special Scientific Interest (SSSI) which is not a Natura 2000 Protected Area. 
Hydromorphological Designation & Reason for 
designation: Identifies if the water body has been 
designated as heavily modified or artificial and the 
reason for this designation (see Note A) 
Downstream water body ID:  The 
unique water body ID for the next water body downstream (only applicable for rivers and transitional water bodies). 
Protected area designation: If the 
water body has been identified as a protected area this gives the designation and the directive or directives under which it has been defined (including designation as Drinking Water Protected Areas under the WFD).  

## 

 

Ecological status or potential: Current classification status is shown.  Ecological classification comprises: 
- 
The condition of biological elements, for example fish 
- 
Concentrations of supporting physico-chemical elements, for example ammonia levels 
- 
Concentrations of specific pollutants, for example copper. 
- 
Supporting conditions of morphology and hydrology 
- 
And for high status, largely undisturbed hydromorphology   
Ecological status is recorded on the scale of high, good, moderate, poor or bad.  For water bodies that are 
heavily modified or artificial, the results of ecological potential classification may be determined by assessing 
the level of mitigation actions required to achieve good potential and that do not have a significant impact on the specified uses.  For water bodies for which we do not have monitoring data, the classification recorded here is based on modelling or estimations.  Further information on classification see Annex A. 
                        

## 

 

## 

 

Biological elements: 
A list of the biological 
elements of status 
classification for which 
monitoring or 
modelling data are 
available.
                                                                                                  Supporting elements: 
                                                                                                  A list of the physico-
                                                                                                  chemical elements of 
                                                                                                  status classification for 
                                                                                                  which monitoring or 
                                                                                                  modelling data are 
                                                                                                  available. 

## 

 

Supporting 
conditions: A list of 
the supporting 
morphological 
conditions and 
hydrological 
conditions (quantity & 
dynamics of flow) for 
which monitoring or 
modelling data are 
available. These 
elements show as 
'support good', 'high' 
or 'not support good' 
only. 

 

## 

 
Mitigation measures:  
A list of the mitigation actions, stating which are in place and adequate and which were not in place resulting in moderate ecological potential or worse' being assigned. See Note C for more information. 
Chemical status: The 
current classification status for the water body against the environmental standards for chemicals that are priority substances and priority hazardous substances. Chemical status is recorded as good or fail - See Note E. 
Chemical elements: A list of the 
chemical elements of status classification for which monitoring or modelling data are available. 

Current status (and certainty less than good): This is 
the current status classification, with level of certainty (of 
being less than good). See Note B for explanation of 
certainty. Level of certainty is not supplied for Artificial or 
Heavily Modified water bodies (AWB/HMWB). 

Ecological potential 
assessment: Current 
ecological potential for the AWB/HMWB is given, with a prediction of when the water body will meet good 
ecological potential. More information in Note C 
Predicted status by 
2015: The predicted 
status for each of the elements or conditions 
listed by 2015 
Justification for not achieving good status 
by 2015: The reason for 
an alternative status objective if the default status objective has not been used. This is shown with the relevant decision tree codes(s) in brackets. See Note D for more information on these codes.

Descriptions are the same as surface water bodies except where stated. 

for 1) the quantitative elements relevant to the water body and 2) the chemical elements relevant to the water body. Note that this is for status only.  There are separate objectives for reversing trends and for preventing or limiting the inputs of pollutants to groundwater. 
on wetlands, impacts on surface water).  Status good or poor.  For more 
pollutants concentration and putting actions in place to reverse those trends is a separate objective for groundwater quality.  This box identifies whether the body is subject to such a trend or not. 
status for the water body, considering the results of the five tests that determine chemical status (General Chemical Assessment, saline intrusions, impacts on wetlands, impacts on surface water, Drinking Water Protected Area).  For more information on confidence see Note B 

Explanatory notes 
  
Note A: Hydromorphological Designation & Reason for designation 
 
These fields in the water body tables identify whether the water body has been designated 
as being heavily modified or artificial for one or more of the following reasons (see also 
Annex I):  Drinking Water; Flood Protection; Irrigation; Land Drainage; Navigation; Other; 
Power Generation; Recreation; Structure; Urbanisation; Wider Environment; Water 
Regulation (impoundment release); Water Regulation (strategic transfer); Water Storage - 
non-specific; Coastal Protection; Shell Fisheries; Fin Fisheries; Dredge Disposal. 
 
Note B: Certainty and confidence 
 
Surface waters  
Our assessments of surface water body status are accompanied by a description of how 
certain we can be that the water body is below good status4. These assessments are 
reported in this annex for each quality element in each water body, and for the overall water 
body status.  
 
The Environment Agency has used three expressions to describe how certain we are that a 
water body does not achieve the objective of good status. Although the terms confidence and 
certainty can be interchangeable, the Environment Agency has taken the decision to use an 
expression of certainty to describe all surface water classifications.  
 

| Threshold                    | How certain we are that       |
|------------------------------|-------------------------------|
| the water body is less       |                               |
| than good status             |                               |
| Very certain                 | ≥95% certain that the water   |
| body does not meet the       |                               |
| objective of good status     |                               |
| Quite certain                | ≥75to ≤95% certain that the   |
| water body does not meet the |                               |
| objective of good status     |                               |
| Uncertain                    | >50% to <75% certain that the |
| water body does not meet the |                               |
| objective of good status     |                               |

 
This description of certainty takes account of the precision of our results. Precision is 
influenced by natural variation in the data over time, as well as errors in the assessment 
process. The Environment Agency can assess how the probability of misclassification 
changes in relation to the amount of sampling for each biological element. This allows us to 
estimate the most likely levels of certainty we can achieve with a given sampling effort. For 
example, a diatom sample from spring and autumn will allow no more than a 70% certainty of 
being at a particular status, but often gives high certainty (>95% ) of being somewhere below 
good status. 
 

                                                     

In some situations our expression of certainty is based on weight of evidence or expert opinion. There are three examples of this: - 
The way different water bodies respond to nutrient enrichment can be complicated. 
Sometimes we find that the water body does not meet the required standard for phosphorus but the biological community shows no sign of damage. In such situations it would be misleading to say we are very certain that the water body is at less than good status. In other situations, the water body does not meet the required standard for phosphorus, and the biological community - the diatoms and macrophytes - also show signs of damage. The result for each element on its own may be uncertain. But the fact that all elements suggest the same thing - weight of evidence that there is an impact - means that we become more certain that there is a problem. So we modify the overall certainty according to the statistical certainty of each test.  Where this has happened it is indicated by "WoE" (weight of evidence) against the certainty rating. 
- 
As our monitoring programme for estuarine and coastal water bodies is new, certainty in 
our draft classifications for these water bodies is partly based on the amount of data available for each of the classification tools. We say we are uncertain where our data sets are limited. Our marine monitoring programme will continue to provide more data, so the certainty of our assessments in estuarine and coastal waters should steadily improve over time.  
- 
We don't yet have assessments for all of our water bodies. Where we lack data we have 
used expert judgements to provide an initial assessment of the water body (see Annex A 
for more detail) and this is stated in the water body tables as 'Note: Current Status and Status Objectives for this water body are based on Expert Judgement'. Where expert judgement has been used to provide a classification we can only ever be uncertain in our assessment.   

 
Where a water body is Good or High Ecological Status and biology is not classified (i.e. no 
biology data was used) then this is indicated with 'no biology data' 
 
Groundwater status  
Groundwater classification comprises four quantitative and five chemical status tests. Each 
of the status test results is reported as a face value class accompanied by an assessment of 
our confidence in the result.  
 
For groundwater, confidence is reported as a qualitative statement, and is used as an 
indicator for prioritising action. All poor status classifications for groundwater, irrespective of 
confidence, will require some form of action. This is because the classification criteria for 
both chemical and quantitative status comprise a rigorous weight of evidence approach.  
Further details of how confidence is determined are given in Annex A.  
 
The decisions on which level of confidence to assign to each of the tests undertaken to 
determine status are reached by using a combination of statistical and weight of evidence 
criteria. The principles for this are outlined in the UK TAG paper 'Reporting Confidence in 
Groundwater Status Assessments' (available at 
http://www.wfduk.org/tag_guidance/Article_08/Groundwater confidence).  
 
As a principle guiding the assessment of confidence in each of the individual status tests, the 
key criteria are a) the strength of the overall "weight of evidence" supporting the status 
assessment and b) a combined assessment of the monitoring data in terms of the magnitude 
of overall departure from the poor/good status boundary and the variability of the data.  
 
Confidence in chemical status and quantitative status will be determined and reported 
separately. For poor status groundwater bodies, the highest level of confidence from each of 

the individual tests should be reported. For good status groundwater bodies, the lowest level of confidence from each of the individual tests should be reported. Note C:  Explanation of hydromorphological measures 
 
The assessment of ecological potential looks at mitigation measures which relate to hydromorphological pressures and ecological impacts that are present in Artificial and Heavily Modified water bodies (AWB/HMWBs). Each AWB/HMWB is designated for at least one use.  Please see 'reason for designation' in the water body objective tables.  For each of these water body uses we have defined a number of associated mitigation measures that are required to reduce the hydromorphological impacts of the use.  This is in line with the UK TAG guidance which can be found at:  www.wfduk.org/st_workshops/LibraryPublicDocs/gep_hmwb_final For a water body to reach GEP all the associated mitigation measures need to be in place. For each AWB/HMWB we reviewed, mitigation measures fit into one of these categories: 

- 
in place for the water body in question and operating adequately OR  
- 
not applicable to that particular water body - some measures have been screened 
out during the assessment process because they could not be put in place without significantly adversely affecting the use of the water body or the wider environment, 
or they are not practicable given the physical characteristics of the water body. OR 
- 
are required to reduce the hydromorphological impacts on ecology and to achieve 
good ecological potential or better. 
 
In the water body objective tables in Annex B mitigation measures relating to ecological potential are listed for each AWB/HMWB as follows: 

a) mitigation measures that are in place and adequate are identified as "in place" and b) mitigation measures that are required to reach Good Ecological Potential or better are 
identified as "not in place". 

## 

Mitigation measures that are not applicable are not included in these tables. 
 
In AWB/HMWBs currently classified as moderate ecological potential or worse for 
hydromorphological pressures there is at least one mitigation measure that is not currently in 
place or has not been screened out on the basis of practicability or impact on use or the 
wider environment.   
 
It should be noted that mitigation measures identified as "not in place" is a comprehensive list 
of actions that could be adopted, rather than the final proposed actions. Further appraisal is 
required to relate these general measures to specific actions within a water body.  Specific 
actions that will be occurring appear in Annex C. 
 
We have appraised these mitigation measures, including: 

- 
mapping these potential measures to existing Environment Agency plans (such as 
medium term flood risk management plans) and local schemes (see Annex E for explanation of mapping exercise)  
- 
working with co-deliverers to identify options for implementing these measures, 
where it is their management and/or structures that contribute to the hydromorphological pressure/s 
- 
assigned measures to a particular sector, where this is possible, and aligned where 
possible with any sectoral plans and processes 
- 
taken account of comments received as part of the consultation process on the draft 
river basin management plans. 

 
Some measures alone or in combination may only achieve a slight ecological improvement. 
In these cases the measures only contribute to maximum ecological potential. Where we are 
confident of this, the measure/s will not be required to achieve good ecological potential. 
Currently we are not able to predict slight ecological benefit satisfactorily, but as our 
understanding increases we will be able to assess the mitigation measures fully. 
 
For AWB/HMWBs designated for water supply use and currently not achieving GEP,  a 
programme of investigation in partnership with water companies is planned.  This will enable 
us to identify appropriate and cost effective measures for implementation in the second and 
third River Basin Management Plans. 
 
Note D: Decision trees codes 
 
Decision tree codes have been used to indicate how we have made decisions about 
alternative objectives. Each pressure has a unique decision tree with a set of decision tree 
codes which are shown in the water body tables, for example S1a is from Sediments tree, 
P1a from the Phosphorus tree. These decision trees show the main steps taken in appraising 
the potential measures to address a pressure and set out which of those decisions can lead 
to the setting of an alternative objective.   Further information on decision tree codes can be 
found in Annex E. 
 
Note E: Chemical status reporting 
 
An assessment of chemical status is required in water bodies where priority substances and 
other specific pollutants are known to be discharged in significant quantities. If a water body 
is labelled as "Does not require assessment" it is because these pollutants are not 
discharged into this water body in significant quantities.  
 
The Water Framework Directive requires us to classify chemical status as either Good or Fail 
(i.e. failing to achieve good).  
 
The Directive also requires us to produce an overall status assessment (and objective) for 
water bodies, inferring that we need to combine ecology and chemistry into one overall 
assessment. To do this, we convert our chemical status assessments using the following 
translation: Good = High, Fail = Moderate. 
  
The translation of Good = High was agreed by UKTAG on the basis that it would be unfair to 
downgrade an otherwise pristine water body (one that reaches high for all other elements) 
simply because the chemical status can only ever achieve a maximum of Good. 
  
Therefore, in our Annex B tables we report: 

- 
the status of individual chemical elements as High or Moderate (so the translation described above can occur) 
- 
the current chemical status as Good or Fail (as required by the Directive) 
 
Note F:  Summary of how exceedances of groundwater quality standards/threshold values at monitoring network sites have been used in the assessment of chemical status of groundwater bodies The Groundwater Daughter Directive (GWDD) states that for assessing chemical status, we should use prescribed groundwater quality standards for nitrates and pesticides, and locally derived threshold values for other pollutants that have been identified as contributing to the characterisation of the groundwater bodies as being at risk of failing to meet one or more of its environmental objectives.  
 
Threshold values are groundwater quality standards approved by Defra/Welsh Assembly Government (WAG) for the purpose of assessing groundwater chemical status.  They can be set nationally, or on a local groundwater body scale.  Threshold values are triggers that if exceeded at groundwater monitoring points require us to investigate whether the conditions for good status have been met.  They do not represent the boundary between good and poor status. The EU (GWDD) groundwater quality standards prescribed for nitrate and pesticides have also been used in the assessment process in the same way. Note however that threshold values for these pollutants may be established at lower concentrations to ensure that all status objectives are being met.  All this follows the requirements of the GWDD. Note that the groundwater monitoring points used for Water Framework Directive classification are those included in the Environment Agency's national groundwater quality monitoring programme. 

 
If standards and/or threshold values are not exceeded at any of the relevant monitoring points within the groundwater body then, in accordance with the GWDD, the groundwater body is at good status and no further investigation is necessary. The standards and conditions that we apply to environmental permits should reflect the need to meet all Water Framework Directive objectives, including good chemical status, but these permit conditions are not threshold values. 

 
Threshold values have been derived for each of the tests for good chemical status.  Once each of the relevant tests for a groundwater body has been applied the individual tests must then be assessed together, on a one-out all-out basis.  The most stringent relevant threshold for each pollutant will be reported for the groundwater body.  This indicates that the threshold will apply to least one monitoring point within the groundwater body.  Threshold values for a single substance could vary across a groundwater body, particularly for those substances where there is a highly variable natural background concentration.  For simplicity, we have avoided this wherever possible, but it is needed in some cases. 

 
The threshold value for each test is appropriate to the receptor being considered in that test, e.g. a groundwater abstraction, an associated surface water body, or a groundwater dependent terrestrial ecosystem.  The way in which we have compared monitoring data to the thresholds values during classification varies between the individual classification tests. See the table below. 

 
If a threshold value has been exceeded, we have investigated whether the pollution is of sufficient magnitude to prevent the groundwater body achieving its status objectives under the Water Framework Directive (i.e. it is not just a localised impact). This has been undertaken, for example, using status assessments for surface ecosystems, assessments of loadings to surface receptors or aggregations of groundwater data. 

 
Only where the concentration of pollutants exceeds the groundwater chemical threshold, and any supporting evidence confirms the presence of an impact that compromises the achievement of Water Framework Directive status objectives, have we classified the groundwater body as at poor status. Where there was insufficient data to conduct a particular test, then in the absence of contrary information, the groundwater body has been assigned good status for that test, but with low confidence in this assessment.  We will aim to undertake additional monitoring and/or investigation so that the test can be properly conducted at the next round of classification. 

| Status classification test            | Where threshold value applies         |
|---------------------------------------|---------------------------------------|
| Relevant individual monitoring points |                                       |
| e.g. those in areas at risk from      |                                       |
| intrusion                             |                                       |
| Saline or other intrusions (where     |                                       |
| poor quality water has been pulled    |                                       |
| into the body as a result of          |                                       |
| groundwater abstraction)              |                                       |
| Impact on Surface Water Bodies        | Relevant individual monitoring points |
| e.g. those close to the surface water |                                       |
| body                                  |                                       |
| Impact on Wetlands (groundwater       |                                       |
| dependent terrestrial ecosystems)     |                                       |
| Relevant individual monitoring points |                                       |
| e.g. those close to the wetland       |                                       |
| Drinking Water Protected Areas        | Relevant individual monitoring points |
| e.g. those that are abstractions used |                                       |
| for drinking water                    |                                       |
| General Chemical Assessment           | Aggregated across the body, e.g.      |
| compared to groundwater body          |                                       |
| average concentration(s).             |                                       |

 
Note G: Summary of how groundwater body chemical trend assessment was carried 
out. 
 
The Water Framework Directive and the Groundwater Daughter Directive require us to 
identify statistically and environmentally significant upward pollutant trends in groundwater 
bodies. This section describes the procedure we used to carry out this assessment.  
 
1. We collated groundwater quality monitoring data using data between 1997 and 2007.  
     The data came from both our National Groundwater Quality Monitoring Network and 
     water company monitoring where this was made available. 

2. We used a simple modelling tool to calculate whether these data showed a statistically 
significant upward trend.  The tool was specifically designed and developed for this 
purpose, and uses two different statistical tests to assess trends in the data.  If a statistically significant trend was detected the tool also predicted the expected pollutant concentration in 2021.   
3. We then assessed the environmental significance of each of the significant upward 
trends. This was done by comparing the predicted pollutant concentration in 2021 to the threshold value(s) for the relevant groundwater body chemical classification test.  A trend 
is environmentally significant if the predicted concentration in 2021 is greater than one or more threshold values. Threshold values are explained in Note E.   
 A map showing which groundwater bodies have statistically and environmentally significant trends can be seen in Annex A. Note H: Starting point for reversing the trend This is the pollutant concentration measured in the groundwater body at which we must implement actions to reverse upward trends.  The default is 75% of the threshold value, unless we can justify a later starting point (because the rise in concentrations is low and there is less risk to the environment) or an earlier starting point (because the risk to the environment is high).  

## B.5  Conwy And Clwyd River Catchment Rivers And Lakes There Are 63 River Water Bodies (Of Which 16 Are Designated As Heavily Modified) And 9 Lake Water Bodies (Of Which 8 Are Designated As Heavily Modified) Within The Conwy And Clwyd River Catchment.

Status objectives for rivers and lakes in the Conwy and Clwyd river catchment Water body category 
Good or high now 
Good or high in 2015 
Good or high in 2021 
Good or high in 2027 
Less than good in 2015 
Total number of water bodies 
Natural 
Rivers 
24 
30 
30 
47 
17 
47 
Lakes 
0 
0 
0 
1 
1 
1 
Artificial/Heavily modified water bodies 
HMWB 
10 
11 
11 
24 
13 
24 
AWB 
0 
0 
0 
0 
0 
0 

Water body tables for rivers and lakes in the Conwy and Clwyd catchment  
 
This section contains detailed information on the current status and objectives for river and lake water bodies in the catchment. The tables are arranged by water body type (in the order rivers then lakes) and by map code number within these groupings. Note: In the following water body tables, only the relevant elements of the status objectives (shown under the orange sub headings) are shown. 

River - R1
Waterbody Category and Map Code.: 
GB110066059760
Waterbody ID and Name: 
SH 87989 69632
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066060020
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Elwy - Melai to  Gallen 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R2
Waterbody Category and Map Code.: 
GB110066059770
Waterbody ID and Name: 
SH 95840 69711
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer), Water Storage - non-specific 
GB110066060020
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Invertebrates 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Aled - Elwy to Deunant 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R3
Waterbody Category and Map Code.: 
GB110066059780
Waterbody ID and Name: 
SH 75830 71972
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Roe
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R4
Waterbody Category and Map Code.: 
GB110066059790
Waterbody ID and Name: 
SH 80304 70270
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Hiraethlyn
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R5
Waterbody Category and Map Code.: 
GB110066059800
Waterbody ID and Name: 
SH 80690 74470
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Conwy estuary east 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R6
Waterbody Category and Map Code.: 
GB110066059810
Waterbody ID and Name: 
SH 90106 74814
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059860
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulas - upper
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R7
Waterbody Category and Map Code.: 
GB110066059820
Waterbody ID and Name: 
SH 80939 75620
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Conwy estuary east 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R8
Waterbody Category and Map Code.: 
GB110066059830
Waterbody ID and Name: 
SH 91540 74775
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059860
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulas - un-named tributary 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R9
Waterbody Category and Map Code.: 
GB110066059870
Waterbody ID and Name: 
SH 86829 78039
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641011650000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Y Flynnon
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R10
Waterbody Category and Map Code.: 
GB110066059880
Waterbody ID and Name: 
SH 84519 77107
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641011650000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant y Groes
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R11
Waterbody Category and Map Code.: 
GB110066059890
Waterbody ID and Name: 
SH 79742 78922
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Wydden
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R12
Waterbody Category and Map Code.: 
GB110066059900
Waterbody ID and Name: 
SH 81688 77987
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ganol
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R13
Waterbody Category and Map Code.: 
GB110066059920
Waterbody ID and Name: 
SJ 15337 69461
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059930
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Wheeler - upper
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R14
Waterbody Category and Map Code.: 
GB110066059930
Waterbody ID and Name: 
SJ 10498 71331
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059960
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2q, B2r, 
S3e) 
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
Poor (Very Certain)
Poor
Technically infeasible (B2q, B2r, 
S2e) 
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Wheeler - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R15
Waterbody Category and Map Code.: 
GB110066059940
Waterbody ID and Name: 
SJ 14827 71692
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059930
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Wheeler - un-named upper tributary 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R16
Waterbody Category and Map Code.: 
GB110066059970
Waterbody ID and Name: 
SJ 01580 77713
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB541006608000
Downstream Waterbody ID:

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named Clwyd estuary west 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R17
Waterbody Category and Map Code.: 
GB110066059980
Waterbody ID and Name: 
SH 96768 78266
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB541006608000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Appropriate timing (vegetation control) 
In Place
Appropriate vegetation control technique 
In Place
Selective vegetation control regime 
In Place
Flood bunds (earth banks, in place of floodwalls)
In Place
Set-back embankments 
Not In Place
 
Surveillance site:  No
Gele
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R18
Waterbody Category and Map Code.: 
GB110066059990
Waterbody ID and Name: 
SJ 06385 79260
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB GB541006608000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R19
Waterbody Category and Map Code.: 
GB110066060000
Waterbody ID and Name: 
SJ 03839 82306
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB541006608000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Educate landowners on sensitive management practices (urbanisation)
In Place
Appropriate techniques (invasive species) 
In Place
Appropriate timing (vegetation control) 
In Place
Appropriate vegetation control technique 
In Place
Selective vegetation control regime 
In Place
Flood bunds (earth banks, in place of floodwalls)
In Place
Set-back embankments 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Rhyl cut
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R20
Waterbody Category and Map Code.: 
GB110066060010
Waterbody ID and Name: 
SJ 08841 84217
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB641011650000
Downstream Waterbody ID:

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Educate landowners on sensitive management practices (urbanisation)
In Place
Appropriate techniques (invasive species) 
In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Prestatyn Gutter
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R21
Waterbody Category and Map Code.: 
GB110066060020
Waterbody ID and Name: 
SJ 00426 71708
National Grid Reference: 
Fail
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2015, Good Chemical Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer) 
GB541006608000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Uncertain)
Surveillance site:  No
Elwy - Clwyd to Afon Melai 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R22
Waterbody Category and Map Code.: 
GB110066060030
Waterbody ID and Name: 
SH 80499 59248
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Macrophytes 
High 
High
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Uncertain)
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
 
Surveillance site:  Yes
Conwy - tidal limit to Merddwr 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Tributyltin Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R23
Waterbody Category and Map Code.: 
GB110066054660
Waterbody ID and Name: 
SJ 12440 50192
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059960
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a, S3b)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Hesbin
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R24
Waterbody Category and Map Code.: 
GB110066054690
Waterbody ID and Name: 
SJ 04417 56847
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066054700
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a, B2o)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Corris
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R25
Waterbody Category and Map Code.: 
GB110066054700
Waterbody ID and Name: 
SJ 07056 57556
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015 Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB110066054740
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R26
Waterbody Category and Map Code.: 
GB110066054710
Waterbody ID and Name: 
SJ 03477 57665
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066054700
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(M5a) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
Moderate (Very Certain)
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Clywedog - Afon Corris to Rhyd Galed 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R27
Waterbody Category and Map Code.: 
GB110066054730
Waterbody ID and Name: 
SJ 08149 62278
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Freshwater Fish Directive No Not Designated A/HMWB GB110066054750
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Nant Mawr
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R28
Waterbody Category and Map Code.: 
GB110066054740
Waterbody ID and Name: 
SJ 10628 60482
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066054750
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Clywedog - Nant Mawr to Melindwr 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R29
Waterbody Category and Map Code.: 
GB110066054750
Waterbody ID and Name: 
SJ 08752 64268
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB110066059960
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Surveillance site:  No
Clywedog - Clwyd to Nant Mawr 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R30
Waterbody Category and Map Code.: 
GB110066054760
Waterbody ID and Name: 
SH 81186 43892
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066054790
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Serw
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R31
Waterbody Category and Map Code.: 
GB110066054800
Waterbody ID and Name: 
SH 85709 50646
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066060040
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Conwy - Merddwr to Caletwr 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R32
Waterbody Category and Map Code.: 
GB110066054810
Waterbody ID and Name: 
SH 78324 48808
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066060040
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2o, B2p, 
C2a) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Machno
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
GB110066054820
Waterbody ID and Name: 
SH 89031 51006
National Grid Reference: 
Moderate Good by 2015
Good Ecological Status by 2015 No Not Designated A/HMWB GB110066054800
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Merddwr (Conwy)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R34
Waterbody Category and Map Code.: 
GB110066054830
Waterbody ID and Name: 
SH 71207 57638
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066054850
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2d, B2o)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant gwryd
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R35
Waterbody Category and Map Code.: 
GB110066054840
Waterbody ID and Name: 
SH 83223 55326
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066060040
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Iwrch
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R36
Waterbody Category and Map Code.: 
GB110066059690
Waterbody ID and Name: 
SH 74566 66548
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Not In Place Not In Place
River - R37
Waterbody Category and Map Code.: 
GB110066059710
Waterbody ID and Name: 
SH 90032 68256
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066060020
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Melai
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R38
Waterbody Category and Map Code.: 
GB110066059740
Waterbody ID and Name: 
SH 75429 68219
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 No Not Designated A/HMWB GB541006614800
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB110066059750
SJ 02100 69126 Good Good by 2015
Good Ecological Status by 2015 Not Designated A/HMWB GB110066060020
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R40
Waterbody Category and Map Code.: 
GB110066054870
Waterbody ID and Name: 
SH 68510 60236
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Storage - 
non-specific 
GB110066054850
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Surveillance site:  No
Llugwy - Nant gwryd to Ffynon Llugwy 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R41
Waterbody Category and Map Code.: 
GB110066054880
Waterbody ID and Name: 
SH 76598 62495
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Crafnant
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R42
Waterbody Category and Map Code.: 
GB110066054890
Waterbody ID and Name: 
SH 76486 65519
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Ddu
Not In Place Not In Place
River - R43
Waterbody Category and Map Code.: 
GB110066054900
Waterbody ID and Name: 
SH 87624 65945
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059760
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Disproportionately expensive (M5a), Technically infeasible 
(B2a, S3b) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gallen
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R44
Waterbody Category and Map Code.: 
GB110066054910
Waterbody ID and Name: 
SH 87649 61228
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Freshwater Fish Directive No Not Designated A/HMWB GB110066059760
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R45
Waterbody Category and Map Code.: 
GB110066054920
Waterbody ID and Name: 
SH 96090 65683
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059770
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Deunant
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R46
Waterbody Category and Map Code.: 
GB110066054930
Waterbody ID and Name: 
SH 93236 62675
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer), Water Storage - non-specific 
GB110066059770
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Uncertain)
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Aled - above Deunant 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R47
Waterbody Category and Map Code.: 
GB110066054940
Waterbody ID and Name: 
SH 69211 50984
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066060040
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a, B2o)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Lledr
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R48
Waterbody Category and Map Code.: 
GB110066054950
Waterbody ID and Name: 
SJ 02574 64461
National Grid Reference: 
Moderate Good by 2015
Good Ecological Status by 2015 No Not Designated A/HMWB GB110066059960
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Moderate (Quite Certain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Ystrad
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R49
Waterbody Category and Map Code.: 
GB110066054850
Waterbody ID and Name: 
SH 76802 57715
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Storage - 
non-specific 
GB110066060040
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Not Required (MS) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C3a)
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llugwy - Conwy to Nant gwryd 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R50
Waterbody Category and Map Code.: 
GB110066059910
Waterbody ID and Name: 
SJ 07419 67457
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB110066059960
Downstream Waterbody ID:
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Clwyd - un-named tributary below Ystrad
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R51
Waterbody Category and Map Code.: 
GB110066054790
Waterbody ID and Name: 
SH 83633 47655
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066054780
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Conwy - Caletwr to Serw 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R52
Waterbody Category and Map Code.: 
GB110066059850
Waterbody ID and Name: 
SH 77558 77821
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named Conwy estuary west 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R53
Waterbody Category and Map Code.: 
GB110066054770
Waterbody ID and Name: 
SH 78815 44355
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110066054790
Downstream Waterbody ID:
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Conwy - Serw to Llyn Conwy 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R54
Waterbody Category and Map Code.: 
GB110066059960
Waterbody ID and Name: 
SJ 08261 68554
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB541006608000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Not Required (MS) 
Invertebrates 
Good 
Good
Macrophytes 
Good 
Good
Phytobenthos 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(P1a), Technically infeasible (S3b) 
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
 
Surveillance site:  Yes
Clwyd - tidal limit to Hesbin 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Quite Certain)
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Atrazine 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
Moderate (Quite Certain)
Moderate
Technically infeasible (C2a)
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Tributyltin Compounds 
Moderate (Quite Certain)
Moderate
Technically infeasible (C2a)
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
Trichloroethylene 
High 
High
River - R55
Waterbody Category and Map Code.: 
GB110066059840
Waterbody ID and Name: 
SH 77214 75870
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541006614800
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gyffin
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R56
Waterbody Category and Map Code.: 
GB110066054720
Waterbody ID and Name: 
SJ 13191 59430
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059960
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2e, B2r, 
S3b) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Dwr Ial
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R57
Waterbody Category and Map Code.: 
GB110066054860
Waterbody ID and Name: 
SH 80896 60903
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066060040
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant y Goron
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R58
Waterbody Category and Map Code.: 
GB110066059700
Waterbody ID and Name: 
SH 86791 67575
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059760
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Elwy - un-named tributary below Afon Gallen
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R59
Waterbody Category and Map Code.: 
GB110066059860
Waterbody ID and Name: 
SH 90995 77335
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641011650000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulas - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R60
Waterbody Category and Map Code.: 
GB110066059950
Waterbody ID and Name: 
SJ 06523 72887
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059960
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (S3b)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Bach
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R61
Waterbody Category and Map Code.: 
GB110066054670
Waterbody ID and Name: 
SJ 06577 49858
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066059960
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Phytobenthos 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(B1a) 
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Clwyd - upstream Hesbin 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R62
Waterbody Category and Map Code.: 
GB110066054680
Waterbody ID and Name: 
SJ 08242 55340
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110066054740
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Melin-Dwr
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R63
Waterbody Category and Map Code.: 
GB110066054780
Waterbody ID and Name: 
SH 85732 49289
National Grid Reference: 
High
Current Overall Status 
High by 2015
Status Objective (Overall):
High Ecological Status by 2015
Status Objective(s): 
not good status by 2015: 
Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB110066054800
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
High
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Caletwr (Conwy)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L1
Waterbody Category and Map Code.: 
GB31033261
Waterbody ID and Name: 
SH 97335 70400
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Drinking Water
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Plas Uchaf and Dolwen Reservoirs 
GB31033537
Waterbody ID and Name: 
SH 70025 66557
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No Heavily Modified
Water Storage - non-specific

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Not In Place Not In Place
Lake - L3
Waterbody Category and Map Code.: 
GB31033571
Waterbody ID and Name: 
SH 72022 64986
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Total Phosphorus 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Llyn Eigiau Reservoir
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Not In Place
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L4
Waterbody Category and Map Code.: 
GB31033578
Waterbody ID and Name: 
SH 70130 65673
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Melynllyn
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Not In Place
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L5
Waterbody Category and Map Code.: 
GB31033686
Waterbody ID and Name: 
SH 72916 62559
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Total Phosphorus 
Good 
Good
Copper 
Moderate (Uncertain)
High
Zinc 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Llyn Cowlyd Reservoir 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Not In Place
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L6
Waterbody Category and Map Code.: 
GB31033699
Waterbody ID and Name: 
SH 69223 62737
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ffynnon Llugwy Reservoir 
GB31033974
Waterbody ID and Name: 
SH 64928 56273
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
littoral Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Macrophytes 
Good 
Good
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Good 
Good
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB31034008
Waterbody ID and Name: 
SH 78285 55207
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area No Heavily Modified
Water Storage - non-specific

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Not In Place Not In Place
Lake - L9
Waterbody Category and Map Code.: 
GB31034400
Waterbody ID and Name: 
SH 78037 46157
National Grid Reference: 
Poor
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Poor
Biological elements Element 
Current status (and certainty of less than 
good) 
littoral Invertebrates 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Macrophytes 
Good 
Good
Phytobenthos 
High 
High
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Moderate (Uncertain)
Moderate
Technically infeasible (ANC2b)
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Conwy
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

B.6  North West Wales river catchment 
 
Rivers and lakes 
 
There are 202 river water bodies (of which 26 are designated as heavily modified) and 33 lake water bodies (of which 20 are designated as heavily modified) within the North West Wales river catchment. 

 

Water body category 
Good or high now 
Good or high in 2015 
Good or high in 2021 
Good or high in 2027 
Less than good in 2015 
Total number of water bodies 
Natural 
Rivers 
48 
57 
57 
176 
119 
176 
Lakes 
2 
2 
2 
13 
11 
13 
Artificial/Heavily modified water bodies 
HMWB 
10 
11 
11 
46 
35 
46 
AWB 
0 
0 
0 
0 
0 
0 

 
 
Water body tables for rivers and lakes in the North West Wales catchment  
 
This section contains detailed information on the current status and objectives for river and lake water bodies in the catchment. The tables are arranged by water body type (in the order rivers then lakes) and by map code number within these groupings. Note: In the following water body tables, only the relevant elements of the status objectives (shown under the orange sub headings) are shown. 

River - R1
Waterbody Category and Map Code.: 
GB110065053490
Waterbody ID and Name: 
SH 36945 34618
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006509600
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Rhyd-Hir  - lower
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R2
Waterbody Category and Map Code.: 
GB110065053500
Waterbody ID and Name: 
SH 59055 33983
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dwyryd estuary south
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R3
Waterbody Category and Map Code.: 
GB110065053510
Waterbody ID and Name: 
SH 60822 36117
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB GB511006507300
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dwyryd estuary south
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R4
Waterbody Category and Map Code.: 
GB110065053520
Waterbody ID and Name: 
SH 64395 37921
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Poor (Very Certain)
Poor
Technically infeasible (DO2a)
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Does not Support 
Good 
Disproportionately expensive 
(HR2a) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Eisingrug
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R5
Waterbody Category and Map Code.: 
GB110065053530
Waterbody ID and Name: 
SH 48575 38452
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary Tremadog Bay 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R6
Waterbody Category and Map Code.: 
GB110065053540
Waterbody ID and Name: 
SH 50567 38271
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary Tremadog Bay 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R7
Waterbody Category and Map Code.: 
GB110065053550
Waterbody ID and Name: 
SH 61144 38455
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Appropriate vegetation control technique 
In Place
Selective vegetation control regime 
In Place
Phased de-watering and other techniques 
In Place
Appropriate channel maintenance strategies and techniques - minimise disturbance to channel 
bed and margins 
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Flow manipulation 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary Dwyryd estuary 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R8
Waterbody Category and Map Code.: 
GB110102054560
Waterbody ID and Name: 
SH 43215 64680
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521010201000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Braint/Cadnant/Lleiniog catchment
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R9
Waterbody Category and Map Code.: 
GB110065058490
Waterbody ID and Name: 
SH 55024 69220
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Menai Strait south 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R10
Waterbody Category and Map Code.: 
GB110065058500
Waterbody ID and Name: 
SH 65714 64758
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065058520
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a, B2d, 
B2e) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Caseg
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R11
Waterbody Category and Map Code.: 
GB110065058510
Waterbody ID and Name: 
SH 63595 71810
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Menai Strait south 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R12
Waterbody Category and Map Code.: 
GB110065058520
Waterbody ID and Name: 
SH 60141 70586
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006501300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Poor (Quite Certain)
Moderate
Technically infeasible (B2a, B2d)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Ogwen - lower
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R13
Waterbody Category and Map Code.: 
GB110065058530
Waterbody ID and Name: 
SH 61557 72304
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006501300
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Menai Strait south 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R14
Waterbody Category and Map Code.: 
GB110065058540
Waterbody ID and Name: 
SH 58570 68407
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Cegin
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R15
Waterbody Category and Map Code.: 
GB110065058550
Waterbody ID and Name: 
SH 68405 71206
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Aber
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R16
Waterbody Category and Map Code.: 
GB110065058560
Waterbody ID and Name: 
SH 67118 73627
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Menai Strait south 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R17
Waterbody Category and Map Code.: 
GB110065058570
Waterbody ID and Name: 
SH 68567 74289
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ddu
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R18
Waterbody Category and Map Code.: 
GB110065058590
Waterbody ID and Name: 
SH 74401 76138
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB671010400000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gyrach
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R19
Waterbody Category and Map Code.: 
GB110102058650
Waterbody ID and Name: 
SH 34110 69551
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621010380000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Crigyll/Caradog catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R20
Waterbody Category and Map Code.: 
GB110102058660
Waterbody ID and Name: 
SH 47945 67913
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521010201000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Braint - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R21
Waterbody Category and Map Code.: 
GB110102058670
Waterbody ID and Name: 
SH 45436 72367
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Freshwater Fish Directive, Nitrates Directive, 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB521010207500
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
Good 
Good
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
Surveillance site:  No
Cefni - tidal limit to Ceint 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Retain marginal aquatic and riparian habitats (channel alteration)
In Place
Appropriate timing (vegetation control) 
In Place
Appropriate vegetation control technique 
In Place
Selective vegetation control regime 
In Place
Flood bunds (earth banks, in place of floodwalls)
In Place
Set-back embankments 
Not In Place
Increase in-channel morphological diversity 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Hexachlorobenzene 
High 
High
Hexachlorobutadiene 
High 
High
Hexachlorocyclohexane 
High 
High
Pentachlorophenol 
High 
High
Trichlorobenzenes 
High 
High
Trichloromethane 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
Carbon Tetrachloride 
High 
High
para - para DDT 
High 
High
Tetrachloroethylene 
High 
High
Trichloroethylene 
High 
High
River - R22
Waterbody Category and Map Code.: 
GB110102058680
Waterbody ID and Name: 
SH 39781 72490
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive), Nitrates Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521010207400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ffraw
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R23
Waterbody Category and Map Code.: 
GB110102058690
Waterbody ID and Name: 
SH 52906 76599
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Braint - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R24
Waterbody Category and Map Code.: 
GB110102058770
Waterbody ID and Name: 
SH 45093 76457
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive, Nitrates Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110102058670
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Cefni - Ceint to Cefni reservoir 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R25
Waterbody Category and Map Code.: 
GB110102058780
Waterbody ID and Name: 
SH 45914 79488
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110102058770
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cefni - Cefni reservoir east 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R26
Waterbody Category and Map Code.: 
GB110102058790
Waterbody ID and Name: 
SH 42920 78515
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Nitrates Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110102058770
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cefni - Cefni reservoir west 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R27
Waterbody Category and Map Code.: 
GB110065048040
Waterbody ID and Name: 
SH 16926 29912
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Eiddon
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R28
Waterbody Category and Map Code.: 
GB110065048060
Waterbody ID and Name: 
SH 17425 28336
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Daron
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R29
Waterbody Category and Map Code.: 
GB110064048210
Waterbody ID and Name: 
SH 63866 26286
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110064048220
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Nantcol
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R30
Waterbody Category and Map Code.: 
GB110064048230
Waterbody ID and Name: 
SN 81260 95355
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048260
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulas South - upper
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R31
Waterbody Category and Map Code.: 
GB110064048240
Waterbody ID and Name: 
SN 60491 96894
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named trib south of Afon Dyffryn-Gwyn
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R32
Waterbody Category and Map Code.: 
GB110064048250
Waterbody ID and Name: 
SN 74108 97431
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Llyfnant
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R33
Waterbody Category and Map Code.: 
GB110064048260
Waterbody ID and Name: 
SN 77969 98888
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048290
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a, B2o)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulas South - middle
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R34
Waterbody Category and Map Code.: 
GB110064048280
Waterbody ID and Name: 
SN 80454 98832
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048290
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(B1a) 
Invertebrates 
Good 
Good
Macrophytes 
Good 
Good
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Crewi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R35
Waterbody Category and Map Code.: 
GB110064048290
Waterbody ID and Name: 
SH 76021 01381
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048390
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulas South - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R36
Waterbody Category and Map Code.: 
GB110064048320
Waterbody ID and Name: 
SN 88014 97700
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048370
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2c, B2o, 
C3a) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Twymyn - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R37
Waterbody Category and Map Code.: 
GB110064048340
Waterbody ID and Name: 
SH 82321 00721
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048390
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(B1a) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Nant Gwydol
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R38
Waterbody Category and Map Code.: 
GB110064048350
Waterbody ID and Name: 
SN 91128 99022
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Freshwater Fish Directive No Not Designated A/HMWB GB110064048330
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R39
Waterbody Category and Map Code.: 
GB110064048360
Waterbody ID and Name: 
SH 71302 01923
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a, B2o)
Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a, B2o)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Pennal
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R40
Waterbody Category and Map Code.: 
GB110064048370
Waterbody ID and Name: 
SH 85061 02955
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048390
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Twymyn - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R41
GB110064048380
Waterbody ID and Name: 
SH 90335 03702
National Grid Reference: 
Moderate Good by 2015
Good Ecological Status by 2015 No Not Designated A/HMWB GB110064048330
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R42
Waterbody Category and Map Code.: 
GB110064048390
Waterbody ID and Name: 
SH 74150 01838
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Macrophytes 
High 
High
Phytobenthos 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C3a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Dyfi - tidal limit to Afon Twymyn 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Tributyltin Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R43
Waterbody Category and Map Code.: 
GB110064048400
Waterbody ID and Name: 
SH 56312 03414
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006414900
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary near Afon Dysynni 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R44
Waterbody Category and Map Code.: 
GB110065047970
Waterbody ID and Name: 
SH 16118 25578
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named near Soch catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R45
Waterbody Category and Map Code.: 
GB110065047980
Waterbody ID and Name: 
SH 29551 26111
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named near Soch catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R46
Waterbody Category and Map Code.: 
GB110065047990
Waterbody ID and Name: 
SH 31056 27305
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named near Soch catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R47
Waterbody Category and Map Code.: 
GB110065048000
Waterbody ID and Name: 
SH 16376 26995
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Saint
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R48
Waterbody Category and Map Code.: 
GB110065048020
Waterbody ID and Name: 
SH 20675 27056
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named Cardigan Bay South 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R49
Waterbody Category and Map Code.: 
GB110064039310
Waterbody ID and Name: 
SN 60656 99278
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dyffryn-Gwyn
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R50
Waterbody Category and Map Code.: 
GB110064048410
Waterbody ID and Name: 
SH 64563 04626
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006414900
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Does not Support 
Good 
Disproportionately expensive 
(HR2a) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Fathew
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R51
Waterbody Category and Map Code.: 
GB110064048460
Waterbody ID and Name: 
SH 60652 10900
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary near Afon Dysynni 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R52
Waterbody Category and Map Code.: 
GB110064048470
Waterbody ID and Name: 
SH 61124 08763
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Does not Support 
Good 
Disproportionately expensive 
(HR2a) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gwril
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R53
Waterbody Category and Map Code.: 
GB110064054600
Waterbody ID and Name: 
SH 61498 28580
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048220
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Artro - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R54
Waterbody Category and Map Code.: 
GB110064054610
Waterbody ID and Name: 
SH 70121 28984
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048750
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Crawcwellt North
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R55
Waterbody Category and Map Code.: 
GB110064054640
Waterbody ID and Name: 
SH 73029 30023
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110064048730
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Not Required (MS) 
Invertebrates 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(PH1a) 
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(C1a) 
Zinc 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(C1a) 
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  No
Gain
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R56
Waterbody Category and Map Code.: 
GB110064048480
Waterbody ID and Name: 
SH 89331 11434
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048580
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Tafalog
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R57
Waterbody Category and Map Code.: 
GB110064048500
Waterbody ID and Name: 
SH 61619 12874
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary near Afon Dysynni 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R58
Waterbody Category and Map Code.: 
GB110064048510
Waterbody ID and Name: 
SH 84330 07042
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048390
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dyfi - Afon Twymyn to Afon Dugoed 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R59
Waterbody Category and Map Code.: 
GB110064048520
Waterbody ID and Name: 
SH 66809 09115
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048530
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a, C2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Cadair
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R60
Waterbody Category and Map Code.: 
GB110064048530
Waterbody ID and Name: 
SH 69422 08105
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048440
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2o)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dysynni - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R61
Waterbody Category and Map Code.: 
GB110064048540
Waterbody ID and Name: 
SH 62752 13663
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mawddach estuary south 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R62
Waterbody Category and Map Code.: 
GB110064048550
Waterbody ID and Name: 
SH 82343 11100
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048510
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Moderate
Technically infeasible (B2o, B2p)
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Angell
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R63
Waterbody Category and Map Code.: 
GB110064048560
Waterbody ID and Name: 
SH 85993 13646
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048510
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dyfi -  Dugoed to Cerist 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R64
Waterbody Category and Map Code.: 
GB110064048570
Waterbody ID and Name: 
SH 76399 08640
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB110064048390
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Not Required (MS) 
Invertebrates 
Moderate (Quite Certain)
Moderate
Not Required (MS) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a) 
Surveillance site:  Yes
Dulas North
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Appropriate techniques (invasive species) 
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R65
Waterbody Category and Map Code.: 
GB110064048580
Waterbody ID and Name: 
SH 87411 13053
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048510
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Dugoed - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R66
Waterbody Category and Map Code.: 
GB110064048590
Waterbody ID and Name: 
SH 86483 15339
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048560
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Macrophytes 
Good 
Good
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Dyfi -  Cerist to Cywarch 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R67
Waterbody Category and Map Code.: 
GB110064048600
Waterbody ID and Name: 
SH 91719 13104
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048580
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dugoed - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R68
Waterbody Category and Map Code.: 
GB110064048650
Waterbody ID and Name: 
SH 65611 15987
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mawddach estuary south 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R69
Waterbody Category and Map Code.: 
GB110064048660
Waterbody ID and Name: 
SH 68638 15640
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mawddach estuary south 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R70
Waterbody Category and Map Code.: 
GB110064048670
Waterbody ID and Name: 
SH 61013 17591
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mawddach estuary north 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R71
Waterbody Category and Map Code.: 
GB110102058800
Waterbody ID and Name: 
SH 33929 70874
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621010380000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Crigyll/Caradog catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R72
Waterbody Category and Map Code.: 
GB110102058810
Waterbody ID and Name: 
SH 60603 77828
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Braint/Cadnant/Lleiniog catchment
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R73
Waterbody Category and Map Code.: 
GB110102058860
Waterbody ID and Name: 
SH 34035 72226
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621010380000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Crigyll/Caradog catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R74
Waterbody Category and Map Code.: 
GB110102058870
Waterbody ID and Name: 
SH 52252 78571
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nodwydd
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R75
Waterbody Category and Map Code.: 
GB110102058880
Waterbody ID and Name: 
SH 56126 79389
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Wern Y Wylan
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R76
Waterbody Category and Map Code.: 
GB110102058890
Waterbody ID and Name: 
SH 57656 80600
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named  - Braint/Cadnant/Lleiniog catchment
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R77
Waterbody Category and Map Code.: 
GB110102058930
Waterbody ID and Name: 
SH 30302 79184
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010450000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Crigyll/Caradog catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R78
Waterbody Category and Map Code.: 
GB110102058970
Waterbody ID and Name: 
SH 37174 78174
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB651010370000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (S2b)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Crigyll
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R79
Waterbody Category and Map Code.: 
GB110102058980
Waterbody ID and Name: 
SH 38523 86003
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Storage - 
non-specific 
GB521010207600
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  No
Alaw
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R80
Waterbody Category and Map Code.: 
GB110102058990
Waterbody ID and Name: 
SH 47573 89322
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R81
Waterbody Category and Map Code.: 
GB110102059000
Waterbody ID and Name: 
SH 46088 86786
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
High 
High
pH 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(PH1a) 
Phosphate 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1b) 
Temperature 
High 
High
Zinc 
Moderate (Quite Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Goch Dulas
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R82
Waterbody Category and Map Code.: 
GB110102059020
Waterbody ID and Name: 
SH 52237 80790
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Lligwy catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R83
Waterbody Category and Map Code.: 
GB110102059030
Waterbody ID and Name: 
SH 50882 82171
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Lligwy catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R84
Waterbody Category and Map Code.: 
GB110102059050
Waterbody ID and Name: 
SH 50234 85573
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Lligwy catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R85
Waterbody Category and Map Code.: 
GB110102059090
Waterbody ID and Name: 
SH 29265 84934
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010360000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R86
Waterbody Category and Map Code.: 
GB110065053570
Waterbody ID and Name: 
SH 40178 37931
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006509600
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Erch - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R87
Waterbody Category and Map Code.: 
GB110065053580
Waterbody ID and Name: 
SH 52427 38100
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary Tremadog Bay 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R88
Waterbody Category and Map Code.: 
GB110065053590
Waterbody ID and Name: 
SH 62821 40197
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
not good status by 2015: 
No Not Designated A/HMWB GB511006507300

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary Dwyryd 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R89
Waterbody Category and Map Code.: 
GB110065053600
Waterbody ID and Name: 
SH 67333 41427
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Drinking Water, Water Regulation (impoundment release) 
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macrophytes 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  Yes
Dwyryd - lower
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R90
Waterbody Category and Map Code.: 
GB110065053620
Waterbody ID and Name: 
SH 65394 41184
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary Dwyryd 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R91
Waterbody Category and Map Code.: 
GB110065053630
Waterbody ID and Name: 
SH 72994 41238
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110065053600
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(PH1a) 
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Cynfal
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R92
Waterbody Category and Map Code.: 
GB110102059110
Waterbody ID and Name: 
SH 31147 88998
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611010390000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R93
Waterbody Category and Map Code.: 
GB110102059130
Waterbody ID and Name: 
SH 48156 90469
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R94
Waterbody Category and Map Code.: 
GB110102059140
Waterbody ID and Name: 
SH 31684 92579
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB611010390000
Downstream Waterbody ID:

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R95
Waterbody Category and Map Code.: 
GB110102059150
Waterbody ID and Name: 
SH 33576 92385
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611010390000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R96
Waterbody Category and Map Code.: 
GB110102059160
Waterbody ID and Name: 
SH 34158 91504
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611010390000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R97
Waterbody Category and Map Code.: 
GB110102059170
Waterbody ID and Name: 
SH 38613 91731
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 No
SSSI (Non-N2K) related: 
Not Designated A/HMWB GB641010620000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Wygyr
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R98
Waterbody Category and Map Code.: 
GB110102059180
Waterbody ID and Name: 
SH 38007 93732
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R99
Waterbody Category and Map Code.: 
GB110102059200
Waterbody ID and Name: 
SH 30792 87638
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621010380000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R100
Waterbody Category and Map Code.: 
GB110102059210
Waterbody ID and Name: 
SH 47331 92583
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R101
Waterbody Category and Map Code.: 
GB110102059220
Waterbody ID and Name: 
SH 45955 92135
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Wygyr catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R102
Waterbody Category and Map Code.: 
GB110102059230
Waterbody ID and Name: 
SH 44551 93257
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Copper 
Moderate (Very Certain)
High
Iron 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Zinc 
Moderate (Very Certain)
High
Supporting conditions 
Element 
Current status (and 
certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Very Certain)
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Cadmium And Its 
Compounds 
Moderate (Very Certain)
Moderate
Technically infeasible (C3a)
Lead And Its Compounds 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Nickel And Its Compounds 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Surveillance site:  No
Goch Amlwch
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R103
Waterbody Category and Map Code.: 
GB110102059310
Waterbody ID and Name: 
SH 59849 76053
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Braint/Cadnant/Lleiniog catchment
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R104
Waterbody Category and Map Code.: 
GB110064048680
Waterbody ID and Name: 
SH 60762 19053
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mawddach estuary north 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R105
Waterbody Category and Map Code.: 
GB110064048690
Waterbody ID and Name: 
SH 59729 20270
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mawddach estuary north 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R106
Waterbody Category and Map Code.: 
GB110064048700
Waterbody ID and Name: 
SH 63518 17935
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407100
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dwynant
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R107
Waterbody Category and Map Code.: 
GB110064048710
Waterbody ID and Name: 
SH 73286 21879
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407100
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Mawddach - lower
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R108
Waterbody Category and Map Code.: 
GB110064048730
Waterbody ID and Name: 
SH 73595 25874
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048710
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2c, B2i, 
B2o, S3c) 
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mawddach - middle
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R109
Waterbody Category and Map Code.: 
GB110064048740
Waterbody ID and Name: 
SH 74555 24390
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048710
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2o, S2e)
Invertebrates 
Poor (Quite Certain)
Poor
Technically infeasible (B2o, S2e)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Wen  (Mawddach)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R110
Waterbody Category and Map Code.: 
GB110064048750
Waterbody ID and Name: 
SH 72383 25961
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048710
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a, B2o)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Eden - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R111
Waterbody Category and Map Code.: 
GB110064048760
Waterbody ID and Name: 
SN 63130 96674
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Dyfi estuary north 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R112
Waterbody Category and Map Code.: 
GB110064048770
Waterbody ID and Name: 
SN 64759 97144
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Dyfi estuary north 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB110064048790
Waterbody ID and Name: 
SH 76543 17285
National Grid Reference: 
Good Good by 2015
Good Ecological Status by 2015 Not Designated A/HMWB GB110064048800
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R114
Waterbody Category and Map Code.: 
GB110064048800
Waterbody ID and Name: 
SH 72946 17963
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB511006407100
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  No
Wnion - lower
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
GB110064048810
SH 67261 20853
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Copper 
Moderate (Uncertain)
High
Iron 
High 
High
Zinc 
High 
High
Supporting conditions 
Element 
Current status (and 
certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R116
Waterbody Category and Map Code.: 
GB110064048830
Waterbody ID and Name: 
SH 61371 22610
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Ysgethin
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R117
Waterbody Category and Map Code.: 
GB110065053660
Waterbody ID and Name: 
SH 48513 39759
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB511006511000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  No
Dwyfawr - lower
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R118
Waterbody Category and Map Code.: 
GB110065053690
Waterbody ID and Name: 
SH 54261 43147
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110065053660
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Cwmystradllyn
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R119
GB110065053710
SH 41991 43092
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Freshwater Fish Directive No Not Designated A/HMWB GB110065053570
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R120
Waterbody Category and Map Code.: 
GB110065053720
Waterbody ID and Name: 
SH 68265 45151
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Power Generation, Water Regulation (impoundment release) 
Reason for Designation: 
GB110065053610
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Goedol
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Lead And Its Compounds 
High 
High
Nickel And Its Compounds 
High 
High
River - R121
Waterbody Category and Map Code.: 
GB110065053730
Waterbody ID and Name: 
SH 48031 44106
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006511000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Dwyfach
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R122
Waterbody Category and Map Code.: 
GB110065053740
Waterbody ID and Name: 
SH 53133 46541
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065053660
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dwyfawr - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R123
Waterbody Category and Map Code.: 
GB110065053750
Waterbody ID and Name: 
SH 72494 35249
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Zinc 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Prysor
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
River - R124
Waterbody Category and Map Code.: 
GB110065053760
Waterbody ID and Name: 
SH 27359 29650
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Soch
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R125
Waterbody Category and Map Code.: 
GB110065053770
Waterbody ID and Name: 
SH 54871 37329
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Glaslyn estuary north 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R126
Waterbody Category and Map Code.: 
GB110065053780
Waterbody ID and Name: 
SH 56098 38112
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Glaslyn estuary north 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R127
Waterbody Category and Map Code.: 
GB110065053800
Waterbody ID and Name: 
SH 56047 39690
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Appropriate timing (vegetation control) 
In Place
Appropriate vegetation control technique 
In Place
Selective vegetation control regime 
In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Increase in-channel morphological diversity 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Glaslyn estuary north 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R128
Waterbody Category and Map Code.: 
GB110065053810
Waterbody ID and Name: 
SH 58163 40739
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Increase in-channel morphological diversity 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Glaslyn estuary north 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R129
Waterbody Category and Map Code.: 
GB110065053820
Waterbody ID and Name: 
SH 60115 41696
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Not Designated A/HMWB GB511006507300
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R130
Waterbody Category and Map Code.: 
GB110065053830
Waterbody ID and Name: 
SH 32791 42520
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Caernarfon Bay South 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R131
Waterbody Category and Map Code.: 
GB110065053860
Waterbody ID and Name: 
SH 58976 42227
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006507300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Macrophytes 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Glaslyn  - tidal to Afon Croesor 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R132
Waterbody Category and Map Code.: 
GB110065053870
Waterbody ID and Name: 
SH 35374 44811
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Gwrtheyrn
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R133
Waterbody Category and Map Code.: 
GB110065053880
Waterbody ID and Name: 
SH 38061 45896
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Caernarfon Bay South 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R134
Waterbody Category and Map Code.: 
GB110065053900
Waterbody ID and Name: 
SH 39329 47709
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Caernarfon Bay South 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R135
Waterbody Category and Map Code.: 
GB110065053920
Waterbody ID and Name: 
SH 40915 48397
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Hen
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB110065053930
SH 61385 45742 Good Good by 2015
Good Ecological Status by 2015 Not Designated A/HMWB GB110065053910
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R137
Waterbody Category and Map Code.: 
GB110065053940
Waterbody ID and Name: 
SH 43759 50564
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Desach
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R138
Waterbody Category and Map Code.: 
GB110065053970
Waterbody ID and Name: 
SH 48534 52757
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
 
Surveillance site:  No
Llyfni
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R139
Waterbody Category and Map Code.: 
GB110065053980
Waterbody ID and Name: 
SH 45072 54673
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Quite Certain)
Poor
Technically infeasible (B2a)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llifon
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R140
Waterbody Category and Map Code.: 
GB110065053990
Waterbody ID and Name: 
SH 46690 57412
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015 No Not Designated A/HMWB GB521006501200

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Carrog
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R141
Waterbody Category and Map Code.: 
GB110065054000
Waterbody ID and Name: 
SH 46629 60427
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006501200
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Foryd estuary east 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R142
Waterbody Category and Map Code.: 
GB110065054010
Waterbody ID and Name: 
SH 59986 58654
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB110065054040
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R143
Waterbody Category and Map Code.: 
GB110065054020
Waterbody ID and Name: 
SH 57487 62929
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110065054040
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Caledffrwd
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R144
Waterbody Category and Map Code.: 
GB110065054030
Waterbody ID and Name: 
SH 49306 63223
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006501100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cadnant
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R145
Waterbody Category and Map Code.: 
GB110065054050
Waterbody ID and Name: 
SH 50316 65595
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Menai Strait south 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R146
Waterbody Category and Map Code.: 
GB110065054060
Waterbody ID and Name: 
SH 52143 66602
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Menai Strait south 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R147
Waterbody Category and Map Code.: 
GB110065054080
Waterbody ID and Name: 
SH 20705 33467
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named near Soch catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R148
Waterbody Category and Map Code.: 
GB110065054090
Waterbody ID and Name: 
SH 20936 35419
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named near Soch catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R149
Waterbody Category and Map Code.: 
GB110065054100
Waterbody ID and Name: 
SH 23057 37008
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named near Soch catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R150
Waterbody Category and Map Code.: 
GB110065054120
Waterbody ID and Name: 
SH 33309 33176
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065054130
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Penrhos
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R151
Waterbody Category and Map Code.: 
GB110065054130
Waterbody ID and Name: 
SH 28009 39679
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No Not Designated A/HMWB GB651010610000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Geirch
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R152
Waterbody Category and Map Code.: 
GB110065054160
Waterbody ID and Name: 
SH 63333 63513
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015 No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065058520
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Very Certain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ogwen - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R153
Waterbody Category and Map Code.: 
GB110065054190
Waterbody ID and Name: 
SH 52853 58718
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive), Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB521006501200
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Surveillance site:  No
Gwyrfai
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R154
Waterbody Category and Map Code.: 
GB110064043570
Waterbody ID and Name: 
SN 63122 88090
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive), Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a, B2i)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Iron 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Leri - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R155
Waterbody Category and Map Code.: 
GB110064043590
Waterbody ID and Name: 
SN 67394 90145
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064043570
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Leri - un-named tributary 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R156
Waterbody Category and Map Code.: 
GB110064043600
Waterbody ID and Name: 
SN 68045 91779
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Clettwr
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R157
Waterbody Category and Map Code.: 
GB110064043610
Waterbody ID and Name: 
SN 69389 94425
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1o) 
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Einion
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R158
Waterbody Category and Map Code.: 
GB110064043620
Waterbody ID and Name: 
SN 78370 95641
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048260
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Quite Certain)
Moderate
Technically infeasible (B2o)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Hengwm
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R159
Waterbody Category and Map Code.: 
GB110064048780
Waterbody ID and Name: 
SN 65783 97703
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Dyfi estuary north 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R160
Waterbody Category and Map Code.: 
GB110065053840
Waterbody ID and Name: 
SH 60607 40808
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065053820
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gaseg - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R161
Waterbody Category and Map Code.: 
GB110065058580
Waterbody ID and Name: 
SH 72202 75694
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB671010400000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Conwy Bay 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R162
Waterbody Category and Map Code.: 
GB110064054630
Waterbody ID and Name: 
SH 69814 32862
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048750
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a, B2o)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Eden - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R163
Waterbody Category and Map Code.: 
GB110102059070
Waterbody ID and Name: 
SH 48281 85645
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Lligwy
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R164
Waterbody Category and Map Code.: 
GB110065053680
Waterbody ID and Name: 
SH 45057 41991
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(A1a) 
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(P1b) 
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Quite Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(A1a) 
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Wen (Lleyn Peninsula) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R165
Waterbody Category and Map Code.: 
GB110065054070
Waterbody ID and Name: 
SH 32388 30428
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named near Soch catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R166
Waterbody Category and Map Code.: 
GB110102059040
Waterbody ID and Name: 
SH 50935 82981
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Lligwy catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R167
Waterbody Category and Map Code.: 
GB110064048310
Waterbody ID and Name: 
SH 57817 02025
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB511006414900
Downstream Waterbody ID:

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Appropriate timing (vegetation control) 
In Place
Appropriate vegetation control technique 
In Place
Selective vegetation control regime 
In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Appropriate techniques (invasive species) 
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Increase in-channel morphological diversity 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named trib north of Afon Dyffyn-Gwyn
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R168
Waterbody Category and Map Code.: 
GB110064048440
Waterbody ID and Name: 
SH 63180 06639
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006414900
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Dysynni - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R169
Waterbody Category and Map Code.: 
GB110064048840
Waterbody ID and Name: 
SH 79193 20695
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048800
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Very Certain)
Moderate
Technically infeasible (S2c)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Wnion  - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R170
Waterbody Category and Map Code.: 
GB110065053950
Waterbody ID and Name: 
SH 57644 50945
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065053960
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH3b)
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Colwyn
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R171
Waterbody Category and Map Code.: 
GB110065054110
Waterbody ID and Name: 
SH 24789 37794
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named near Soch catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R172
Waterbody Category and Map Code.: 
GB110102058760
Waterbody ID and Name: 
SH 55970 74143
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010120000
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cadnant
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R173
Waterbody Category and Map Code.: 
GB110064043580
Waterbody ID and Name: 
SN 71116 87845
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110064043570
Downstream Waterbody ID:
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Leri - upper
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R174
Waterbody Category and Map Code.: 
GB110065053610
Waterbody ID and Name: 
SH 68633 41886
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065053600
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dwyryd - upper
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R175
Waterbody Category and Map Code.: 
GB110065053700
Waterbody ID and Name: 
SH 37199 41476
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
not good status by 2015: 
Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB110065053570
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Erch - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R176
Waterbody Category and Map Code.: 
GB110065053890
Waterbody ID and Name: 
SH 62543 44167
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110065053860
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
 
Surveillance site:  No
Croesor
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R177
Waterbody Category and Map Code.: 
GB110102059010
Waterbody ID and Name: 
SH 52350 79978
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641010620000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named - Lligwy catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R178
Waterbody Category and Map Code.: 
GB110064048330
Waterbody ID and Name: 
SH 89247 02510
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB110064048370
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Iaen  - lower
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R179
Waterbody Category and Map Code.: 
GB110064048450
Waterbody ID and Name: 
SH 91879 06497
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048380
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a, B2o, 
S2c) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Cwm
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R180
Waterbody Category and Map Code.: 
GB110064048610
Waterbody ID and Name: 
SH 82703 16414
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Freshwater Fish Directive No Not Designated A/HMWB GB110064048560
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Cerist
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R181
Waterbody Category and Map Code.: 
GB110064048720
Waterbody ID and Name: 
SH 68232 25192
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048710
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(PH1a) 
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Gamlan
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R182
Waterbody Category and Map Code.: 
GB110065053790
Waterbody ID and Name: 
SH 30959 40974
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651010610000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named to Caernarfon Bay South 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R183
Waterbody Category and Map Code.: 
GB110102058940
Waterbody ID and Name: 
SH 49183 75075
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110102058670
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Moderate (Very Certain)
Moderate
Technically infeasible (DO2a)
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Ceint
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R184
Waterbody Category and Map Code.: 
GB110064048620
Waterbody ID and Name: 
SH 85951 19497
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Freshwater Fish Directive No Not Designated A/HMWB GB110064048590
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Cywarch
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R185
Waterbody Category and Map Code.: 
GB110065053670
Waterbody ID and Name: 
SH 71553 43191
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110065053610
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  No
Teigl
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Lead And Its Compounds 
High 
High
Nickel And Its Compounds 
High 
High
River - R186
Waterbody Category and Map Code.: 
GB110065054040
Waterbody ID and Name: 
SH 52745 64044
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Shellfish Water 
Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB521006501100
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d) 
Surveillance site:  No
Seiont - lower
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R187
Waterbody Category and Map Code.: 
GB110102054570
Waterbody ID and Name: 
SH 45343 65632
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521010201000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Rhyd Y Valley
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R188
Waterbody Category and Map Code.: 
GB110064048220
Waterbody ID and Name: 
SH 58844 26735
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006407200
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Artro
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R189
Waterbody Category and Map Code.: 
GB110064048420
Waterbody ID and Name: 
SH 89456 05463
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048380
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Carfan
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R190
Waterbody Category and Map Code.: 
GB110064048630
Waterbody ID and Name: 
SH 90832 19555
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048590
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dyfi  - above Afon Cywarch 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R191
Waterbody Category and Map Code.: 
GB110065053650
Waterbody ID and Name: 
SH 35363 38734
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065053490
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Rhyd-Hir
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R192
Waterbody Category and Map Code.: 
GB110065054170
Waterbody ID and Name: 
SH 30575 29210
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named near Soch catchment 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R193
Waterbody Category and Map Code.: 
GB110064054620
Waterbody ID and Name: 
SH 80220 28712
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048730
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive (PH1a), Technically infeasible 
(S2c) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(PH1a) 
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Mawddach - upper
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R194
Waterbody Category and Map Code.: 
GB110102058900
Waterbody ID and Name: 
SH 60214 78609
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB GB681010120000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Lleiniog
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R195
Waterbody Category and Map Code.: 
GB110064048200
Waterbody ID and Name: 
SH 57587 25516
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006407200
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Un-named tributary near Afon Artro 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R196
Waterbody Category and Map Code.: 
GB110064048640
Waterbody ID and Name: 
SH 64907 13864
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006407100
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Arthog
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R197
Waterbody Category and Map Code.: 
GB110102059100
Waterbody ID and Name: 
SH 33615 84948
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521010207600
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Tan R'Allt
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R198
Waterbody Category and Map Code.: 
GB110064048820
Waterbody ID and Name: 
SH 68830 19618
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB511006407100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cwm-Mynach
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R199
Waterbody Category and Map Code.: 
GB110065053850
Waterbody ID and Name: 
SH 59455 43551
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065053860
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Glaslyn - Croesor to Nanmor 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R200
Waterbody Category and Map Code.: 
GB110065053910
Waterbody ID and Name: 
SH 59504 44967
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110065053850
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Invertebrates 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a, B2i)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Glaslyn - Nanmor to Colwyn 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R201
Waterbody Category and Map Code.: 
GB110065053960
Waterbody ID and Name: 
SH 61663 49523
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
GB110065053910
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Glaslyn - upstream Colwyn 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R202
Waterbody Category and Map Code.: 
GB110064048430
Waterbody ID and Name: 
SH 81399 06005
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110064048390
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ceirig
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L1
Waterbody Category and Map Code.: 
GB31032435
Waterbody ID and Name: 
SH 34688 89887
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Good 
Good
Macrophytes 
High 
High
Phytobenthos 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(P1o) 
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
Total Phosphorus 
Poor (Very Certain)
Poor
Disproportionately expensive 
(P1o) 
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Llyn Llygeirian
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L2
Waterbody Category and Map Code.: 
GB31033828
Waterbody ID and Name: 
SH 59132 59388
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Other
Reason for Designation: 
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Peris
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L3
Waterbody Category and Map Code.: 
GB31033722
Waterbody ID and Name: 
SH 60770 62477
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Drinking Water
Reason for Designation: 
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Marchlyn Bach Reservoir 
Lake - L4
Waterbody Category and Map Code.: 
GB31035111
Waterbody ID and Name: 
SH 73399 32836
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Drinking Water
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Gelli Gain
Lake - L5
Waterbody Category and Map Code.: 
GB31032538
Waterbody ID and Name: 
SH 38979 86545
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Good 
Good
littoral Invertebrates 
High 
High
Macrophytes 
High 
High
Phytobenthos 
Good 
Good
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1o) 
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Llyn Alaw
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Not In Place
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L6
Waterbody Category and Map Code.: 
GB31032926
Waterbody ID and Name: 
SH 44455 77594
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
GB31032948
SH 31080 77622 Moderate Good by 2027
Good Ecological Status by 2027
Disproportionately expensive, Technically infeasible 
No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Macrophytes 
Good 
Good
Phytobenthos 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1a) 
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
Poor (Very Certain)
Poor
Disproportionately expensive 
(P1a) 
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L8
Waterbody Category and Map Code.: 
GB31033337
Waterbody ID and Name: 
SH 37924 70054
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Nitrates Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Macrophytes 
Good 
Good
Phytobenthos 
Moderate (Very Certain)
Moderate
Technically infeasible (P2b)
Phytoplankton 
Moderate (Quite Certain)
Moderate
Technically infeasible (P2b)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
Poor (Very Certain)
Poor
Technically infeasible (P2b)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L9
Waterbody Category and Map Code.: 
GB31033730
Waterbody ID and Name: 
SH 57383 61318
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Good 
Good
littoral Invertebrates 
High 
High
Macrophytes 
Moderate (Quite Certain)
Moderate
Not Required (MS) 
Phytobenthos 
Good 
Good
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
Total Phosphorus 
Good 
Good
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  Yes
Llyn Padarn
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Not In Place
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Management of the risk of fish entrainment in intakes for hydropower turbines or water resource 
purposes (or pumping stations) where there is downstream fish migration. 
Not In Place
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L10
Waterbody Category and Map Code.: 
GB31033737
Waterbody ID and Name: 
SH 61641 61967
National Grid Reference: 
Poor
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Phytoplankton 
Poor (Very Certain)
Poor
Disproportionately expensive 
(HL1a, P1a) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Marchlyn Mawr Reservoir 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Not In Place Not In Place
Waterbody Category and Map Code.: 
GB31033803
Waterbody ID and Name: 
SH 65961 60455
National Grid Reference: 
Good Good by 2015
Good Ecological Status by 2015 Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
littoral Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
GB31033836
SH 64506 59623 Good Good by 2015
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
littoral Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
High 
High
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L13
Waterbody Category and Map Code.: 
GB31034002
Waterbody ID and Name: 
SH 56025 54907
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
littoral Invertebrates 
High 
High
Macrophytes 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Phytobenthos 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
Good 
Good
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Where structures or other mechanisms are in place to enable fish to access waters upstream of the impounding works, the volume and timing of flow releases is sufficient to enable and, where 
relevant, trigger fish migration. 
Surveillance site:  Yes
Llyn Cwellyn
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Not In Place

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L14
Waterbody Category and Map Code.: 
GB31034033
Waterbody ID and Name: 
SH 63108 54433
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Good 
Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
 
Llyn Llydaw
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Not In Place Not In Place
Lake - L15
Waterbody Category and Map Code.: 
GB31034042
Waterbody ID and Name: 
SH 61681 54584
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Macrophytes 
Moderate (Very Certain)
Moderate
Technically infeasible (B2a, B2c)
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Good 
Good
Ammonia (Phys-Chem) 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Glaslyn
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L16
Waterbody Category and Map Code.: 
GB31034249
Waterbody ID and Name: 
SH 49199 49568
National Grid Reference: 
Poor
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Poor
Biological elements Element 
Current status (and certainty of less than 
good) 
littoral Invertebrates 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Management of the risk of fish entrainment in intakes for hydropower turbines or water resource 
purposes (or pumping stations) where there is downstream fish migration. 
Not In Place
Where structures or other mechanisms are in place to enable fish to access waters upstream of the impounding works, the volume and timing of flow releases is sufficient to enable and, where 
relevant, trigger fish migration. 
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Cwm Dulyn
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Not In Place Not In Place Not In Place
Waterbody Category and Map Code.: 
GB31034490
Waterbody ID and Name: 
SH 56174 44408
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Llyn Cwmystradllyn
Not In Place Not In Place
GB31034511
Waterbody ID and Name: 
SH 74805 44149
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
littoral Invertebrates 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Phytoplankton 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1a) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Moderate (Uncertain)
Moderate
Technically infeasible (ANC2b)
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1a) 
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L19
Waterbody Category and Map Code.: 
GB31034613
Waterbody ID and Name: 
SH 73763 42339
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Morwynion
Lake - L20
Waterbody Category and Map Code.: 
GB31034866
Waterbody ID and Name: 
SH 64027 38206
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Enable access to relevant feeder-streams draining into the reservoir at appropriate times for 
spawning and migration. 
In Place
Management of the risk of fish entrainment in intakes for hydropower turbines or water resource 
purposes (or pumping stations) where there is downstream fish migration. 
In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Tecwyn Uchaf
Lake - L21
Waterbody Category and Map Code.: 
GB31034870
Waterbody ID and Name: 
SH 69095 36743
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Moderate (Very Certain)
Moderate
Technically infeasible (B2a)
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Total Phosphorus 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1b) 
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Llyn Trawsfynydd
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Not In Place
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L22
Waterbody Category and Map Code.: 
GB31034895
Waterbody ID and Name: 
SH 76238 37690
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
littoral Invertebrates 
Good 
Good
Macrophytes 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Poor (Uncertain)
Poor
Disproportionately expensive 
(DO1a) 
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L23
Waterbody Category and Map Code.: 
GB31035056
Waterbody ID and Name: 
SH 64578 33823
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Good Ecological Potential by 2015 Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Water Storage - non-specific
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Macrophytes 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Llyn Eiddew-mawr
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L24
Waterbody Category and Map Code.: 
GB31035180
Waterbody ID and Name: 
SH 64054 31267
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
littoral Invertebrates 
Moderate (Very Certain)
Moderate
Technically infeasible (B2a)
Macrophytes 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Good 
Good
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB31035426
SH 66377 26624
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Good Ecological Status by 2027 Technically infeasible No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
littoral Invertebrates 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Macrophytes 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2o)
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Moderate (Uncertain)
Moderate
Technically infeasible (ANC2b)
Ammonia (Phys-Chem) 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L26
Waterbody Category and Map Code.: 
GB31035561
Waterbody ID and Name: 
SH 64852 23940
National Grid Reference: 
Poor
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Poor
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
littoral Invertebrates 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Macrophytes 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Phytobenthos 
High 
High
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Moderate (Uncertain)
Moderate
Technically infeasible (ANC2b)
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place Not In Place
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
GB31035712
Waterbody ID and Name: 
SH 73770 20761
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area No
SSSI (Non-N2K) related: 
Heavily Modified
Water Storage - non-specific

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Ensure the seasonal pattern of water levels during each year is managed so as to enable the establishment and retention of aquatic plant and animal communities in the shore zone of the 
impoundment. 
Ensure the rate and range of any artificial drawdown is appropriately managed to maintain aquatic plant and animal communities in the shore zones of water storage and supply with gently shelving 
shore zones. 
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Re-engineering of the river where the flow regime cannot be modified.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Not In Place Not In Place
Lake - L28
Waterbody Category and Map Code.: 
GB31047043
Waterbody ID and Name: 
SH 74499 09555
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Drinking Water
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Hafoty Reservoir
Lake - L29
Waterbody Category and Map Code.: 
GB31035578
Waterbody ID and Name: 
SH 67897 23837
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
littoral Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Moderate (Uncertain)
Moderate
Technically infeasible (ANC2b)
Total Phosphorus 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Cwm-mynach or Llyn Cwm Mynach
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L30
Waterbody Category and Map Code.: 
GB31034319
Waterbody ID and Name: 
SH 64912 48238
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
littoral Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Good 
Good
Total Phosphorus 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Llagi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Waterbody Category and Map Code.: 
GB31037690
Waterbody ID and Name: 
SN 72137 85829
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area No
SSSI (Non-N2K) related: 
Heavily Modified
Water Storage - non-specific

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Enable access to relevant feeder-streams draining into the reservoir at appropriate times for 
spawning and migration. 
Not In Place
Management of the risk of fish entrainment in intakes for hydropower turbines or water resource 
purposes (or pumping stations) where there is downstream fish migration. 
Not In Place
Where structures or other mechanisms are in place to enable fish to access waters upstream of the impounding works, the volume and timing of flow releases is sufficient to enable and, where 
relevant, trigger fish migration. 
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Not In Place
GB31036267
Waterbody ID and Name: 
SH 71510 12348
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
littoral Invertebrates 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Macrophytes 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2o)
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Moderate (Uncertain)
Moderate
Technically infeasible (ANC2b)
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L33
Waterbody Category and Map Code.: 
GB31036405
Waterbody ID and Name: 
SH 71694 09989
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Good 
Good
littoral Invertebrates 
High 
High
Macrophytes 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a, B2r)
Phytobenthos 
Good 
Good
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
Good 
Good
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment

B.7  South West Wales river catchment 
 
Rivers and lakes 
 
There are 206 river water bodies (of which 6 are designated as heavily modified) and 10 lake water bodies (of which 6 are designated as heavily modified) within the South West Wales river catchment. 

 

Good or high now 
Total number of water bodies 
Water body category 
Good or high in 2015 
Good or high in 2021 
Good or high in 2027 
Less than good in 2015 
Natural 
Rivers 
32 
43 
43 
200 
157 
200 
Lakes 
0 
0 
0 
4 
4 
4 
Artificial/Heavily modified water bodies 
HMWB 
4 
4 
4 
12 
8 
12 
AWB 
0 
0 
0 
0 
0 
0 

 
 
Water body tables for rivers and lakes in the South West Wales catchment  
 
This section contains detailed information on the current status and objectives for river and lake water bodies in the catchment. The tables are arranged by water body type (in the order rivers then lakes) and by map code number within these groupings. Note: In the following water body tables, only the relevant elements of the status objectives (shown under the orange sub headings) are shown. 

River - R1
Waterbody Category and Map Code.: 
GB110063041380
Waterbody ID and Name: 
SN 39371 58051
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Halen - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R2
Waterbody Category and Map Code.: 
GB110063041400
Waterbody ID and Name: 
SN 40575 59358
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gido - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R3
Waterbody Category and Map Code.: 
GB110063041410
Waterbody ID and Name: 
SN 47868 58932
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041450
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Mydyr - headwaters to confluence with Aeron
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R4
Waterbody Category and Map Code.: 
GB110063041440
Waterbody ID and Name: 
SN 44338 61396
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ceri Brook - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R5
Waterbody Category and Map Code.: 
GB110063041450
Waterbody ID and Name: 
SN 49215 60144
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006309500
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Aeron - confluence with Gwili to tidal limit
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R6
Waterbody Category and Map Code.: 
GB110063041460
Waterbody ID and Name: 
SN 52511 62906
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Quite Certain)
Moderate
Technically infeasible (C3a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Arth - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R7
Waterbody Category and Map Code.: 
GB110063041470
Waterbody ID and Name: 
SN 50570 65352
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL via Morfa Mawr Farm S of 
Llanon 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R8
Waterbody Category and Map Code.: 
GB110063041480
Waterbody ID and Name: 
SN 51219 66759
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cledan - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R9
Waterbody Category and Map Code.: 
GB110063041490
Waterbody ID and Name: 
SN 53900 67235
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Poor (Very Certain)
Good
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Ammonia (Annex 8) 
Poor (Very Certain)
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Peris - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R10
Waterbody Category and Map Code.: 
GB110063041500
Waterbody ID and Name: 
SN 59810 58165
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041450
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Macrophytes 
Good 
Good
Phytobenthos 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Aeron - headwaters to confluence with Gwili
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R11
Waterbody Category and Map Code.: 
GB110063041510
Waterbody ID and Name: 
SN 53384 69473
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Wyre - confluence with Wyre Fach to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R12
Waterbody Category and Map Code.: 
GB110063041520
Waterbody ID and Name: 
SN 55454 68514
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041510
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Wyre Fach - headwaters to confluence with Wyre
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R13
Waterbody Category and Map Code.: 
GB110063041530
Waterbody ID and Name: 
SN 61811 70902
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041510
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Wyre - headwaters to confluence with Wyre Fach
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R14
Waterbody Category and Map Code.: 
GB110063041550
Waterbody ID and Name: 
SN 55260 70951
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041510
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Carrog - headwaters to confluence with Wyre
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R15
Waterbody Category and Map Code.: 
GB110063041570
Waterbody ID and Name: 
SN 71042 78783
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Power Generation, Water Regulation (impoundment release), Water 
Storage - non-specific 
GB511006315000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macrophytes 
Good 
Good
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Surveillance site:  Yes
Rheidol - confluence with Castell to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Very Certain)
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
Trichloroethylene 
High 
High
River - R16
Waterbody Category and Map Code.: 
GB110063041580
Waterbody ID and Name: 
SN 75725 81444
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041570
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(PH1a) 
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Quite Certain) 
Does not Support 
Good 
Disproportionately expensive 
(HR4a) 
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Castell - headwaters to confluence with Rheidol
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R17
Waterbody Category and Map Code.: 
GB110063041590
Waterbody ID and Name: 
SN 65856 80018
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041570
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C3a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Melindwr - headwaters to confluence with Rheidol
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R18
Waterbody Category and Map Code.: 
GB110063041600
Waterbody ID and Name: 
SN 59816 83841
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Macrophytes 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Clarach - conf with Bow Street Brook to TL
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R19
Waterbody Category and Map Code.: 
GB110063041610
Waterbody ID and Name: 
SN 66992 84705
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041600
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2d)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Clarach - headwaters to conf with Bow Street Brook
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R20
Waterbody Category and Map Code.: 
GB110063041620
Waterbody ID and Name: 
SN 59206 85666
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - headwaters to Sarn Gynfelyn
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R21
Waterbody Category and Map Code.: 
GB110063041630
Waterbody ID and Name: 
SN 62166 84610
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041600
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C3a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Bow Street Brook - headwaters to conf with Clarach
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R22
Waterbody Category and Map Code.: 
GB110063041640
Waterbody ID and Name: 
SN 75106 84956
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Power Generation, Water Regulation (impoundment release), Water 
Storage - non-specific 
GB110063041570
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Hengwm - conf with Llechwedd-mawr to Rheidol 
conf 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R23
Waterbody Category and Map Code.: 
GB110063041650
Waterbody ID and Name: 
SN 75694 90132
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041640
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Llechwedd Mawr - HW to Nant y Moch reservoir
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R24
Waterbody Category and Map Code.: 
GB110063041660
Waterbody ID and Name: 
SN 80482 90591
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041640
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Moderate (Uncertain)
Moderate
Technically infeasible (PH2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Hengwm - headwaters to Nant y Moch reservoir
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R25
Waterbody Category and Map Code.: 
GB110063041670
Waterbody ID and Name: 
SN 73570 73250
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041710
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(PH1a) 
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cwmnewydion - headwaters to conf with Ystwyth
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R26
Waterbody Category and Map Code.: 
GB110063041680
Waterbody ID and Name: 
SN 68888 75872
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041710
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Quite Certain)
Poor
Technically infeasible (B2c, C3a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C3a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Magwr - headwaters to confluence with Ystwyth
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R27
Waterbody Category and Map Code.: 
GB110063041700
Waterbody ID and Name: 
SN 61469 78240
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041710
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Paith - headwaters to confluence with Ystwyth
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R28
Waterbody Category and Map Code.: 
GB110063041710
Waterbody ID and Name: 
SN 67833 71480
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006315000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (C3a)
Macrophytes 
Good 
Good
Phytobenthos 
Moderate (Uncertain)
Moderate
Technically infeasible (B2r)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Does not Support Good
Does not Support 
Good 
Technically infeasible (M1j)
Surveillance site:  Yes
Ystwyth - conf with Cwmnewydion to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Very Certain)
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Fluoranthene 
High 
High
Lead And Its Compounds 
Moderate (Very Certain)
Moderate
Technically infeasible (C3a)
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R29
Waterbody Category and Map Code.: 
GB110063041720
Waterbody ID and Name: 
SN 78423 73930
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041710
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Ystwyth - headwaters to conf with Cwmnewydion
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R30
Waterbody Category and Map Code.: 
GB110063036410
Waterbody ID and Name: 
SN 25878 50571
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Howni - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R31
Waterbody Category and Map Code.: 
GB110063036420
Waterbody ID and Name: 
SN 28099 51158
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Saith - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R32
Waterbody Category and Map Code.: 
GB110063036430
Waterbody ID and Name: 
SN 25395 51315
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gilwen - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R33
Waterbody Category and Map Code.: 
GB110063036440
Waterbody ID and Name: 
SN 19331 51332
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed  - headwaters to tidal limit, Mwnt beach
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R34
Waterbody Category and Map Code.: 
GB110063036460
Waterbody ID and Name: 
SN 29433 52268
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Hoffnant - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R35
Waterbody Category and Map Code.: 
GB110063036480
Waterbody ID and Name: 
SN 53392 56772
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041450
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gwili - headwaters to confluence with Aeron
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R36
Waterbody Category and Map Code.: 
GB110062039090
Waterbody ID and Name: 
SN 36771 42797
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive (P1a), Technically infeasible (B2l)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cynllo - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R37
Waterbody Category and Map Code.: 
GB110062039100
Waterbody ID and Name: 
SN 15884 46515
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006206900
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Teifi estuary, St Dogmaels 
N. 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R38
Waterbody Category and Map Code.: 
GB110062039110
Waterbody ID and Name: 
SN 31908 43632
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Ceri - headwaters to confluence with Teifi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R39
Waterbody Category and Map Code.: 
GB110062039120
Waterbody ID and Name: 
SN 14855 47927
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006206900
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Teifi Est., S.side near Poppit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R40
Waterbody Category and Map Code.: 
GB110062039130
Waterbody ID and Name: 
SN 26211 44103
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Hirwaun - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R41
Waterbody Category and Map Code.: 
GB110062039140
Waterbody ID and Name: 
SN 39689 45411
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cerdin - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R42
Waterbody Category and Map Code.: 
GB110062039150
Waterbody ID and Name: 
SN 49512 47054
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cledlyn - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R43
Waterbody Category and Map Code.: 
GB110062039170
Waterbody ID and Name: 
SN 22308 45878
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2l, B2r)
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2r)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Quite Certain)
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Surveillance site:  Yes
Arberth - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Supporting Conditions

Element 
Current status (and 
certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Atrazine 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Chlorfenvinphos 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Simazine 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
Trichloroethylene 
High 
High
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R44
Waterbody Category and Map Code.: 
GB110062039180
Waterbody ID and Name: 
SN 31195 47861
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062039110
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulas - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R45
Waterbody Category and Map Code.: 
GB110062039190
Waterbody ID and Name: 
SN 34598 48517
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ceri - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R46
Waterbody Category and Map Code.: 
GB110062039200
Waterbody ID and Name: 
SN 62793 51155
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(DO1a) 
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Quite Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Clywedog - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R47
Waterbody Category and Map Code.: 
GB110062039210
Waterbody ID and Name: 
SN 56155 49925
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Creuddyn - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R48
Waterbody Category and Map Code.: 
GB110062039220
Waterbody ID and Name: 
SN 42214 48702
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Clettwr - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R49
Waterbody Category and Map Code.: 
GB110062039230
Waterbody ID and Name: 
SN 51519 50996
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(DO1a) 
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Grannell - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R50
Waterbody Category and Map Code.: 
GB110062043562
Waterbody ID and Name: 
SN 52095 44563
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(DO1a) 
pH 
High 
High
Phosphate 
High 
High
Temperature 
Good 
Good
Copper 
Moderate (Very Certain)
High
Cypermethrin 
Moderate (Uncertain)
High
Diazinon 
High 
High
Dimethoate 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Teifi - Camddwr conf to Nant Wern-macwydd conf
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Chlorfenvinphos 
High 
High
River - R51
Waterbody Category and Map Code.: 
GB110062043561
Waterbody ID and Name: 
SN 24317 42331
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006206900
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
Moderate (Quite Certain)
Moderate
Technically infeasible (C3a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Teifi - conf with Nant Wern-Macwydd to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R52
Waterbody Category and Map Code.: 
GB110062038950
Waterbody ID and Name: 
SN 44208 34731
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062039020
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Disproportionately expensive (B1a), Technically infeasible (B2l, 
B2r) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Tyweli - headwaters to confluence with Talog
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R53
Waterbody Category and Map Code.: 
GB110062038960
Waterbody ID and Name: 
SN 25603 35633
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062038990
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cneifa - headwaters to confluence with Cych
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R54
Waterbody Category and Map Code.: 
GB110062038970
Waterbody ID and Name: 
SN 29049 35828
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062038990
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cych - headwaters to confluence with Cneifa
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R55
Waterbody Category and Map Code.: 
GB110062038980
Waterbody ID and Name: 
SN 47031 38077
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062038950
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Talog - headwaters to confluence with Tyweli
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R56
Waterbody Category and Map Code.: 
GB110062039000
Waterbody ID and Name: 
SN 39651 35914
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Macrophytes 
High 
High
Phytobenthos 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1d) 
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Siedi - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R57
Waterbody Category and Map Code.: 
GB110062039010
Waterbody ID and Name: 
SN 22516 37750
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062039040
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2l, B2r, S2b)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulas - headwaters  to confluence with Cych
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R58
Waterbody Category and Map Code.: 
GB110062039020
Waterbody ID and Name: 
SN 43156 38600
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Disproportionately expensive (B1a), Technically infeasible (B2l, 
B2r) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Tyweli - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R59
Waterbody Category and Map Code.: 
GB110062039030
Waterbody ID and Name: 
SN 35757 37973
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Bargod - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R60
Waterbody Category and Map Code.: 
GB110062039040
Waterbody ID and Name: 
SN 25167 40163
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cych - headwaters to confluence with Teifi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R61
Waterbody Category and Map Code.: 
GB110062039050
Waterbody ID and Name: 
SN 21528 42787
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043561
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive (P1a), Technically infeasible (B2l)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Morgenau - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R62
Waterbody Category and Map Code.: 
GB110062039060
Waterbody ID and Name: 
SN 53444 43906
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2l, B2o)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Poor (Very Certain)
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Duar - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R63
Waterbody Category and Map Code.: 
GB110062039070
Waterbody ID and Name: 
SN 17340 43239
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006206900
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Piliau - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R64
Waterbody Category and Map Code.: 
GB110062039080
Waterbody ID and Name: 
SN 15992 45170
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006206900
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Teifi estuary, St Dogmaels 
S. 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R65
Waterbody Category and Map Code.: 
GB110061038290
Waterbody ID and Name: 
SN 11600 25270
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061030670
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Cypermethrin 
Moderate (Quite Certain)
High
Diazinon 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
E. Cleddau - conf with Wern to conf with Syfynwy
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Atrazine 
High 
High
Chlorfenvinphos 
High 
High
Simazine 
High 
High
River - R66
Waterbody Category and Map Code.: 
GB110061038300
Waterbody ID and Name: 
SN 04835 27114
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer) 
GB110061030700
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Not Required (MS) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
2,4-dichlorophenoxyacetic 
acid 
High 
High
Chlorine 
Moderate (Very Certain)
High
Copper 
High 
High
Cypermethrin 
Moderate (Uncertain)
High
Diazinon 
High 
High
Iron 
High 
High
Mecoprop 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
 
Surveillance site:  No
Syfynwy - headwaters to conf with Deepford Brook
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Atrazine 
High 
High
Chlorfenvinphos 
High 
High
Simazine 
High 
High
River - R67
Waterbody Category and Map Code.: 
GB110061073340
Waterbody ID and Name: 
SM 92459 06386
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Castle Pill - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R68
Waterbody Category and Map Code.: 
GB110061038670
Waterbody ID and Name: 
SM 90890 31922
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038650
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Phosphate 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
W. Cleddau - headwaters to conf with Cleddau 
North 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R69
Waterbody Category and Map Code.: 
GB110061038690
Waterbody ID and Name: 
SN 00573 28900
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031340
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Anghof - headwaters to conf with Western Cleddau
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R70
Waterbody Category and Map Code.: 
GB110061038700
Waterbody ID and Name: 
SM 92858 31105
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038650
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cleddau N. - Nant y Bugail conf to W. Cleddau conf
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R71
Waterbody Category and Map Code.: 
GB110061030750
Waterbody ID and Name: 
SN 21894 09327
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - headwaters to tidal limit, Nr Pendine W.
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R72
Waterbody Category and Map Code.: 
GB110061030760
Waterbody ID and Name: 
SN 15804 07692
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Colby - headwaters to tidal limit, Amroth
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R73
Waterbody Category and Map Code.: 
GB110061030770
Waterbody ID and Name: 
SN 12314 09060
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ford's Lake - HW to tidal limit, Wiseman's Bridge
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R74
Waterbody Category and Map Code.: 
GB110061030780
Waterbody ID and Name: 
SN 18579 09609
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
New Inn Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R75
Waterbody Category and Map Code.: 
GB110061030800
Waterbody ID and Name: 
SM 80366 05474
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dale Stream - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R76
Waterbody Category and Map Code.: 
GB110061030810
Waterbody ID and Name: 
SN 05713 05752
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Treen Bridge Lake - HW to TL, Cleddau Estuary
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R77
Waterbody Category and Map Code.: 
GB110061030820
Waterbody ID and Name: 
SM 99491 06746
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Williamston Pill - HW to TL, Cleddau Estuary
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R78
Waterbody Category and Map Code.: 
GB110061030830
Waterbody ID and Name: 
SM 83431 07211
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
St Ishmaels Stream - HW to tidal limit, Monk Haven
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R79
Waterbody Category and Map Code.: 
GB110061030840
Waterbody ID and Name: 
SM 78535 07758
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Marloes Stream - headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R80
Waterbody Category and Map Code.: 
GB110061030850
Waterbody ID and Name: 
SM 97138 07067
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, conf with W.field Pill
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R81
Waterbody Category and Map Code.: 
GB110061030860
Waterbody ID and Name: 
SN 02623 08234
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Limpin Lake - HW to tidal limit, Cleddau Estuary
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R82
Waterbody Category and Map Code.: 
GB110061030870
Waterbody ID and Name: 
SN 01519 08465
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed  - HW to tidal limit, N. of Garon Pill
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R83
Waterbody Category and Map Code.: 
GB110061030880
Waterbody ID and Name: 
SM 98134 09356
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llangwm Pill - HW to tidal limit, Cleddau Estuary
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R84
Waterbody Category and Map Code.: 
GB110061030890
Waterbody ID and Name: 
SM 85276 08780
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Sandy Haven Pill, Sandy Hill
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R85
Waterbody Category and Map Code.: 
GB110061030900
Waterbody ID and Name: 
SN 01908 09666
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed -to TL, Cleddau Est S of Landshipping 
Quay 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R86
Waterbody Category and Map Code.: 
GB110061030910
Waterbody ID and Name: 
SN 05475 08458
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031230
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Waddock Lake - headwaters to conf with Cresswell
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R87
Waterbody Category and Map Code.: 
GB110061030930
Waterbody ID and Name: 
SM 82400 09047
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Winterton Marsh - HW to TL, Nr Pickleridge Lagoon
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R88
Waterbody Category and Map Code.: 
GB110061030940
Waterbody ID and Name: 
SM 81693 12164
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Does not Support 
Good 
Disproportionately expensive 
(HR2a) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Broadmoor Stream - HW to tidal limit, Mill Haven
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R89
Waterbody Category and Map Code.: 
GB110061031140
Waterbody ID and Name: 
SM 77097 25814
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dwr Cleifion - HW to tidal limit, Caer Bwdy Bay
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R90
Waterbody Category and Map Code.: 
GB110061031150
Waterbody ID and Name: 
SM 74202 27467
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Whitesands Stream N. - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R91
Waterbody Category and Map Code.: 
GB110061031160
Waterbody ID and Name: 
SM 88265 25557
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1c) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Brandy Brook - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R92
Waterbody Category and Map Code.: 
GB110061031180
Waterbody ID and Name: 
SM 92108 19127
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031340
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Camrose Brook - headwaters to conf with W. 
Cleddau 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R93
Waterbody Category and Map Code.: 
GB110061031200
Waterbody ID and Name: 
SM 92735 27524
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031360
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (S2b)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Stonehall Stream - HW to conf with W. Cleddau
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R94
Waterbody Category and Map Code.: 
GB110061031210
Waterbody ID and Name: 
SN 07002 03824
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Carew - HW to conf with Carew Tidal Mill Pond
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R95
Waterbody Category and Map Code.: 
GB110061031220
Waterbody ID and Name: 
SM 95246 05743
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llanstadwell Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R96
Waterbody Category and Map Code.: 
GB110061031230
Waterbody ID and Name: 
SN 05156 07134
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cresswell River - conf with Waddock Lake to TL
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R97
Waterbody Category and Map Code.: 
GB110061031250
Waterbody ID and Name: 
SM 85963 09306
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to tidal limit, Sandy Haven Pill
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R98
Waterbody Category and Map Code.: 
GB110061031260
Waterbody ID and Name: 
SM 95513 07795
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Westfield Pilll - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R99
Waterbody Category and Map Code.: 
GB110061031280
Waterbody ID and Name: 
SM 96233 11921
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Red Water - HW to TL, Cleddau Est., Little Milford
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R100
Waterbody Category and Map Code.: 
GB110061031290
Waterbody ID and Name: 
SM 95689 13020
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Cleddau Est., Lower 
Freystrop 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R101
Waterbody Category and Map Code.: 
GB110061031300
Waterbody ID and Name: 
SM 93861 14058
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Merlin's Brook - headwaters to conf with h Cleddau
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R102
Waterbody Category and Map Code.: 
GB110061031310
Waterbody ID and Name: 
SM 97557 14210
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Cleddau Estuary, Uzmaston
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R103
Waterbody Category and Map Code.: 
GB110061031320
Waterbody ID and Name: 
SM 99384 15021
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Millin Brook - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R104
Waterbody Category and Map Code.: 
GB110061031330
Waterbody ID and Name: 
SM 99269 19916
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive (P1c), Technically infeasible (B2l)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1c) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Cartlett Brook - HW to conf with W. Cleddau
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R105
Waterbody Category and Map Code.: 
GB110061031340
Waterbody ID and Name: 
SM 94631 20911
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1o) 
Temperature 
High 
High
2,4-dichlorophenoxyacetic 
acid 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Iron 
High 
High
Mecoprop 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Surveillance site:  Yes
W. Cleddau - Anghof conf to Cartlett Brook conf
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Supporting Conditions

Element 
Current status (and 
certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Atrazine 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Chlorfenvinphos 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Simazine 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R106
Waterbody Category and Map Code.: 
GB110061031350
Waterbody ID and Name: 
SM 96904 23757
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031340
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Spittal Brook - headwaters to conf with W. Cleddau
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R107
Waterbody Category and Map Code.: 
GB110061031360
Waterbody ID and Name: 
SM 94404 26748
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031340
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
W. Cleddau - Stonehall Stream conf to Anghof conf
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R108
Waterbody Category and Map Code.: 
GB110061038310
Waterbody ID and Name: 
SN 12432 29045
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038290
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Macrophytes 
High 
High
Phytobenthos 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Wern - headwaters to conf with Eastern Cleddau
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R109
Waterbody Category and Map Code.: 
GB110061038320
Waterbody ID and Name: 
SN 15499 31437
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038290
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2l, B2r)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Eastern Cleddau - headwaters to conf with Wern
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R110
Waterbody Category and Map Code.: 
GB110061038330
Waterbody ID and Name: 
SM 75346 26667
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Alun - headwaters to tidal limit, Porth Clais
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R111
Waterbody Category and Map Code.: 
GB110061038340
Waterbody ID and Name: 
SM 83064 27466
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006109400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Solva - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R112
Waterbody Category and Map Code.: 
GB110061038360
Waterbody ID and Name: 
SM 79803 30838
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cwmwdig Water - HW to tidal limit, nr Abereiddi
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R113
Waterbody Category and Map Code.: 
GB110061038370
Waterbody ID and Name: 
SM 79931 31360
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - headwaters to tidal limit, Abereiddi
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R114
Waterbody Category and Map Code.: 
GB110061038390
Waterbody ID and Name: 
SM 81921 31640
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - headwaters to tidal limit, Porthgain
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R115
Waterbody Category and Map Code.: 
GB110061038410
Waterbody ID and Name: 
SM 85830 32968
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - headwaters to tidal limit, Abercastle
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R116
Waterbody Category and Map Code.: 
GB110061038420
Waterbody ID and Name: 
SM 87157 33640
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - headwaters to tidal limit, Pwllstrodur
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R117
Waterbody Category and Map Code.: 
GB110061038440
Waterbody ID and Name: 
SM 88417 33496
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - headwaters to tidal limit, Abermawr
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R118
Waterbody Category and Map Code.: 
GB110061038450
Waterbody ID and Name: 
SN 11467 35946
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038480
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Brynberian - headwaters to confluence with Nyfer
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R119
Waterbody Category and Map Code.: 
GB110061038460
Waterbody ID and Name: 
SN 06022 34478
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB521006110500
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Gwaun - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R120
Waterbody Category and Map Code.: 
GB110061038470
Waterbody ID and Name: 
SM 99654 37797
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Clun - HW to tidal limit, Aberbach, Dinas Cross
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R121
Waterbody Category and Map Code.: 
GB110061038480
Waterbody ID and Name: 
SN 10806 38236
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038630
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nyfer - conf with Brynberian to conf with Duad
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R122
Waterbody Category and Map Code.: 
GB110061038490
Waterbody ID and Name: 
SM 93079 36814
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Goodwick Brook -  headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R123
Waterbody Category and Map Code.: 
GB110061038500
Waterbody ID and Name: 
SM 89440 35643
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to tidal limit, Aberbach, nr 
Abermawr 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R124
Waterbody Category and Map Code.: 
GB110061038510
Waterbody ID and Name: 
SN 15714 36922
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038480
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nyfer - headwaters to confluence with Brynberian
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R125
Waterbody Category and Map Code.: 
GB110061038520
Waterbody ID and Name: 
SN 02492 39525
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cwmfforest - HW to tidal limit, Aberfforest
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R126
Waterbody Category and Map Code.: 
GB110061038530
Waterbody ID and Name: 
SN 03313 39399
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Rhigian - headwaters to tidal limit, Aber Rhigian
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R127
Waterbody Category and Map Code.: 
GB110061024980
Waterbody ID and Name: 
SR 89567 97744
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Nitrates Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Frainslake Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R128
Waterbody Category and Map Code.: 
GB110061024990
Waterbody ID and Name: 
SS 00340 98291
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Nitrates Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Freahwater East Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R129
Waterbody Category and Map Code.: 
GB110063041370
Waterbody ID and Name: 
SN 36374 58049
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Soden - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R130
Waterbody Category and Map Code.: 
GB110061038560
Waterbody ID and Name: 
SN 07508 38666
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006115200
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Clydach - headwaters to confluence with Nyfer
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R131
Waterbody Category and Map Code.: 
GB110061038570
Waterbody ID and Name: 
SM 92536 39660
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - headwaters to tidal limit, Strumble Head
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R132
Waterbody Category and Map Code.: 
GB110061038590
Waterbody ID and Name: 
SN 01359 39550
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Cwm-yr-Eglwys, Dinas Head
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R133
Waterbody Category and Map Code.: 
GB110061038610
Waterbody ID and Name: 
SN 11106 38801
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038630
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(B1a) 
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Duad - headwaters to confluence with Nyfer
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R134
Waterbody Category and Map Code.: 
GB110061038620
Waterbody ID and Name: 
SN 05440 41211
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to tidal limit, Newport Beach, N. 
end 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R135
Waterbody Category and Map Code.: 
GB110061038630
Waterbody ID and Name: 
SN 08309 39823
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006115200
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nyfer - Confluence with Nant Duad to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R136
Waterbody Category and Map Code.: 
GB110061038650
Waterbody ID and Name: 
SM 92620 29492
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031360
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Annex 8) 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
W. Cleddau - Cleddau N conf to Stonehall stm. 
Conf 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R137
Waterbody Category and Map Code.: 
GB110061038660
Waterbody ID and Name: 
SM 96602 32687
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038700
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant y Bugail - headwaters to conf with Cleddau N.
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R138
Waterbody Category and Map Code.: 
GB110062043470
Waterbody ID and Name: 
SN 71532 58505
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043480
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Very Certain)
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Berwyn - headwaters to confluence with Groes
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R139
Waterbody Category and Map Code.: 
GB110062043490
Waterbody ID and Name: 
SN 70271 60712
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043480
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Groes - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R140
Waterbody Category and Map Code.: 
GB110062043500
Waterbody ID and Name: 
SN 69629 64446
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(PH1a) 
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Teifi - conf with Fflur to confluence with Camddwr
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R141
Waterbody Category and Map Code.: 
GB110062043510
Waterbody ID and Name: 
SN 70793 64726
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043500
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Fflur - headwaters to confluence with Teifi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R142
Waterbody Category and Map Code.: 
GB110062043520
Waterbody ID and Name: 
SN 70274 65630
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043500
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Dimethoate 
High 
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C3a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Teifi - conf with Meurig to conf with Camddwr
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Chlorfenvinphos 
High 
High
River - R143
Waterbody Category and Map Code.: 
GB110062043530
Waterbody ID and Name: 
SN 66233 66022
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2l, B2r)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Camddwr - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R144
Waterbody Category and Map Code.: 
GB110062043540
Waterbody ID and Name: 
SN 78074 64739
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Drinking Water, Water Regulation (impoundment release) 
Reason for Designation: 
GB110062043520
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Very Certain)
Moderate
Not Required (MS) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Dimethoate 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Teifi - headwaters to confluence with Meurig
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Chlorfenvinphos 
High 
High
River - R145
Waterbody Category and Map Code.: 
GB110062043550
Waterbody ID and Name: 
SN 73916 69657
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043520
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2c, B2d, 
C2a) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Meurig - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R146
Waterbody Category and Map Code.: 
GB110061030590
Waterbody ID and Name: 
SN 03215 12111
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Layers Pill - HW to tidal limit, Cleddau Estuary
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R147
Waterbody Category and Map Code.: 
GB110061030600
Waterbody ID and Name: 
SN 03677 12624
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Minwear Brook - HW to tidal limit, Cleddau Estuary
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R148
Waterbody Category and Map Code.: 
GB110061030630
Waterbody ID and Name: 
SN 06328 13638
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Penglyn Brook - HW to tidal limit, Cleddau Estuary
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R149
Waterbody Category and Map Code.: 
GB110061030640
Waterbody ID and Name: 
SN 07111 13708
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Cleddau Est. US Blackpool 
Mill 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R150
Waterbody Category and Map Code.: 
GB110061030650
Waterbody ID and Name: 
SN 02946 14278
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Cleddau Estuary, Slebech 
Park 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R151
Waterbody Category and Map Code.: 
GB110061030660
Waterbody ID and Name: 
SN 08927 14752
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061030670
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (S2b)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Narbeth Brook - headwaters to conf with E. 
Cleddau 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R152
Waterbody Category and Map Code.: 
GB110061030670
Waterbody ID and Name: 
SN 07461 17167
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer) 
GB531006114100
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  No
Eastern Cleddau - conf with Syfynwy to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Atrazine 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Chlorfenvinphos 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Simazine 
High 
High
Tributyltin Compounds 
High 
High
Trichloromethane 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
Carbon Tetrachloride 
High 
High
para - para DDT 
High 
High
Trichloroethylene 
High 
High
River - R153
Waterbody Category and Map Code.: 
GB110061030680
Waterbody ID and Name: 
SN 10435 17230
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061030670
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Longford Brook - HW to conf with E. Cleddau
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R154
Waterbody Category and Map Code.: 
GB110061030700
Waterbody ID and Name: 
SN 07932 20030
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061030670
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Syfynwy - Deepford Brook conf to E. Cleddau conf
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R155
Waterbody Category and Map Code.: 
GB110061030710
Waterbody ID and Name: 
SN 12724 04970
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Saundersfoot Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R156
Waterbody Category and Map Code.: 
GB110061030720
Waterbody ID and Name: 
SN 04248 05466
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
W. Williamston Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R157
Waterbody Category and Map Code.: 
GB110061030730
Waterbody ID and Name: 
SN 19556 08114
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Teague's Wood Stream - HW to tidl limit, Marros
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R158
Waterbody Category and Map Code.: 
GB110061030740
Waterbody ID and Name: 
SN 16806 08225
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Castle Stream - headwaters to tidal limit, Amroth
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R159
Waterbody Category and Map Code.: 
GB110061030980
Waterbody ID and Name: 
SN 06656 07514
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031230
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cresswell - headwaters to conf with Waddock Lake
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R160
Waterbody Category and Map Code.: 
GB110061030990
Waterbody ID and Name: 
SM 85293 12181
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Little Haven Stream - HW to TL, Little Haven
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R161
Waterbody Category and Map Code.: 
GB110061031000
Waterbody ID and Name: 
SM 87111 09851
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Rickeston Pill - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R162
Waterbody Category and Map Code.: 
GB110061031010
Waterbody ID and Name: 
SM 86342 13155
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Swanswell Stream - HW to TL Broad Haven N., S. 
end 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R163
Waterbody Category and Map Code.: 
GB110061031050
Waterbody ID and Name: 
SM 86541 14461
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Haroldstone Stream - HW to TL, Broad Haven N. 
End 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R164
Waterbody Category and Map Code.: 
GB110061031060
Waterbody ID and Name: 
SM 86310 17260
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Druidstone Stream - HW to tidal limit, Druidstone
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R165
Waterbody Category and Map Code.: 
GB110061031070
Waterbody ID and Name: 
SM 86657 18713
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nolton Stream - HW to tidal limit, Nolton Haven
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R166
Waterbody Category and Map Code.: 
GB110061031080
Waterbody ID and Name: 
SM 86023 20938
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Bathesland Water - HW to tidal limit, Newgale
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R167
Waterbody Category and Map Code.: 
GB110061031100
Waterbody ID and Name: 
SM 73123 24360
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Trefeiddan Moor - HW to tidal limit, Porthlysgi
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R168
Waterbody Category and Map Code.: 
GB110061031110
Waterbody ID and Name: 
SM 79036 24656
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Does not Support 
Good 
Disproportionately expensive 
(HR2a) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nine Wells Stream - HW to tidal limit, Nine Wells
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R169
Waterbody Category and Map Code.: 
GB110061025000
Waterbody ID and Name: 
SR 91665 99297
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Nitrates Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Castlemartin Corse - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R170
Waterbody Category and Map Code.: 
GB110061025010
Waterbody ID and Name: 
SM 97392 00477
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Quoits Pill - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R171
Waterbody Category and Map Code.: 
GB110061025020
Waterbody ID and Name: 
SM 95072 00721
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Goldborough Pill East - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R172
Waterbody Category and Map Code.: 
GB110061025030
Waterbody ID and Name: 
SM 93154 00798
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Goldborough Pill West - headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R173
Waterbody Category and Map Code.: 
GB110061025040
Waterbody ID and Name: 
SM 90016 01548
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Angle Stream South - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R174
Waterbody Category and Map Code.: 
GB110061025050
Waterbody ID and Name: 
SN 00289 01379
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Pembroke  - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R175
Waterbody Category and Map Code.: 
GB110061025060
Waterbody ID and Name: 
SM 90899 01774
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Angle Stream North - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R176
Waterbody Category and Map Code.: 
GB110061025070
Waterbody ID and Name: 
SM 93212 02188
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Green Hill Stream - headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R177
Waterbody Category and Map Code.: 
GB110061025150
Waterbody ID and Name: 
SN 10364 00804
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Ritec - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R178
Waterbody Category and Map Code.: 
GB110061025160
Waterbody ID and Name: 
SN 00740 03087
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cocheston Pill - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R179
Waterbody Category and Map Code.: 
GB110061025170
Waterbody ID and Name: 
SN 00925 04640
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mill Bay Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R180
Waterbody Category and Map Code.: 
GB110061025210
Waterbody ID and Name: 
SN 02728 03233
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ford Pill - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R181
Waterbody Category and Map Code.: 
GB110061025220
Waterbody ID and Name: 
SR 97733 95220
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Nitrates Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific, Wider Environment 
Reason for Designation: 
GB611008590003
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Bosherston Lilly Ponds - Headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R182
Waterbody Category and Map Code.: 
GB110063041690
Waterbody ID and Name: 
SN 65361 76264
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041710
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llanfihangel - headwaters to conf with Ystwyth
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R183
Waterbody Category and Map Code.: 
GB110061031170
Waterbody ID and Name: 
SM 93391 17173
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031340
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Pelcomb Brook - headwaters to conf with W. 
Cleddau 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R184
Waterbody Category and Map Code.: 
GB110062039160
Waterbody ID and Name: 
SN 18086 47100
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB511006206900
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Disproportionately expensive (P1a), Technically infeasible (B2l)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mwidan - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R185
Waterbody Category and Map Code.: 
GB110061030790
Waterbody ID and Name: 
SM 92164 05025
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, DS Milford Oil Refinery
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R186
Waterbody Category and Map Code.: 
GB110062039250
Waterbody ID and Name: 
SN 65897 55257
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Phosphate 
Moderate (Very Certain)
Good
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Brefi - headwaters to confluence with Teifi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R187
Waterbody Category and Map Code.: 
GB110063041430
Waterbody ID and Name: 
SN 44472 59800
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cwinten - headwater to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R188
Waterbody Category and Map Code.: 
GB110061038640
Waterbody ID and Name: 
SN 11348 45165
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ceibwr - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R189
Waterbody Category and Map Code.: 
GB110062038990
Waterbody ID and Name: 
SN 26297 38238
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062039040
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cych -  confluence with Cneifa to confluence Dulas
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R190
Waterbody Category and Map Code.: 
GB110061025200
Waterbody ID and Name: 
SN 05082 02283
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Radford Pill - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R191
Waterbody Category and Map Code.: 
GB110063041420
Waterbody ID and Name: 
SN 43639 59503
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Drywi - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R192
Waterbody Category and Map Code.: 
GB110061031190
Waterbody ID and Name: 
SM 95807 20662
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061031340
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Rudbaxton Water - HW to conf with W. Cleddau
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R193
Waterbody Category and Map Code.: 
GB110061030690
Waterbody ID and Name: 
SN 06460 19882
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061030700
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2l, B2r)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Deepford Brook - headwaters to conf with Syfynwy
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R194
Waterbody Category and Map Code.: 
GB110063036470
Waterbody ID and Name: 
SN 32238 54059
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Hawen - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R195
Waterbody Category and Map Code.: 
GB110061031240
Waterbody ID and Name: 
SM 90166 06765
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Huberston Pill - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R196
Waterbody Category and Map Code.: 
GB110062039240
Waterbody ID and Name: 
SN 60261 52240
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2l, B2r)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Moderate (Very Certain)
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Dulas - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R197
Waterbody Category and Map Code.: 
GB110062043480
Waterbody ID and Name: 
SN 68127 59792
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110062043562
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Brennig - headwaters to confluence with Teifi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R198
Waterbody Category and Map Code.: 
GB110063041560
Waterbody ID and Name: 
SN 78876 79427
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110063041570
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2d, C2a, 
PH2a) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Mynach - headwaters to confluence with Rheidol
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R199
Waterbody Category and Map Code.: 
GB110061030920
Waterbody ID and Name: 
SN 02167 10843
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to TL, Cleddau Estuary, Martletwy
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R200
Waterbody Category and Map Code.: 
GB110063036490
Waterbody ID and Name: 
SN 35622 57050
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ffynnon-Ddewi - headwaters to tidal limit
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R201
Waterbody Category and Map Code.: 
GB110061031270
Waterbody ID and Name: 
SM 98264 10873
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006114100
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Sprinkle Pill - HW to TL, Cleddau Estuary, Hook
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R202
Waterbody Category and Map Code.: 
GB110061025080
Waterbody ID and Name: 
SM 91981 02251
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Martin's Haven Pill - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R203
Waterbody Category and Map Code.: 
GB110063041390
Waterbody ID and Name: 
SN 37661 59140
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant y Grogal - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R204
Waterbody Category and Map Code.: 
GB110061038380
Waterbody ID and Name: 
SM 83539 32294
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Unnamed - HW to tidal limit, Aberfelin, Trefin
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R205
Waterbody Category and Map Code.: 
GB110061038680
Waterbody ID and Name: 
SM 94804 33750
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110061038700
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cleddau N. - headwaters to conf with Nant y Bugail
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R206
Waterbody Category and Map Code.: 
GB110063036450
Waterbody ID and Name: 
SN 23857 51676
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB651009030000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gwrddon - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L1
Waterbody Category and Map Code.: 
GB31039942
Waterbody ID and Name: 
SN 06349 29687
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Rosebush Reservoir
Lake - L2
Waterbody Category and Map Code.: 
GB31040087
Waterbody ID and Name: 
SN 03763 25401
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llys-y-frân Reservoir
Lake - L3
Waterbody Category and Map Code.: 
GB31038398
Waterbody ID and Name: 
SN 77841 67726
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Drinking Water
Reason for Designation: 

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Pond y Gwaith
Lake - L4
Waterbody Category and Map Code.: 
GB31038390
Waterbody ID and Name: 
SN 78203 67509
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
littoral Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Macrophytes 
Good 
Good
Phytobenthos 
High 
High
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Good 
Good
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L5
Waterbody Category and Map Code.: 
GB31038394
Waterbody ID and Name: 
SN 78927 67614
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
High 
High
Phytoplankton 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Good 
Good
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
Good 
Good
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Llyn Hîr
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L6
Waterbody Category and Map Code.: 
GB31038409
Waterbody ID and Name: 
SN 79264 67157
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Natura 2000 (Habitats and/or Birds 
Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
littoral Invertebrates 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Macrophytes 
Good 
Good
Phytobenthos 
High 
High
Phytoplankton 
Moderate (Quite Certain)
Moderate
Disproportionately expensive (P1a), Technically infeasible 
(B2o) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Good 
Good
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Does not Support 
Good 
Disproportionately expensive 
(HL2a) 
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L7
Waterbody Category and Map Code.: 
GB31037596
Waterbody ID and Name: 
SN 74455 87505
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Regulation (impoundment release), Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Total Phosphorus 
Good 
Good
Copper 
Moderate (Very Certain)
Moderate
Technically infeasible (C3a)
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L8
Waterbody Category and Map Code.: 
GB31037641
Waterbody ID and Name: 
SN 79189 87715
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Llygad Rheidol
Waterbody Category and Map Code.: 
GB31037834
Waterbody ID and Name: 
SN 79556 81492
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
littoral Invertebrates 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Macrophytes 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
Moderate (Uncertain)
Moderate
Technically infeasible (ANC2a)
Ammonia (Phys-Chem) 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L10
Waterbody Category and Map Code.: 
GB31041602
Waterbody ID and Name: 
SR 97695 95319
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Nitrates Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Wider Environment
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Macrophytes 
Good 
Good
Phytobenthos 
High 
High
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(DO1a) 
Total Phosphorus 
Good 
Good
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
 
Surveillance site:  No
Lily Ponds or Bosherston Lake (includes Central, 
Lower and Upper) 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment

B.8  Loughor to Taf river catchment 
 
Rivers and lakes 
 
There are 126 river water bodies (of which 9 are designated as heavily modified) and 5 lake water bodies (of which 5 are designated as heavily modified) within the Loughor to Taf river catchment. 

 

 
Good or high now 
Total number of water bodies 
Water body category 
Good or high in 2015 
Good or high in 2021 
Good or high in 2027 
Less than good in 2015 
Natural 
Rivers 
36 
53 
53 
117 
64 
117 
Lakes 
0 
0 
0 
0 
0 
0 
Artificial/Heavily modified water bodies 
HMWB 
4 
4 
4 
14 
10 
14 
AWB 
0 
0 
0 
0 
0 
0 

 

## 



Water body tables for rivers and lakes in the Loughor to Taf catchment  
 
This section contains detailed information on the current status and objectives for river and lake water bodies in the catchment. The tables are arranged by water body type (in the order rivers then lakes) and by map code number within these groupings. Note: In the following water body tables, only the relevant elements of the status objectives (shown under the orange sub headings) are shown. 

River - R1
Waterbody Category and Map Code.: 
GB110060029590
Waterbody ID and Name: 
SN 44416 20357
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer) 
GB531006013400
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
2,4-dichlorophenoxyacetic 
acid 
High 
High
Arsenic 
High 
High
Copper 
Moderate (Uncertain)
High
Iron 
High 
High
Mecoprop 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  Yes
Tywi - Bishop's Pond to conf with Gwili and TL
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R2
Waterbody Category and Map Code.: 
GB110059025540
Waterbody ID and Name: 
SS 50116 87962
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590001
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Oxwich Marsh Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R3
Waterbody Category and Map Code.: 
GB110059025550
Waterbody ID and Name: 
SS 57457 88429
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590001
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Bishopston Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R4
Waterbody Category and Map Code.: 
GB110059025560
Waterbody ID and Name: 
SS 41246 91211
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Hillend Stream - headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R5
Waterbody Category and Map Code.: 
GB110059025580
Waterbody ID and Name: 
SS 55245 89412
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059025570
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Pennard Pill East - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R6
Waterbody Category and Map Code.: 
GB110059025590
Waterbody ID and Name: 
SS 48713 93485
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Leason Pill - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R7
Waterbody Category and Map Code.: 
GB110059025610
Waterbody ID and Name: 
SS 46478 90427
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Burry Pill - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R8
Waterbody Category and Map Code.: 
GB110060036370
Waterbody ID and Name: 
SN 75672 45739
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036350
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Gwenffrwd - headwaters to confluence with Tywi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R9
Waterbody Category and Map Code.: 
GB110060036380
Waterbody ID and Name: 
SN 79051 48068
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer) 
GB110060036350
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Bad (Very Certain)
Bad
Not Required (MS) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(PH1a) 
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
Moderate (Very Certain)
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Tywi - Llyn Brianne to confluence with Doethie
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R10
Waterbody Category and Map Code.: 
GB110060036390
Waterbody ID and Name: 
SN 73681 51545
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036360
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Moderate (Uncertain)
Moderate
Technically infeasible (B2o)
Macrophytes 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Pysgotwr Fawr - headwaters to conf with Doethie
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R11
Waterbody Category and Map Code.: 
GB110060036400
Waterbody ID and Name: 
SN 76932 50853
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036360
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Moderate (Uncertain)
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Doethie - headwaters to conf with Pysgotwr Fawr
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R12
Waterbody Category and Map Code.: 
GB110059032310
Waterbody ID and Name: 
SN 60065 06914
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Urban Waste Water Treatment Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2r)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
2,4-dichlorophenoxyacetic 
acid 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Surveillance site:  Yes
Loughor - confluence with Aman to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Supporting Conditions

Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Element 
Current status (and 
certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Quite Certain)
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Benzene 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
Moderate (Quite Certain)
Moderate
Technically infeasible (C2a)
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Tributyltin Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
Trichloroethylene 
High 
High
River - R13
Waterbody Category and Map Code.: 
GB110060029040
Waterbody ID and Name: 
SN 50757 23586
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2c, B2d)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Cloidach - headwaters to confluence with Cothi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R14
Waterbody Category and Map Code.: 
GB110060029050
Waterbody ID and Name: 
SN 37325 11048
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Rotten Pill - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R15
Waterbody Category and Map Code.: 
GB110060029070
Waterbody ID and Name: 
SN 44052 22015
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029080
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Moderate (Quite Certain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Crychiau - headwaters to confluence with Gwili
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R16
Waterbody Category and Map Code.: 
GB110060029080
Waterbody ID and Name: 
SN 41040 25697
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029600
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Uncertain)
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gwili -  Duad conf to conf with Tywi at spring TL
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R17
Waterbody Category and Map Code.: 
GB110060029090
Waterbody ID and Name: 
SN 37799 26905
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029080
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Quite Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Duad - conf with Gochen to confluence with Gwili
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R18
Waterbody Category and Map Code.: 
GB110060029100
Waterbody ID and Name: 
SN 31696 13969
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Allt y Gelli - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R19
Waterbody Category and Map Code.: 
GB110060029110
Waterbody ID and Name: 
SN 33115 19440
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029410
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Macrophytes 
Good 
Good
Phytobenthos 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Cywyn - conf with Cynnen to conf with Nant 
Coedcae 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R20
Waterbody Category and Map Code.: 
GB110060029120
Waterbody ID and Name: 
SN 33776 18401
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029410
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Coedcae - headwaters to confluence with 
Cywyn 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R21
Waterbody Category and Map Code.: 
GB110060029130
Waterbody ID and Name: 
SN 37876 22512
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029110
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
Moderate (Uncertain)
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Cynnen - headwaters to confluence with the Cywyn
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R22
Waterbody Category and Map Code.: 
GB110060029150
Waterbody ID and Name: 
SN 38098 11840
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Bronyn - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R23
Waterbody Category and Map Code.: 
GB110060029160
Waterbody ID and Name: 
SN 29128 11703
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Coran - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R24
Waterbody Category and Map Code.: 
GB110060029170
Waterbody ID and Name: 
SN 34737 11787
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llansteffan Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R25
Waterbody Category and Map Code.: 
GB110060029200
Waterbody ID and Name: 
SN 25466 14360
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036280
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Llanddowror Brook - headwater to conf with Taf
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R26
Waterbody Category and Map Code.: 
GB110060029220
Waterbody ID and Name: 
SN 41136 16112
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Cwm Croes y Ceiliog - HW to Tidal Limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R27
Waterbody Category and Map Code.: 
GB110060029230
Waterbody ID and Name: 
SN 32919 12476
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mwche Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R28
Waterbody Category and Map Code.: 
GB110060029260
Waterbody ID and Name: 
SN 44782 18702
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (S2b)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Nant Pibwr - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R29
Waterbody Category and Map Code.: 
GB110060029270
Waterbody ID and Name: 
SN 42689 19673
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and 
certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Maes-y-lan - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R30
Waterbody Category and Map Code.: 
GB110060029280
Waterbody ID and Name: 
SN 64233 18578
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Annex 8) 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Cennen - headwaters to confluence with Tywi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R31
Waterbody Category and Map Code.: 
GB110060029290
Waterbody ID and Name: 
SN 47800 21197
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer) 
GB110060029590
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Macrophytes 
High 
High
Phytobenthos 
Good 
Good
Surveillance site:  Yes
Tywi - confluence with Cothi to spring tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 

## Supporting Elements

Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Element 
Current status (and 
certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
2,4-dichlorophenol 
High 
High
2,4-dichlorophenoxyacetic 
acid 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Dimethoate 
High 
High
Iron 
High 
High
Linuron 
High 
High
Mecoprop 
High 
High
Permethrin 
High 
High
Toluene 
High 
High
Zinc 
Moderate (Quite Certain)
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Atrazine 
High 
High
Benzene 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Chlorfenvinphos 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Napthalene 
High 
High
Nickel And Its Compounds 
High 
High
Simazine 
High 
High
Tributyltin Compounds 
High 
High
Trifluralin 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
Trichloroethylene 
High 
High
River - R32
Waterbody Category and Map Code.: 
GB110060029300
Waterbody ID and Name: 
SN 72909 20630
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029370
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Clydach - headwaters to confluence with Sawdde
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R33
Waterbody Category and Map Code.: 
GB110060029310
Waterbody ID and Name: 
SN 55485 22455
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Dulas - conf with Sannan to confluence with Tywi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R34
Waterbody Category and Map Code.: 
GB110060029320
Waterbody ID and Name: 
SN 37606 19031
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Tawelon - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R35
Waterbody Category and Map Code.: 
GB110060029330
Waterbody ID and Name: 
SN 23555 18019
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036280
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Moderate (Quite Certain)
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
Moderate (Quite Certain)
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Fenni - headwaters to confluence with Taf
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R36
Waterbody Category and Map Code.: 
GB110060029340
Waterbody ID and Name: 
SN 79402 23950
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029370
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Sawdde - headwaters to confluence with Clydach
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R37
Waterbody Category and Map Code.: 
GB110060029350
Waterbody ID and Name: 
SN 47362 22553
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029290
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Annell - headwaters to confluence with Tywi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R38
Waterbody Category and Map Code.: 
GB110060029360
Waterbody ID and Name: 
SN 21249 18609
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036280
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Gronw - headwaters to confluence with Taf
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R39
Waterbody Category and Map Code.: 
GB110060029370
Waterbody ID and Name: 
SN 71141 26665
National Grid Reference: 
Poor
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Sawdde - conf with Clydach to confluence with 
Tywi 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R40
Waterbody Category and Map Code.: 
GB110060029380
Waterbody ID and Name: 
SN 59730 23568
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Myddfi - headwaters to confluence with Tywi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R41
Waterbody Category and Map Code.: 
GB110060029400
Waterbody ID and Name: 
SN 43655 12623
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Very Certain)
Moderate
Technically infeasible (B2r)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Cypermethrin 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Gwendraeth Fach - headwaters to tidal limit
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R42
Waterbody Category and Map Code.: 
GB110060029410
Waterbody ID and Name: 
SN 31564 16172
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cywyn - conf with Nant Coedcae to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R43
Waterbody Category and Map Code.: 
GB110059073360
Waterbody ID and Name: 
SN 54044 05847
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive), 
Urban Waste Water Treatment Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Morlais - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R44
Waterbody Category and Map Code.: 
GB110060035940
Waterbody ID and Name: 
SN 84104 32280
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036270
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Gwydderig - headwaters to confluence with Bran
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R45
Waterbody Category and Map Code.: 
GB110060035950
Waterbody ID and Name: 
SN 77917 35658
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036270
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Quite Certain)
Moderate
Disproportionately expensive (M5a), Technically infeasible 
(B2p) 
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Bran - conf with Crychan to conf with Gwydderig
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R46
Waterbody Category and Map Code.: 
GB110060035960
Waterbody ID and Name: 
SN 82247 38833
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060035950
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Crychan - headwaters to confluence with Bran
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R47
Waterbody Category and Map Code.: 
GB110060035970
Waterbody ID and Name: 
SN 80558 43199
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060035950
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Very Certain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Bran - headwaters to confluence with Crychan
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R48
Waterbody Category and Map Code.: 
GB110060035980
Waterbody ID and Name: 
SN 53135 30123
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036300
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Marlais - conf with Pib to confluence with Cothi
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R49
Waterbody Category and Map Code.: 
GB110060036000
Waterbody ID and Name: 
SN 51338 32920
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060035980
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Marlais - headwaters to confluence with Melinddwr
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R50
Waterbody Category and Map Code.: 
GB110060036020
Waterbody ID and Name: 
SN 52926 34387
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Clydach - headwaters to confluence with Cothi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R51
Waterbody Category and Map Code.: 
GB110060036030
Waterbody ID and Name: 
SN 57925 34733
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Gorlech - headwaters to confluence with Cothi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R52
Waterbody Category and Map Code.: 
GB110060036040
Waterbody ID and Name: 
SN 65087 38326
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036070
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Dimethoate 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Surveillance site:  No
Cothi - conf with Twrch to confluence with Marlais
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Chlorfenvinphos 
High 
High
River - R53
Waterbody Category and Map Code.: 
GB110060036050
Waterbody ID and Name: 
SN 70997 45500
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036090
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cothi - headwaters to confluence with Twrch
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R54
Waterbody Category and Map Code.: 
GB110060036060
Waterbody ID and Name: 
SN 60835 36213
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036010
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Quite Certain)
Poor
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Melinddwr - headwaters to confluence with Marlais
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R55
Waterbody Category and Map Code.: 
GB110060036070
Waterbody ID and Name: 
SN 67136 39101
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Good
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Annell - headwaters to confluence with Cothi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R56
Waterbody Category and Map Code.: 
GB110060036080
Waterbody ID and Name: 
SN 61326 37667
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036010
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Marlais - headwaters to confluence with Melinddwr
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R57
Waterbody Category and Map Code.: 
GB110060036090
Waterbody ID and Name: 
SN 65668 47940
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036040
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Twrch - headwaters to confluence with Cothi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R58
Waterbody Category and Map Code.: 
GB110060036100
Waterbody ID and Name: 
SN 45178 29011
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036110
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gwili - headwaters to confluence with Alltwalis
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R59
Waterbody Category and Map Code.: 
GB110060036120
Waterbody ID and Name: 
SN 37083 27598
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029090
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gochen - headwaters to confluence with Duad
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R60
Waterbody Category and Map Code.: 
GB110060036130
Waterbody ID and Name: 
SN 42076 29579
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036110
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Alltwalis - headwaters to confluence with Gwili
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R61
Waterbody Category and Map Code.: 
GB110060036160
Waterbody ID and Name: 
SN 32336 22687
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029110
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(P1a) 
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cywyn - headwaters to confluence with Cynnen
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R62
Waterbody Category and Map Code.: 
GB110060036170
Waterbody ID and Name: 
SN 26198 28004
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2l, B2r)
Invertebrates 
High 
High
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Cynin - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R63
Waterbody Category and Map Code.: 
GB110060036180
Waterbody ID and Name: 
SN 71038 28540
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Bran - confluence with Ydw to confluence with Tywi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R64
Waterbody Category and Map Code.: 
GB110060036200
Waterbody ID and Name: 
SN 55721 25245
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029310
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Sannan - headwaters to confluence with Dulas
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R65
Waterbody Category and Map Code.: 
GB110060036220
Waterbody ID and Name: 
SN 77930 27862
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036180
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Bran - headwaters to confluence with Ydw
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R66
Waterbody Category and Map Code.: 
GB110060036230
Waterbody ID and Name: 
SN 62643 30145
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036210
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulais - headwaters to confluence with Ddu
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R67
Waterbody Category and Map Code.: 
GB110060036240
Waterbody ID and Name: 
SN 74203 29680
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036180
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ydw - headwaters to confluence with Bran
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R68
Waterbody Category and Map Code.: 
GB110059032070
Waterbody ID and Name: 
SN 66758 01519
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB GB110059025430
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Llan - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R69
Waterbody Category and Map Code.: 
GB110059032080
Waterbody ID and Name: 
SN 61480 03628
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Urban Waste Water Treatment Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Phosphate 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulais - headwaters to confluence with Loughor
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R70
Waterbody Category and Map Code.: 
GB110059032110
Waterbody ID and Name: 
SN 57669 08805
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Urban Waste Water Treatment Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1b) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Gwili - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R71
Waterbody Category and Map Code.: 
GB110059032120
Waterbody ID and Name: 
SN 61335 14117
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032310
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Invertebrates 
Moderate (Uncertain)
Moderate
Technically infeasible (B2r)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Loughor - conf with Marlais to conf with Aman
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R72
Waterbody Category and Map Code.: 
GB110059032130
Waterbody ID and Name: 
SN 64671 16030
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032120
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Macrophytes 
High 
High
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Loughor - headwaters to confluence with Marlais
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R73
Waterbody Category and Map Code.: 
GB110059032150
Waterbody ID and Name: 
SN 72895 13949
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032140
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Aman - headwaters to confluence with Garnant
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R74
Waterbody Category and Map Code.: 
GB110059032160
Waterbody ID and Name: 
SN 61744 15720
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032120
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Marlais - headwaters to confluence with Loughor
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R75
Waterbody Category and Map Code.: 
GB110059032230
Waterbody ID and Name: 
SN 70236 11632
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032140
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Macrophytes 
High 
High
Phytobenthos 
Moderate (Uncertain)
Moderate
Technically infeasible (B2r)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Garnant - headwaters to confluence with Aman
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R76
Waterbody Category and Map Code.: 
GB110059025620
Waterbody ID and Name: 
SS 60368 92128
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008260000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Disproportionately expensive (A1a), Technically infeasible (B2f, 
B2n) 
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(A1a) 
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(A1a) 
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
 
Surveillance site:  Yes
Clyne River - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R77
Waterbody Category and Map Code.: 
GB110059025640
Waterbody ID and Name: 
SS 46549 93517
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Great Pill North Gower - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R78
Waterbody Category and Map Code.: 
GB110059025660
Waterbody ID and Name: 
SS 53290 94585
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive, 
Urban Waste Water Treatment Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Morlais River -  headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R79
Waterbody Category and Map Code.: 
GB110059025670
Waterbody ID and Name: 
SS 55361 95016
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Urban Waste Water Treatment Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Cedi - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R80
Waterbody Category and Map Code.: 
GB110059025680
Waterbody ID and Name: 
SS 56812 95940
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive, 
Urban Waste Water Treatment Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Cafngolau - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R81
Waterbody Category and Map Code.: 
GB110059025720
Waterbody ID and Name: 
SN 48700 01114
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulais - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R82
Waterbody Category and Map Code.: 
GB110059026010
Waterbody ID and Name: 
SS 51720 94313
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No
SSSI (Non-N2K) related: 
Not Designated A/HMWB GB531005913500
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Wernffrwd Stream - headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R83
Waterbody Category and Map Code.: 
GB110060041350
Waterbody ID and Name: 
SN 77261 55651
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036380
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Phytobenthos 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Camddwr - headwaters to Llyn Brianne reservoir
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R84
Waterbody Category and Map Code.: 
GB110060041360
Waterbody ID and Name: 
SN 80422 55749
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036380
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Invertebrates 
Moderate (Quite Certain)
Moderate
Technically infeasible (PH2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Iron 
High 
High
Zinc 
Moderate (Uncertain)
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Does not Support Good
Does not Support 
Good 
Technically infeasible (M1f)
Surveillance site:  No
Tywi - headwaters to Llyn Brianne reservoir
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R85
Waterbody Category and Map Code.: 
GB110060036260
Waterbody ID and Name: 
SN 64746 30661
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036210
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ddu - headwaters to confluence with Dulais
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R86
Waterbody Category and Map Code.: 
GB110060036270
Waterbody ID and Name: 
SN 75754 33049
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Gwydderig - conf with Bran to confluence with Tywi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R87
Waterbody Category and Map Code.: 
GB110060036280
Waterbody ID and Name: 
SN 20842 29630
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Very Certain)
Moderate
Technically infeasible (B2l, B2r)
Invertebrates 
High 
High
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
2,4-dichlorophenoxyacetic 
acid 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Dimethoate 
High 
High
Iron 
High 
High
Linuron 
High 
High
Mecoprop 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Surveillance site:  Yes
Taf - headwaters to confluence with Cynin
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Supporting Conditions

Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Element 
Current status (and 
certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Atrazine 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Chlorfenvinphos 
High 
High
Diuron 
High 
High
Fluoranthene 
High 
High
Isoproturon 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Pentachlorophenol 
High 
High
Simazine 
High 
High
Tributyltin Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R88
Waterbody Category and Map Code.: 
GB110060036290
Waterbody ID and Name: 
SN 68433 31567
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Marlais - headwaters to confluence with Tywi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R89
Waterbody Category and Map Code.: 
GB110060036300
Waterbody ID and Name: 
SN 53192 25349
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029290
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2d, B2o)
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Cothi - headwaters to confluence with Tywi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R90
Waterbody Category and Map Code.: 
GB110060036310
Waterbody ID and Name: 
SN 72724 32244
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mynys - headwaters to confluence with Tywi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R91
Waterbody Category and Map Code.: 
GB110060036330
Waterbody ID and Name: 
SN 69681 36319
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Dulais - headwaters to confluence with Tywi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R92
Waterbody Category and Map Code.: 
GB110060036340
Waterbody ID and Name: 
SN 75366 40264
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036350
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Gwenlais - headwaters to confluence with Tywi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R93
Waterbody Category and Map Code.: 
GB110060036350
Waterbody ID and Name: 
SN 75393 37365
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer) 
GB110060036250
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  No
Tywi - conf with Doethie to conf with Gwydderig
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R94
Waterbody Category and Map Code.: 
GB110060036360
Waterbody ID and Name: 
SN 77055 47329
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036350
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Invertebrates 
Moderate (Uncertain)
Moderate
Technically infeasible (PH2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
Moderate (Very Certain)
Moderate
Technically infeasible (PH2a)
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Doethie -  Pysgotwr Fawr conf to conf with Tywi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R95
Waterbody Category and Map Code.: 
GB110059025440
Waterbody ID and Name: 
SS 53123 98773
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive, 
Urban Waste Water Treatment Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dafen Pill - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R96
Waterbody Category and Map Code.: 
GB110059025450
Waterbody ID and Name: 
SN 57812 01494
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Natura 2000 (Habitats and/or Birds Directive), Urban Waste Water 
Treatment Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Iron 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llannant Pill - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R97
Waterbody Category and Map Code.: 
GB110059025460
Waterbody ID and Name: 
SN 59106 01853
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant y Garreg - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R98
Waterbody Category and Map Code.: 
GB110059025480
Waterbody ID and Name: 
SN 49969 00956
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a, M3b)
Surveillance site:  No
Tre-Beddrod - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Appropriate channel maintenance strategies and techniques - woody debris
In Place
Appropriate channel maintenance strategies and techniques - minimise disturbance to channel 
bed and margins 
In Place
Appropriate timing (vegetation control) 
In Place
Appropriate vegetation control technique 
In Place
Selective vegetation control regime 
In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Increase in-channel morphological diversity 
Not In Place
Re-opening existing culverts
Not In Place
Alteration of channel bed (within culvert) 
Not In Place
Flood bunds (earth banks, in place of floodwalls)
Not In Place
Set-back embankments 
Not In Place
Improve floodplain connectivity 
Not In Place
Remove obsolete structure 
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Appropriate techniques (invasive species) 
Not In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Sediment management strategies (develop and revise)
Not In Place
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R99
Waterbody Category and Map Code.: 
GB110059025490
Waterbody ID and Name: 
SN 46341 00880
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Barnaby Pil - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R100
Waterbody Category and Map Code.: 
GB110059025500
Waterbody ID and Name: 
SN 53149 01483
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB531005913500
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Invertebrates 
Good 
Good
Macrophytes 
Good 
Good
Phytobenthos 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  Yes
Dafen - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a, M3b)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Appropriate channel maintenance strategies and techniques - woody debris
In Place
Appropriate channel maintenance strategies and techniques - minimise disturbance to channel 
bed and margins 
In Place
Appropriate timing (vegetation control) 
In Place
Appropriate vegetation control technique 
In Place
Selective vegetation control regime 
In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Increase in-channel morphological diversity 
Not In Place
Re-opening existing culverts
Not In Place
Alteration of channel bed (within culvert) 
Not In Place
Flood bunds (earth banks, in place of floodwalls)
Not In Place
Set-back embankments 
Not In Place
Improve floodplain connectivity 
Not In Place
Remove obsolete structure 
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Appropriate techniques (invasive species) 
Not In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Sediment management strategies (develop and revise)
Not In Place
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Lead And Its Compounds 
High 
High
Trichloroethylene 
High 
High
River - R101
Waterbody Category and Map Code.: 
GB110059025510
Waterbody ID and Name: 
SS 42644 87546
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590002
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mewslade Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R102
Waterbody Category and Map Code.: 
GB110059025520
Waterbody ID and Name: 
SS 54340 88847
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590001
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Pennard Pill - un-named conf in Parkmill to TL
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R103
Waterbody Category and Map Code.: 
GB110059025530
Waterbody ID and Name: 
SS 59523 88445
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590001
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Caswell Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R104
Waterbody Category and Map Code.: 
GB110060036140
Waterbody ID and Name: 
SN 36971 31666
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029090
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Duad - headwaters to confluence with Gochen
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R105
Waterbody Category and Map Code.: 
GB110060036320
Waterbody ID and Name: 
SN 74838 38717
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036350
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dunant - headwaters to confluence with Tywi
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R106
Waterbody Category and Map Code.: 
GB110060029240
Waterbody ID and Name: 
SN 15348 15389
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036280
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Marlais - headwaters to confluence with Taf
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R107
Waterbody Category and Map Code.: 
GB110059032140
Waterbody ID and Name: 
SN 65067 13071
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032310
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Aman - conf with Garnant to conf with Loughor
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R108
Waterbody Category and Map Code.: 
GB110059025470
Waterbody ID and Name: 
SN 44925 01532
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Dyfatty - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R109
Waterbody Category and Map Code.: 
GB110059025570
Waterbody ID and Name: 
SS 53805 89749
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059025520
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Pennard Pill West - headwaters to tidal limit
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R110
Waterbody Category and Map Code.: 
GB110060029250
Waterbody ID and Name: 
SN 37363 14994
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Quite Certain)
Poor
Technically infeasible (B2a)
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Fernhill Brook - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R111
Waterbody Category and Map Code.: 
GB110059032090
Waterbody ID and Name: 
SN 51820 01684
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Lliedi - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R112
Waterbody Category and Map Code.: 
GB110060036150
Waterbody ID and Name: 
SN 30311 23470
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a, B2r)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Quite Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Dewi Fawr - headwaters to confluence with Cynin
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R113
Waterbody Category and Map Code.: 
GB110060036190
Waterbody ID and Name: 
SN 57720 26594
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029310
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dulas - headwaters to confluence with Sannan
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R114
Waterbody Category and Map Code.: 
GB110060029180
Waterbody ID and Name: 
SN 28581 13736
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Morfa-bach Stream - headwaters to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R115
Waterbody Category and Map Code.: 
GB110060029390
Waterbody ID and Name: 
SN 39162 17725
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Pwntan - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R116
Waterbody Category and Map Code.: 
GB110060036110
Waterbody ID and Name: 
SN 39714 28340
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060029080
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(DO1a) 
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Gwili - conf with Alltwalis to conf with Duad
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R117
Waterbody Category and Map Code.: 
GB110060029190
Waterbody ID and Name: 
SN 40762 14368
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Cwmyrarian - headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R118
Waterbody Category and Map Code.: 
GB110059032100
Waterbody ID and Name: 
SS 59796 99670
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Storage - 
non-specific 
GB531005913500
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
Moderate (Very Certain)
Moderate
Technically infeasible (B2r)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  Yes
Lliw - headwaters to confluence with Llan
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Quite Certain)
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
Moderate (Quite Certain)
Moderate
Technically infeasible (C2a)
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R119
Waterbody Category and Map Code.: 
GB110059025600
Waterbody ID and Name: 
SS 62749 92800
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB641008260000
Downstream Waterbody ID:

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a, M3b)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Brynmill Stream - headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R120
Waterbody Category and Map Code.: 
GB110060036010
Waterbody ID and Name: 
SN 63082 36544
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036070
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Marlais - conf with Melinddwr to conf with Cothi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R121
Waterbody Category and Map Code.: 
GB110060036210
Waterbody ID and Name: 
SN 64767 27208
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060036250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(DO1a) 
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Dulais - conf with Ddu to confluence with Tywi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R122
Waterbody Category and Map Code.: 
GB110060029210
Waterbody ID and Name: 
SN 38555 14467
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Coch-y-barlya - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R123
Waterbody Category and Map Code.: 
GB110060035990
Waterbody ID and Name: 
SN 51738 29943
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110060035980
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Pib - headwaters to confluence with Marlais
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R124
GB110060029061
Waterbody ID and Name: 
SN 54479 13120
National Grid Reference: 
Moderate Good by 2015
Good Ecological Status by 2015 No Not Designated A/HMWB GB110060029062
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R125
Waterbody Category and Map Code.: 
GB110060029062
Waterbody ID and Name: 
SN 47135 08501
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015 No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB531006013400
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Quite Certain)
Good
Temperature 
High 
High
Copper 
High 
High
Cypermethrin 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Gwendraeth Fawr - Afan Goch to tidal limit
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R126
Waterbody Category and Map Code.: 
GB110060036250
Waterbody ID and Name: 
SN 63646 22894
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Drinking Water Protected Area, Freshwater Fish Directive, Natura 2000 
(Habitats and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Reason for Designation: 
Drinking Water, Water Regulation (impoundment release), Water Regulation 
(strategic transfer) 
GB110060029290
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Uncertain)
High
Zinc 
Moderate (Very Certain)
High
Ammonia (Annex 8) 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Surveillance site:  No
Tywi (Llandovery Bran to Cothi confl) 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Ensure that the thermal regime in waters downstream of the impounding works is consistent with 
good status conditions. 
Not In Place
Ensure that good status of dissolved oxygen levels is being achieved downstream of the 
impounding works 
Not In Place
Provide flows to move sediment downstream. 
Not In Place
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Maintain sediment management regime to avoid degradation of the natural habitat characteristics 
of the downstream river. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L1
Waterbody Category and Map Code.: 
GB31041050
Waterbody ID and Name: 
SN 66175 06225
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Upper Lliw Reservoir
Lake - L2
Waterbody Category and Map Code.: 
GB31039020
Waterbody ID and Name: 
SN 80010 49612
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
High 
High
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Total Phosphorus 
Good 
Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llyn Brianne Reservoir 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L3
Waterbody Category and Map Code.: 
GB31041145
Waterbody ID and Name: 
SN 51109 04619
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Upper Lliedi Reservoir 
GB31041177
Waterbody ID and Name: 
SN 65094 03568
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Good Ecological Potential by 2015 Drinking Water Protected Area No
SSSI (Non-N2K) related: 
Heavily Modified
Water Storage - non-specific

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Iron 
High 
High
Phenol 
High 
High
Zinc 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Lake - L5
Waterbody Category and Map Code.: 
GB31041203
Waterbody ID and Name: 
SN 51946 03574
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Provide flows to move sediment downstream. 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cwm Llied Reservoir

B.9  Ogmore to Tawe river catchment 
 
Rivers and lakes 
 
There are 71 river water bodies (of which 7 are designated as heavily modified) and 5 lake water bodies (of which 2 are designated as heavily modified) within the Ogmore to Tawe river catchment. 

 

## 

Water body category 
Good or high now 
Good or high in 2015 
Good or high in 2021 
Good or high in 2027 
Less than good in 2015 
Total number of water bodies 
Natural 
Rivers 
25 
34 
34 
64 
30 
64 
Lakes 
0 
0 
0 
1 
1 
1 
Artificial/Heavily modified water bodies 
HMWB 
1 
1 
1 
9 
8 
9 
AWB 
0 
0 
0 
2 
2 
2 

 

## 

 
 
Water body tables for rivers and lakes in the Ogmore to Tawe catchment  
 
This section contains detailed information on the current status and objectives for river and lake water bodies in the catchment. The tables are arranged by water body type (in the order rivers then lakes) and by map code number within these groupings. Note: In the following water body tables, only the relevant elements of the status objectives (shown under the orange sub headings) are shown. 

River - R1
Waterbody Category and Map Code.: 
GB110058032320
Waterbody ID and Name: 
SN 92067 05531
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032330
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2l, B2r)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Sychryd - headwaters to confluence with Mellte
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R2
Waterbody Category and Map Code.: 
GB110058032330
Waterbody ID and Name: 
SN 90548 07719
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032430
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mellte - conf with Sychryd to conf with R. Neath
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R3
Waterbody Category and Map Code.: 
GB110058032340
Waterbody ID and Name: 
SN 89996 08276
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032430
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nedd Fechan - Pyrddin conf to River Neath conf
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R4
Waterbody Category and Map Code.: 
GB110058032360
Waterbody ID and Name: 
SN 79254 05831
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032430
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2l, B2r, S2e)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Dulais - headwaters to confluence with River Neath
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R5
Waterbody Category and Map Code.: 
GB110058032370
Waterbody ID and Name: 
SN 87992 09663
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032340
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Pyrddin - headwaters to conf with Nedd Fechan
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R6
Waterbody Category and Map Code.: 
GB110058032380
Waterbody ID and Name: 
SN 92598 12019
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032350
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Invertebrates 
Moderate (Quite Certain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Dimethoate 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Mellte - Llia and Dringarth conf to Hepste conf
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Chlorfenvinphos 
High 
High
River - R7
Waterbody Category and Map Code.: 
GB110058032390
Waterbody ID and Name: 
SN 96683 13033
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032350
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Hepste - headwaters to confluence with Mellte
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R8
Waterbody Category and Map Code.: 
GB110058032400
Waterbody ID and Name: 
SN 91072 14369
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032340
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nedd Fechan - conf with Senni to conf with Pyrddin
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R9
Waterbody Category and Map Code.: 
GB110058032430
Waterbody ID and Name: 
SN 79825 00470
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541005800700
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Neath - conf with Nedd Fechan and Mellte to TL
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
High 
High
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Tributyltin Compounds 
High 
High
Trichlorobenzenes 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
Carbon Tetrachloride 
High 
High
para - para DDT 
High 
High
Tetrachloroethylene 
High 
High
Trichloroethylene 
High 
High
River - R10
Waterbody Category and Map Code.: 
GB110058026260
Waterbody ID and Name: 
SS 90371 84083
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026280
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ogmore - conf with Garw to confluence with Llynfi
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R11
Waterbody Category and Map Code.: 
GB110058026270
Waterbody ID and Name: 
SS 99727 82963
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026250
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ewenny Fach - headwaters to confluence with 
Ewenny 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R12
Waterbody Category and Map Code.: 
GB110058026280
Waterbody ID and Name: 
SS 90312 80323
National Grid Reference: 
Fail
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Freshwater Fish Directive, Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541005815300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Macrophytes 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Ogmore - confluence with Llynfi to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Uncertain)
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Fluoranthene 
High 
High
Hexachlorobenzene 
High 
High
Hexachlorobutadiene 
High 
High
Hexachlorocyclohexane 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Trichlorobenzenes 
High 
High
Trichloromethane 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
Carbon Tetrachloride 
High 
High
para - para DDT 
High 
High
Tetrachloroethylene 
High 
High
Trichloroethylene 
High 
High
River - R13
Waterbody Category and Map Code.: 
GB110058026300
Waterbody ID and Name: 
SS 92666 86064
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026260
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ogmore - Ogwr Fach and Ogwr Fawr conf to Garw 
conf 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R14
Waterbody Category and Map Code.: 
GB110058026310
Waterbody ID and Name: 
SS 97695 88739
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Phytobenthos 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Ogwr Fach - headwaters to confluence with 
Ogmore 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R15
Waterbody Category and Map Code.: 
GB110058026320
Waterbody ID and Name: 
SS 90558 89506
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB110058026260
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Not Required (MS) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a, M3b)
 
Surveillance site:  No
Garw - headwaters to confluence with Ogmore
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Appropriate channel maintenance strategies and techniques - woody debris
Not In Place
Appropriate channel maintenance strategies and techniques - minimise disturbance to channel 
bed and margins 
Not In Place
Sediment management strategies (develop and revise)
Not In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Improve floodplain connectivity 
Not In Place
Set-back embankments 
Not In Place
Flood bunds (earth banks, in place of floodwalls)
Not In Place
Increase in-channel morphological diversity 
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Remove obsolete structure 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R16
Waterbody Category and Map Code.: 
GB110058026340
Waterbody ID and Name: 
SS 93324 90948
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Ogwr Fawr - headwaters to confluence with 
Ogmore 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R17
Waterbody Category and Map Code.: 
GB110058026350
Waterbody ID and Name: 
SS 75042 94765
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Freshwater Fish Directive, Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541005800700
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Arsenic 
High 
High
Copper 
Moderate (Very Certain)
High
Iron 
High 
High
Supporting conditions 
Element 
Current status (and 
certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Cadmium And Its 
Compounds 
High 
High
Lead And Its Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Surveillance site:  No
Baglan Brook - headwaters to conf with River 
Neath 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R18
Waterbody Category and Map Code.: 
GB110058026360
Waterbody ID and Name: 
SS 75675 95839
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541005800700
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Crythan Brook - headwaters to conf with Neath
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R19
Waterbody Category and Map Code.: 
GB110058026380
Waterbody ID and Name: 
SN 84157 02400
National Grid Reference: 
Poor
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032430
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Clydach Brook - HW to conf with River Neath
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R20
Waterbody Category and Map Code.: 
GB110058026390
Waterbody ID and Name: 
SN 74546 01982
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541005800700
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(M5a) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Clydach - headwaters to conf with River Neath
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R21
Waterbody Category and Map Code.: 
GB110058026400
Waterbody ID and Name: 
ST 07599 68859
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058020980
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Very Certain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Waycock - headwaters to confluence with Kenson
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R22
Waterbody Category and Map Code.: 
GB110058026420
Waterbody ID and Name: 
ST 15734 71221
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Natural conditions
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008660000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Natural conditions (B3a)
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Toluene 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Quite Certain) 
Does not Support 
Good 
Disproportionately expensive 
(HR4a) 
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Cadoxton - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Cadmium And Its 
Compounds 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
River - R23
Waterbody Category and Map Code.: 
GB110058026430
Waterbody ID and Name: 
SS 99930 75070
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058020980
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
High 
High
Cypermethrin 
High 
High
Diazinon 
High 
High
Dimethoate 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Thaw - headwaters to confluence with Kenson
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Chlorfenvinphos 
High 
High
River - R24
Waterbody Category and Map Code.: 
GB110058026450
Waterbody ID and Name: 
SS 79552 83133
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005800500
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Poor (Quite Certain)
Moderate
Disproportionately expensive 
(B1a) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Does not Support 
Good 
Disproportionately expensive 
(HR2a) 
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Kenfig - conf with Margam Moors to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R25
Waterbody Category and Map Code.: 
GB110059032170
Waterbody ID and Name: 
SN 78533 09360
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032180
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Tawe - conf with Giedd to confluence with Twrch
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R26
Waterbody Category and Map Code.: 
GB110059032180
Waterbody ID and Name: 
SN 72189 03491
National Grid Reference: 
Fail
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Urban Waste Water Treatment Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541005900900
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
2,4-dichlorophenoxyacetic 
acid 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Cyanide 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Surveillance site:  Yes
Tawe -confluence with Twrch to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Supporting Conditions

Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Element 
Current status (and 
certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Quite Certain)
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Benzene 
High 
High
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
Moderate (Quite Certain)
Moderate
Technically infeasible (C2a)
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
High 
High
Dichloromethane 
High 
High
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Nonylphenol 
High 
High
Octylphenol 
High 
High
Tributyltin Compounds 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Trichloromethane 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
Trichloroethylene 
High 
High
River - R27
Waterbody Category and Map Code.: 
GB110059032190
Waterbody ID and Name: 
SN 70812 06245
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032180
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Upper Clydach - headwaters to confluence with 
Tawe 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R28
Waterbody Category and Map Code.: 
GB110059032200
Waterbody ID and Name: 
SN 68334 06007
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032180
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Lower Clydach - headwaters to confluence with 
Tawe 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R29
Waterbody Category and Map Code.: 
GB110059032210
Waterbody ID and Name: 
SN 76814 10059
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB110059032180
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Cypermethrin 
Moderate (Uncertain)
High
Diazinon 
High 
High
Dimethoate 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  No
Twrch - conf with Nant Gwys to conf with Tawe
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a, M3b)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Appropriate channel maintenance strategies and techniques - woody debris
Not In Place
Appropriate channel maintenance strategies and techniques - minimise disturbance to channel 
bed and margins 
Not In Place
Sediment management strategies (develop and revise)
Not In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Improve floodplain connectivity 
Not In Place
Set-back embankments 
Not In Place
Flood bunds (earth banks, in place of floodwalls)
Not In Place
Increase in-channel morphological diversity 
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Remove obsolete structure 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Chlorfenvinphos 
High 
High
River - R30
Waterbody Category and Map Code.: 
GB110059032220
Waterbody ID and Name: 
SN 75476 11353
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB110059032210
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
 
Surveillance site:  No
Twrch - conf with Llynfell to confluence with Gwys
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Sediment management strategies (develop and revise)
Not In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Improve floodplain connectivity 
Not In Place
Set-back embankments 
Not In Place
Flood bunds (earth banks, in place of floodwalls)
Not In Place
Increase in-channel morphological diversity 
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R31
Waterbody Category and Map Code.: 
GB110059025690
Waterbody ID and Name: 
SS 66079 95871
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Shellfish Water Directive, Urban Waste Water 
Treatment Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB541005900900
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Alteration of channel bed (within culvert) 
Not In Place
Re-opening existing culverts
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Tawe - conf with Nant Cwmgelli to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R32
Waterbody Category and Map Code.: 
GB110059025700
Waterbody ID and Name: 
SS 69739 94785
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008260000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Crymlyn Brook - HW to conf with Tennant Canal
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R33
Waterbody Category and Map Code.: 
GB110059025710
Waterbody ID and Name: 
SS 68291 97864
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Freshwater Fish Directive, Shellfish Water Directive, Urban Waste Water 
Treatment Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB541005900900
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Macrophytes 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(DO1a) 
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
Moderate (Uncertain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Surveillance site:  Yes
Nant y Fendrod - headwaters to conf with Tawe
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Ecological Potential Assessment

Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a, M3b)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Appropriate channel maintenance strategies and techniques - woody debris
Not In Place
Appropriate channel maintenance strategies and techniques - minimise disturbance to channel 
bed and margins 
Not In Place
Sediment management strategies (develop and revise)
Not In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Improve floodplain connectivity 
Not In Place
Set-back embankments 
Not In Place
Flood bunds (earth banks, in place of floodwalls)
Not In Place
Increase in-channel morphological diversity 
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Fail (Very Certain)
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Benzo (a) and (k) 
fluoranthene 
High 
High
Benzo (ghi) perelyene and 
indeno (123-cd) pyrene 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Benzo(a)pyrene 
High 
High
Cadmium And Its 
Compounds 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Fluoranthene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
para - para DDT 
High 
High
River - R34
Waterbody Category and Map Code.: 
GB110058026100
Waterbody ID and Name: 
SS 77734 89669
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541005800600
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(M5a) 
Invertebrates 
High 
High
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Ffrwd Wyllt - headwaters to tidal limit 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R35
Waterbody Category and Map Code.: 
GB110058026110
Waterbody ID and Name: 
SS 77938 91780
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB541005800600
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Moderate (Uncertain)
Moderate
Not Required (MS) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a, M3b)
Surveillance site:  No
Afan - confluence with Pelenna to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
In Place
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Appropriate channel maintenance strategies and techniques - woody debris
Not In Place
Appropriate channel maintenance strategies and techniques - minimise disturbance to channel 
bed and margins 
Not In Place
Sediment management strategies (develop and revise)
Not In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Improve floodplain connectivity 
Not In Place
Set-back embankments 
Not In Place
Flood bunds (earth banks, in place of floodwalls)
Not In Place
Increase in-channel morphological diversity 
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Remove obsolete structure 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R36
Waterbody Category and Map Code.: 
GB110058026120
Waterbody ID and Name: 
SS 88718 96826
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026130
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Afan - headwaters to confluence with Corrwg
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R37
Waterbody Category and Map Code.: 
GB110058026130
Waterbody ID and Name: 
SS 82712 95470
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026110
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Uncertain)
Moderate
Disproportionately expensive (B1a), Technically infeasible (B2j)
Invertebrates 
High 
High
Phytobenthos 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Afan - conf with Corrwg to confluence with Pelenna
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R38
Waterbody Category and Map Code.: 
GB110058026140
Waterbody ID and Name: 
SS 81591 97574
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026110
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Disproportionately expensive (M5a), Technically infeasible 
(B2a) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Pelenna - headwaters to confluence with Afan
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R39
Waterbody Category and Map Code.: 
GB110058026170
Waterbody ID and Name: 
SS 83589 86169
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026160
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Kenfig - headwaters to conf with Nant Cwm Philip
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R40
Waterbody Category and Map Code.: 
GB110058026190
Waterbody ID and Name: 
SS 80275 85949
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026160
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Poor
Technically infeasible (B2a)
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Quite Certain) 
Does not Support 
Good 
Disproportionately expensive 
(HR4a) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Cwm Philip - headwaters to conf with Kenfig
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R41
Waterbody Category and Map Code.: 
GB110058026200
Waterbody ID and Name: 
SS 89849 72289
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590001
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Cwm-mawr - headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R42
Waterbody Category and Map Code.: 
GB110058026220
Waterbody ID and Name: 
SS 90862 75732
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Freshwater Fish Directive, Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026240
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Alun - headwaters to confluence with Ewenny
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R43
Waterbody Category and Map Code.: 
GB110058026240
Waterbody ID and Name: 
SS 89397 77259
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB541005815300
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ewenny - confluence with Alun to tidal limit
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R44
Waterbody Category and Map Code.: 
GB110058026250
Waterbody ID and Name: 
SS 91128 77850
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026240
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macrophytes 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Ewenny - conf with Ewenny Fach to conf with Alun
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Trichloromethane 
High 
High
Carbon Tetrachloride 
High 
High
Tetrachloroethylene 
High 
High
Trichloroethylene 
High 
High
River - R45
Waterbody Category and Map Code.: 
GB110058020940
Waterbody ID and Name: 
SS 91762 68791
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008660000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Marcross Brook - headwaters to tidal limit
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R46
Waterbody Category and Map Code.: 
GB110058020950
Waterbody ID and Name: 
SS 93477 68421
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008660000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llys Weirydd - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R47
Waterbody Category and Map Code.: 
GB110058020960
Waterbody ID and Name: 
SS 90622 70096
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590001
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nash Brook - headwaters to tidal limit 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R48
Waterbody Category and Map Code.: 
GB110058020980
Waterbody ID and Name: 
ST 03036 67512
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB531005806800
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Thaw - confluence with Kenson to tidal limit
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R49
Waterbody Category and Map Code.: 
GB110058021000
Waterbody ID and Name: 
ST 04039 68311
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058020980
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Quite Certain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Does not Support 
Good 
Disproportionately expensive 
(HR2a) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Kenson - conf with Waycock to conf with Thaw
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R50
Waterbody Category and Map Code.: 
GB110058021010
Waterbody ID and Name: 
SS 94767 67793
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008660000
Downstream Waterbody ID:

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Thaw/Cadoxton
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R51
Waterbody Category and Map Code.: 
GB110058021020
Waterbody ID and Name: 
SS 98590 68720
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008660000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
COLHUW
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R52
Waterbody Category and Map Code.: 
GB110059032240
Waterbody ID and Name: 
SN 80798 12356
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032170
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Tawe - conf with Nant Llech to conf with Giedd
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R53
Waterbody Category and Map Code.: 
GB110059032250
Waterbody ID and Name: 
SN 84741 11925
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032240
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant Llech - headwaters to confluence with Tawe
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R54
Waterbody Category and Map Code.: 
GB110059032260
Waterbody ID and Name: 
SN 74792 12512
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032220
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Llynfell - headwaters to confluence with Twrch
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R55
Waterbody Category and Map Code.: 
GB110059032270
Waterbody ID and Name: 
SN 78754 14095
National Grid Reference: 
Bad
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032210
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Bad (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Bad (Very Certain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Gwys - headwaters to confluence with Twrch
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R56
Waterbody Category and Map Code.: 
GB110059032280
Waterbody ID and Name: 
SN 80520 16072
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032170
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
Moderate (Very Certain)
High
Zinc 
Moderate (Very Certain)
Moderate
Technically infeasible (C2a)
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Giedd - headwaters to confluence to Tawe
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R57
Waterbody Category and Map Code.: 
GB110059032290
Waterbody ID and Name: 
SN 77842 17515
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032220
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Twrch - headwaters to confluence with Llynfell
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R58
Waterbody Category and Map Code.: 
GB110059032300
Waterbody ID and Name: 
SN 85207 20793
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110059032240
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Tawe - headwater to confluence with Nant Llech
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R59
Waterbody Category and Map Code.: 
GB110058026160
Waterbody ID and Name: 
SS 79996 82947
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026450
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Poor (Quite Certain)
Poor
Disproportionately expensive 
(B1a) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Does not Support 
Good 
Disproportionately expensive 
(HR2a) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Kenfig - Nant Cwm Philip conf to Margam Moors 
conf 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R60
Waterbody Category and Map Code.: 
GB110058020990
Waterbody ID and Name: 
ST 09004 67052
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008660000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Barry Brook - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R61
Waterbody Category and Map Code.: 
GB110058026370
Waterbody ID and Name: 
SS 75629 96915
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Urbanisation
Reason for Designation: 
GB541005800700
Downstream Waterbody ID:

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3a, M3b)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Educate landowners on sensitive management practices (urbanisation)
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Structures or other mechanisms in place and managed to enable fish to access waters upstream 
and downstream of the impounding works. 
Not In Place
Remove obsolete structure 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Surveillance site:  No
Nant Cae'r-bryn - headwaters to conf with Neath
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Cadmium And Its 
Compounds 
High 
High
Hexachlorobenzene 
High 
High
Hexachlorobutadiene 
High 
High
Hexachlorocyclohexane 
High 
High
Mercury And Its 
Compounds 
High 
High
Trichlorobenzenes 
High 
High
Trichloromethane 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
Carbon Tetrachloride 
High 
High
para - para DDT 
High 
High
Tetrachloroethylene 
High 
High
Trichloroethylene 
High 
High
River - R62
Waterbody Category and Map Code.: 
GB110058026210
Waterbody ID and Name: 
SS 89158 73093
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Shellfish Water Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB611008590001
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Nant y Dunol - headwaters to tidal limit 
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R63
Waterbody Category and Map Code.: 
GB110058032410
Waterbody ID and Name: 
SN 92685 16542
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032380
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Llia - headwaters to confluence with Mellte
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R64
Waterbody Category and Map Code.: 
GB110058026180
Waterbody ID and Name: 
SS 78903 84089
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026450
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Does not Support Good 
(Uncertain) 
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Margam Moors - headwaters to conf with Kenfig
(For Protected Area Objectives see Annex D)
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R65
Waterbody Category and Map Code.: 
GB110058032420
Waterbody ID and Name: 
SN 94269 15746
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032380
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Dringarth -headwaters to confluence with Mellte
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R66
Waterbody Category and Map Code.: 
GB110058026290
Waterbody ID and Name: 
SS 94691 83653
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026250
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
Good 
Good
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(P1a) 
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Ewenny - headwaters to conf with the Ewenny 
Fach 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R67
Waterbody Category and Map Code.: 
GB110058026150
Waterbody ID and Name: 
SS 88357 99542
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026130
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Quite Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Quite Certain)
Moderate
Disproportionately expensive (M5a), Technically infeasible (B2j)
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Iron 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  No
Corrwg - headwaters to confluence with Afan
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
River - R68
Waterbody Category and Map Code.: 
GB110058032350
Waterbody ID and Name: 
SN 92072 08672
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058032330
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Mellte - conf with Hepste to confluence to Sychryd
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R69
Waterbody Category and Map Code.: 
GB110058026331
Waterbody ID and Name: 
SS 85245 93336
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026332
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
High 
High
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Llynfi - headwaters to Lletty Brongu STW
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
River - R70
Waterbody Category and Map Code.: 
GB110058026332
Waterbody ID and Name: 
SS 86369 88039
National Grid Reference: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB110058026280
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Poor (Very Certain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Poor (Very Certain)
Moderate
Technically infeasible (B2k, B2l, 
B2r) 
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Surveillance site:  Yes
Llynfi - Lletty Brongu STW to conf with Ogmore
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Lead And Its Compounds 
High 
High
GB110058026410
ST 05192 70057 Good Good by 2015
Good Ecological Status by 2015 Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
Good 
Good
pH 
High 
High
Phosphate 
Good 
Good
Temperature 
High 
High
Copper 
High 
High
Zinc 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L1
Waterbody Category and Map Code.: 
GB31040457
Waterbody ID and Name: 
SN 94690 17798
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Water Storage - non-specific
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Ystradfellte Reservoir
Lake - L2
Waterbody Category and Map Code.: 
GB31040990
Waterbody ID and Name: 
SN 93839 07159
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Artificial
Hydromorphological Designation: 
Drinking Water
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Penderyn Reservoir
GB31041219
SN 91709 03479
National Grid Reference: 
Moderate Good by 2027
Good Ecological Potential by 2027
Disproportionately expensive, Technically infeasible 
Drinking Water Protected Area No
SSSI (Non-N2K) related: 
Heavily Modified
Water Storage - non-specific
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3d)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Ensure there is an appropriate baseline flow regime downstream of the impoundment.
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Lake - L4
Waterbody Category and Map Code.: 
GB31042079
Waterbody ID and Name: 
SS 79474 84823
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Artificial
Hydromorphological Designation: 
Other, Recreation, Wider Environment
Reason for Designation: 

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting elements Element 
Current status (and certainty of less than 
good) 
Copper 
High 
High
Zinc 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Disproportionately expensive (M2c, M2d), Technically infeasible 
(M3h) 
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Eglwys Nunydd Reservoir 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB31042170
SS 79679 81494
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Good Ecological Status by 2027 Technically infeasible Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain - WoE)
Biological elements Element 
Current status (and certainty of less than 
good) 
Chironom Invertebrates 
Moderate (Uncertain)
Moderate
Technically infeasible (B2a)
littoral Invertebrates 
High 
High
Macrophytes 
Good 
Good
Phytobenthos 
Good 
Good
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Acid Neutralising Capacity 
High 
High
Ammonia (Phys-Chem) 
High 
High
Dissolved Oxygen 
High 
High
Total Phosphorus 
High 
High
Ammonia (Annex 8) 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Quantity and Dynamics of 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment

B.10 Groundwater 
 
Groundwater bodies in the Western Wales River Basin District 
 
There are 25 groundwater bodies in the Western Wales River Basin District. 

 
Water body tables for groundwater in the Western Wales River Basin District  
 
This section contains detailed information on the current status and objectives for groundwater bodies in the river basin district. The tables are arranged by map code number. 

 
Note: In the following water body tables, only the relevant elements of the status objectives (shown under the orange sub headings) are shown.   

Groundwater - G1
Waterbody Category and Map Code.: 
Ynys Mon Eastern Carboniferous Limestone
GB41002G206200
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.300
 0.300
75% of relevant TV
No
No
No 
Phosphate 
 93.500 ug/l 
 93.500
 93.500
75% of relevant TV
No
No
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G2
Waterbody Category and Map Code.: 
GB41002G201200
Swansea Devonian Old Red Sandstone 
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test
Threshold value (TV), trends and other relevant information (for groundwater only)
Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G3
Waterbody Category and Map Code.: 
Ynys Mon Minor
GB41002G204400
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Poor (High)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Poor (High) 
Poor
Disproportionately expensive 
(GC4b) 
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Hazardous Substances and other pollutants 
Mines
General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test, Saline Intrusion 
Test 
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.000
 0.105
75% of relevant TV
No
No
No 
Phosphate 
 87.182 ug/l 
75% of relevant TV
No
No
No 
Chromium (Total) 
 10.898 ug/l 
 0.000
 1.765
75% of relevant TV
No
Yes
No 
Copper (Total) 
 21.796 ug/l 
 0.000
 4.295
75% of relevant TV
No
No
No 
Zinc (Total) 
 163.466 ug/l 
 0.000
 65.630
75% of relevant TV
No
No
No 
Nickel (Total) 
 15.000 ug/l 
 0.000
 1.310
75% of relevant TV
No
Yes
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Sodium 
 112.500 mg/l 
75% of relevant TV
No
No
No 
Electrical 
conductivity 
 1875.000 uS/cm 
75% of relevant TV
No
No
No 
Aluminium 
 150.000 ug/l 
75% of relevant TV
No
Yes
No 
Lead (Total) 
 15.693 ug/l 
75% of relevant TV
No
Yes
No 
Cadmium (Total) 
 0.436 ug/l 
75% of relevant TV
No
Yes
No 
Groundwater - G4
Waterbody Category and Map Code.: 
Meirionydd
GB41002G203200
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Poor (High)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Poor (High) 
Poor
Disproportionately expensive 
(GC4b) 
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Hazardous Substances and other pollutants 
Mines
General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test, Saline Intrusion 
Test 
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Chromium (Total) 
 9.374 ug/l 
 0.000
 0   
75% of relevant TV
No
Yes
No 
Ammonia 
 0.300 mg/l 
 0.000
 0   
75% of relevant TV
No
No
No 
Phosphate 
 74.995 ug/l 
75% of relevant TV
No
No
No 
Copper (Total) 
 18.749 ug/l 
 0.000
 0   
75% of relevant TV
No
No
No 
Zinc (Total) 
 140.615 ug/l 
 0.000
 0   
75% of relevant TV
No
No
No 
Nickel (Total) 
 15.000 ug/l 
 0.000
 0   
75% of relevant TV
No
Yes
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Lead (Total) 
 13.499 ug/l 
75% of relevant TV
No
Yes
No 
Cadmium (Total) 
 0.375 ug/l 
75% of relevant TV
No
Yes
No 
Aluminium 
 150.000 ug/l 
75% of relevant TV
No
Yes
No 
Electrical 
conductivity 
 1875.000 uS/cm 
75% of relevant TV
No
No
No 
Sodium 
 112.500 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G5
Waterbody Category and Map Code.: 
Swansea Southern Carboniferous Limestone
GB41001G201300
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Yes
Groundwater body has an upward 
trend in pollutant concentrations:  
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (Low) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Poor (High)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Poor (High) 
Poor
Technically infeasible (GC1a)
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test
Abstraction and other artificial flow pressures Saline Intrusion 
General Chemical Test, Saline Intrusion 
Test, DrWPA Test 

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.300
 0.300
75% of relevant TV
No
No
No 
Phosphate 
 93.500 ug/l 
 93.500
 93.500
75% of relevant TV
Yes
No
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
Yes
No
No 
Electrical 
conductivity 
 1875.000 uS/cm 
75% of relevant TV
No
No
No 
Groundwater - G6
Waterbody Category and Map Code.: 
Llyn & Eryri
GB41002G204600
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (High) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test
DrWPA
DrWPA Test
Hazardous Substances and other pollutants, Nutrients, Abstraction and other artificial flow 
pressures 

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.000
 0.105
75% of relevant TV
No
No
No 
Phosphate 
 91.324 ug/l 
75% of relevant TV
No
No
No 
Atrazine 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G7
Waterbody Category and Map Code.: 
GB41001G204000
Gower Carboniferous Limestone 
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (High) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (High) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients 
Nitrate
General Chemical Test, GWDTE Test, 
DrWPA Test 
DrWPA
DrWPA Test
Hazardous Substances and other pollutants, Nutrients, Abstraction and other artificial flow 
pressures 

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.000
 0.300
75% of relevant TV
No
No
No 
Lead (Total) 
 13.201 ug/l 
75% of relevant TV
Yes
Yes
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
Yes
No
No 
Aluminium 
 150.000 ug/l 
75% of relevant TV
No
Yes
No 
Groundwater - G8
Waterbody Category and Map Code.: 
Swansea Northern Carboniferous Limestone
GB41001G201100
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.300
 0.300
75% of relevant TV
No
No
No 
Phosphate 
 110.587 ug/l 
 93.500
 93.500
75% of relevant TV
No
No
No 
Aluminium 
 150.000 ug/l 
75% of relevant TV
No
Yes
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G9
Waterbody Category and Map Code.: 
GB41002G203300
Teifi and Coastal Ceredigion 
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (High) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Poor (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Poor (Low) 
Poor
Disproportionately expensive 
(GC4b) 
Saline Intrusion 
Good (High) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients 
Nitrate
General Chemical Test, GWDTE Test, 
DrWPA Test 
Hazardous Substances and other pollutants 
Mines
General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test, Saline Intrusion 
Test 
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.110
 0.193
75% of relevant TV
No
No
No 
Phosphate 
 78.740 ug/l 
75% of relevant TV
No
No
No 
Chromium (Total) 
 9.843 ug/l 
 1.770
 1.850
75% of relevant TV
Yes
Yes
No 
Copper (Total) 
 19.685 ug/l 
 4.300
 24.440
75% of relevant TV
No
No
No 
Zinc (Total) 
 147.638 ug/l 
 65.630
 89.387
75% of relevant TV
Yes
No
No 
Nickel (Total) 
 15.000 ug/l 
 1.310
 9.361
75% of relevant TV
No
Yes
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Lead (Total) 
 14.173 ug/l 
75% of relevant TV
Yes
Yes
No 
Cadmium 
(Dissolved) 
 0.411 ug/l 
75% of relevant TV
No
Yes
No 
Cadmium (Total) 
 0.394 ug/l 
75% of relevant TV
No
Yes
No 
Electrical 
conductivity 
 1875.000 uS/cm 
75% of relevant TV
No
No
No 
Aluminium 
 150.000 ug/l 
75% of relevant TV
No
Yes
No 
Sodium 
 112.500 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G10
Waterbody Category and Map Code.: 
Swansea Jurassic Lias
GB41002G200900
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.000
 0.300
75% of relevant TV
No
No
No 
Phosphate 
 93.500 ug/l 
 93.500
 93.500
75% of relevant TV
No
No
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G11
Waterbody Category and Map Code.: 
GB41002G206000
Pembrokeshire Carboniferous Limestone 
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test
Threshold value (TV), trends and other relevant information (for groundwater only)
Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G12
Waterbody Category and Map Code.: 
Ramsey Island
GB41002G082100
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Groundwater - G13
Waterbody Category and Map Code.: 
GB41002G205000
North Ceredigion Rheidol Area 
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Poor (High)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Poor (Low) 
Poor
Disproportionately expensive 
(GC4b) 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Poor (High) 
Poor
Disproportionately expensive 
(GC4b) 
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Hazardous Substances and other pollutants 
Mines
General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test, Saline Intrusion 
Test 

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Copper (Total) 
 18.372 ug/l 
 4.300
 4.295
75% of relevant TV
Yes
No
No 
Chromium (Total) 
 9.186 ug/l 
 1.770
 1.765
75% of relevant TV
Yes
Yes
No 
Zinc (Total) 
 137.788 ug/l 
 65.630
 65.630
75% of relevant TV
Yes
No
No 
Nickel (Total) 
 15.000 ug/l 
 1.310
 1.310
75% of relevant TV
Yes
Yes
No 
Lead (Total) 
 13.228 ug/l 
75% of relevant TV
Yes
Yes
No 
Cadmium 
(Dissolved) 
 0.367 ug/l 
75% of relevant TV
No
Yes
No 
Cadmium (Total) 
 0.367 ug/l 
75% of relevant TV
Yes
Yes
No 
Electrical 
conductivity 
 1875.000 uS/cm 
75% of relevant TV
No
No
No 
Sodium 
 112.500 mg/l 
75% of relevant TV
No
No
No 
Aluminium 
 150.000 ug/l 
75% of relevant TV
No
Yes
No 
Groundwater - G14
Waterbody Category and Map Code.: 
GB41002G201000
Swansea Carboniferous Coal Measures 
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (High) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Poor (High)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Poor (High) 
Poor
Disproportionately expensive 
(GC5a) 
Saline Intrusion 
Good (High) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Hazardous Substances and other pollutants 
Mines
General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test, Saline Intrusion 
Test 
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.000
 0.010
75% of relevant TV
No
No
No 
Phosphate 
 83.000 ug/l 
 83.000
 83.000
75% of relevant TV
No
No
No 
Chromium (Total) 
 8.913 ug/l 
 0.000
 2.900
75% of relevant TV
No
Yes
No 
Copper (Total) 
 17.825 ug/l 
 0.000
 4.000
75% of relevant TV
Yes
No
No 
Zinc (Total) 
 133.690 ug/l 
 0.000
 148.000
75% of relevant TV
No
No
No 
Nickel (Total) 
 15.000 ug/l 
 0.000
 36.000
75% of relevant TV
No
Yes
No 
Nitrate 
 42.000 mg/l 
 8.000
 8.000
75% of relevant TV
No
No
No 
Lead (Total) 
 12.834 ug/l 
75% of relevant TV
No
Yes
No 
Cadmium (Total) 
 0.356 ug/l 
75% of relevant TV
No
Yes
No 
Sulphate 
 36.000 mg/l 
 36.000
 36.000
75% of relevant TV
No
No
No 
Electrical 
conductivity 
 1875.000 uS/cm 
 520.000
 520.000
75% of relevant TV
No
No
No 
Aluminium 
 150.000 ug/l 
 61.000
 61.000
75% of relevant TV
No
Yes
No 
Sodium 
 112.500 mg/l 
 31.000
 31.000
75% of relevant TV
No
No
No 
Chloride 
 53.000 mg/l 
 53.000
 53.000
75% of relevant TV
No
No
No 
Groundwater - G15
Waterbody Category and Map Code.: 
GB41002G200400
Cleddau and Pembrokeshire 
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (High) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (High) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.000
 0.300
75% of relevant TV
No
No
No 
Phosphate 
 93.500 ug/l 
 93.500
 93.500
75% of relevant TV
No
No
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
Yes
No
No 
Groundwater - G16
Waterbody Category and Map Code.: 
Ynys Mon Central Carboniferous Limestone
GB41001G204200
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.110
 0.300
75% of relevant TV
No
No
No 
Phosphate 
 93.500 ug/l 
 93.500
 93.500
75% of relevant TV
Yes
No
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G17
Waterbody Category and Map Code.: 
GB41002G201400
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Poor (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Poor (Low) 
Poor
Disproportionately expensive 
(GQ1b) 
Saline Intrusion 
Good (High) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (High) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Threshold value (TV), trends and other relevant information (for groundwater only)
Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Nickel (Total) 
 15.000 ug/l 
 0.000
 10.000
75% of relevant TV
No
Yes
No 
Thaw & Cadoxtan Jurassic Lias 
Groundwater - G18
Waterbody Category and Map Code.: 
Clwyd Silurian
GB41002G200100
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Nitrates Directive 
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Groundwater - G19
Waterbody Category and Map Code.: 
Carmarthen Northern Carboniferous Limestone
GB41001G200700
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.300
 0.300
75% of relevant TV
No
No
No 
Phosphate 
 231.111 ug/l 
 93.500
 93.500
75% of relevant TV
No
No
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G20
Waterbody Category and Map Code.: 
Ynys Mon Southern Carboniferous Limestone
GB41002G206100
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Groundwater - G21
Waterbody Category and Map Code.: 
GB41002G203000
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Poor (High)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Poor (High) 
Poor
Disproportionately expensive 
(GC4b) 
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Hazardous Substances and other pollutants 
Mines
General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test, Saline Intrusion 
Test 
Conwy

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Chromium (Total) 
 13.335 ug/l 
 1.850
 1.850
75% of relevant TV
No
Yes
No 
Copper (Total) 
 26.671 ug/l 
 24.440
 24.440
75% of relevant TV
Yes
No
No 
Zinc (Total) 
 200.029 ug/l 
 89.390
 89.387
75% of relevant TV
No
No
No 
Nickel (Total) 
 15.000 ug/l 
 9.360
 9.361
75% of relevant TV
No
Yes
No 
Lead (Total) 
 18.750 ug/l 
75% of relevant TV
No
Yes
No 
Cadmium (Total) 
 0.533 ug/l 
75% of relevant TV
No
Yes
No 
Electrical 
conductivity 
 1875.000 uS/cm 
75% of relevant TV
No
No
No 
Aluminium 
 150.000 ug/l 
75% of relevant TV
No
Yes
No 
Sodium 
 112.500 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G22
Waterbody Category and Map Code.: 
GB41002G200600
Carmarthen Carboniferous Coal Measures 
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Poor (High)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Poor (High) 
Poor
Disproportionately expensive 
(GC5a) 
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Hazardous Substances and other pollutants 
Mines
General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test, Saline Intrusion 
Test 
Nutrients,Hazardous Substances and other 
pollutants 
GWDTE (chemical)
GWDTE Test

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.000
 0.300
75% of relevant TV
No
No
No 
Phosphate 
 100.687 ug/l 
75% of relevant TV
No
No
No 
Chromium (Total) 
 12.586 ug/l 
 0.000
 1.000
75% of relevant TV
No
Yes
No 
Copper (Total) 
 25.172 ug/l 
 0.000
 86.900
75% of relevant TV
Yes
No
No 
Zinc (Total) 
 188.788 ug/l 
 0.000
 94.500
75% of relevant TV
Yes
No
No 
Nickel (Total) 
 15.000 ug/l 
 0.000
 10.000
75% of relevant TV
No
Yes
No 
Lead (Total) 
 18.124 ug/l 
75% of relevant TV
No
Yes
No 
Cadmium (Total) 
 0.503 ug/l 
75% of relevant TV
No
Yes
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Electrical 
conductivity 
 1875.000 uS/cm 
75% of relevant TV
No
No
No 
Aluminium 
 150.000 ug/l 
75% of relevant TV
No
Yes
No 
Sodium 
 112.500 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G23
Waterbody Category and Map Code.: 
GB41002G200500
Waterbody ID and Name: 
Poor
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (High) 
Good
Water Balance 
Good (High) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Poor (High)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Poor (High) 
Poor
Disproportionately expensive 
(GC4b) 
Saline Intrusion 
Good (High) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Hazardous Substances and other pollutants 
Mines
General Chemical Test, GWDTE Test, DrWPA Test, GW-SW Test, Saline Intrusion 
Test 
Tywi, Taf and Gwendraeths 

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Chromium (Total) 
 8.763 ug/l 
 0.000
 3.655
75% of relevant TV
No
Yes
No 
Copper (Total) 
 17.527 ug/l 
 0.000
 24.440
75% of relevant TV
Yes
No
No 
Zinc (Total) 
 131.451 ug/l 
 0.000
 89.387
75% of relevant TV
Yes
No
No 
Nickel (Total) 
 15.000 ug/l 
 0.000
 10.000
75% of relevant TV
No
Yes
No 
Lead (Total) 
 12.619 ug/l 
75% of relevant TV
No
Yes
No 
Cadmium (Total) 
 0.350 ug/l 
75% of relevant TV
No
Yes
No 
Electrical 
conductivity 
 1875.000 uS/cm 
75% of relevant TV
No
No
No 
Aluminium 
 150.000 ug/l 
75% of relevant TV
No
Yes
No 
Sodium 
 112.500 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G24
Waterbody Category and Map Code.: 
GB41001G200300
Clwyd Carboniferous Limestone 
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Nitrates Directive 
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Water Balance 
Good (Low) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (Low) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (High) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (Low) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients 
Nitrate
General Chemical Test, GWDTE Test, 
DrWPA Test 
DrWPA
DrWPA Test
Hazardous Substances and other pollutants, Nutrients, Abstraction and other artificial flow 
pressures 

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.300
 0.300
75% of relevant TV
Yes
No
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
No
No
No 
Groundwater - G25
Waterbody Category and Map Code.: 
GB41001G202100
Clwyd Permo-Triassic Sandstone 
Waterbody ID and Name: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Quantitative Status by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Drinking Water Protected Area, Nitrates Directive 
Protected Area Designation: 
Groundwater body has an upward 
trend in pollutant concentrations:  
No 
Quantitative Status 
Current Status (and confidence in 
this assessment) 
Good (Low)
Quantitative elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (Low) 
Good
Saline Intrusion 
Good (High) 
Good
Water Balance 
Good (Low) 
Good
Chemical Status 
Current Status (and confidence 
in this assessment) 
Good (Low)
Chemical elements Element 
Current status (and 
confidence) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Drinking Water Protected 
Area 
Good (High) 
Good
General Chemical Test 
Good (Low) 
Good
Impact on Wetlands 
Good (Low) 
Good
Impact On Surface Waters 
Good (High) 
Good
Saline Intrusion 
Good (High) 
Good
Pressures and Risks Pressures 
Risk Category
Element against which assessed
Nutrients 
Nitrate
General Chemical Test, GWDTE Test, 
DrWPA Test 
Hazardous Substances and other pollutants 
Pesticides
General Chemical Test, GWDTE Test, 
DrWPA Test, GW-SW Test 
DrWPA
DrWPA Test
Hazardous Substances and other pollutants, Nutrients, Abstraction and other artificial flow 
pressures 

## Threshold Value (Tv), Trends And Other Relevant Information (For Groundwater Only)

Substance 
TV 
Units 
Min NBL
Max 
NBL 
Starting point for 
reversing the trend 
Exceedance Hazardous
Upward 
trend 
Ammonia 
 0.300 mg/l 
 0.000
 0.300
75% of relevant TV
Yes
No
No 
Chlorfenvinphos 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Fluoranthene 
 0.145 ug/l 
75% of relevant TV
No
Yes
No 
Simazine 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Atrazine 
 0.075 ug/l 
75% of relevant TV
Yes
Yes
No 
Isoproturon 
 0.075 ug/l 
75% of relevant TV
Yes
Yes
No 
Mecoprop 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Diuron 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Bentazone 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Lead (Total) 
 10.445 ug/l 
75% of relevant TV
No
Yes
No 
Cypermethrin 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Diazinon 
 0.015 ug/l 
75% of relevant TV
No
Yes
No 
Dalapon 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Cyanazine 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Glyphosate 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Chlortoluron 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Carbetamide 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Carbendazim 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Clopyralid 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Metazachlor 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Trifluralin 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Trietazine 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Terbutryn 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Propazine 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Dichlorprop 
 75.000 ug/l 
75% of relevant TV
No
Yes
No 
MCPA 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 
Nitrate 
 42.000 mg/l 
75% of relevant TV
Yes
No
No 
Propetamphos 
 0.075 ug/l 
75% of relevant TV
No
Yes
No 

B.11 Estuaries and Coastal Waters Estuarine and coastal water bodies in the Western Wales River Basin District  
 
There are 27 estuarine water bodies and 24 coastal water bodies in the Western Wales River Basin District. 

 
 
Water body tables for estuaries and coastal waters in the Western Wales River Basin District 
 
This section contains detailed information on the current status and objectives for all estuarine and coastal water bodies in the river basin district. The tables are arranged by map code number. Note: In the following water body tables, only the relevant elements of the status objectives (shown under the orange sub headings) are shown.   

Coastal - C1
Waterbody Category and Map Code.: 
GB681010450000
Waterbody ID and Name: 
SH 28086 80761
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Macroalgae 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Holyhead Strait
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Coastal - C2
Waterbody Category and Map Code.: 
GB641011650000
Waterbody ID and Name: 
SJ 05900 85049
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Coastal Protection
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Good 
Good
Dissolved Oxygen 
High 
High
Arsenic 
High 
High
Copper 
High 
High
Iron 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Surveillance site:  No
North Wales
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Cadmium And Its 
Compounds 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
GB611008590003
SM 84675 17327 Good
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Good 
Good
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Cadmium And Its 
Compounds 
High 
High
Hexachlorobenzene 
High 
High
Hexachlorobutadiene 
High 
High
Hexachlorocyclohexane 
High 
High
Mercury And Its 
Compounds 
High 
High
Pentachlorophenol 
High 
High
Trichlorobenzenes 
High 
High
Trichloromethane 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
Carbon Tetrachloride 
High 
High
para - para DDT 
High 
High
Tetrachloroethylene 
High 
High
Trichloroethylene 
High 
High
GB651009030000
SN 43369 62623 Good Good by 2015
Good Ecological Status by 2015
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macroalgae 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
High 
High
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB651009350000
SH 45491 30836 Good Good by 2015
Good Ecological Status by 2015 Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive) 
No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB641008660000
Waterbody ID and Name: 
ST 04246 61473
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015, Good Chemical Status by 2015 Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
High
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Copper 
High 
High
Toluene 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Cadmium And Its 
Compounds 
High 
High
Hexachlorobenzene 
High 
High
Hexachlorobutadiene 
High 
High
Hexachlorocyclohexane 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Pentachlorophenol 
High 
High
Trichlorobenzenes 
High 
High
Trichloromethane 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
Carbon Tetrachloride 
High 
High
para - para DDT 
High 
High
Tetrachloroethylene 
High 
High
Trichloroethylene 
High 
High
Waterbody Category and Map Code.: 
GB621010380000
Waterbody ID and Name: 
SH 27700 73170
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macroalgae 
High 
High
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Coastal - C8
Waterbody Category and Map Code.: 
GB641008220000
Waterbody ID and Name: 
SM 84169 05444
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macroalgae 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1o) 
Dissolved Oxygen 
High 
High
Copper 
High 
High
Iron 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Surveillance site:  Yes
Milford Haven Outer
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Nickel And Its Compounds 
High 
High
Coastal - C9
Waterbody Category and Map Code.: 
GB611008590001
Waterbody ID and Name: 
SS 63045 73473
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1o) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Surveillance site:  Yes
Bristol Channel Outer North 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Cadmium And Its 
Compounds 
High 
High
Hexachlorobenzene 
High 
High
Hexachlorobutadiene 
High 
High
Hexachlorocyclohexane 
High 
High
Mercury And Its 
Compounds 
High 
High
Pentachlorophenol 
High 
High
Trichlorobenzenes 
High 
High
Trichloromethane 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
Carbon Tetrachloride 
High 
High
DDT Total 
High 
High
para - para DDT 
High 
High
Tetrachloroethylene 
High 
High
Trichloroethylene 
High 
High
Coastal - C10
Waterbody Category and Map Code.: 
GB611008590002
Waterbody ID and Name: 
SS 26769 94070
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No Not Designated A/HMWB
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macroalgae 
Good 
Good
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1b) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Carmarthen Bay
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
High 
High
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Coastal - C12
Waterbody Category and Map Code.: 
GB651010610000
Waterbody ID and Name: 
SH 24578 40543
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Caernarfon Bay South 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Coastal - C13
Waterbody Category and Map Code.: 
GB671010400000
Waterbody ID and Name: 
SH 70111 80137
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Coastal Protection, ShellFisheries
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Good 
Good
Dissolved Oxygen 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Disproportionately expensive 
(M2b) 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Conwy Bay
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Coastal - C14
Waterbody Category and Map Code.: 
GB610100083000
Waterbody ID and Name: 
SH 32641 93315
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Structure
Reason for Designation: 
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Ecological Potential Assessment Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Cemlyn Lagoon
Coastal - C15
Waterbody Category and Map Code.: 
GB621008480000
Waterbody ID and Name: 
SM 53030 08594
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015 No Not Designated A/HMWB

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Grassholm Island & The Smalls 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Coastal - C16
Waterbody Category and Map Code.: 
GB681010120000
Waterbody ID and Name: 
SH 53089 70611
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
ShellFisheries
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Good 
Good
Dissolved Oxygen 
High 
High
Copper 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Disproportionately expensive 
(M2b) 
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Reduce sediment resuspension 
In Place
Reduce impact of dredging 
In Place
Prepare a dredging / disposal strategy 
In Place
Modify structure or reclamation 
Not In Place
Managed realignment of flood defence 
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Surveillance site:  No
Menai Strait
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Coastal - C17
Waterbody Category and Map Code.: 
GB610100084000
Waterbody ID and Name: 
SM 81032 07155
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive) No Not Designated A/HMWB

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
Pickleridge Lagoon
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB651010370000
SH 30286 73962 Good

Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Waterbody Category and Map Code.: 
GB621009600000
Waterbody ID and Name: 
SH 35026 19423
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macroalgae 
Good 
High
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
High 
High
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Coastal - C20
Waterbody Category and Map Code.: 
GB681010360000
Waterbody ID and Name: 
SH 27105 83378
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Coastal Protection, Navigation
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macroalgae 
Good 
Good
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
High 
High
Dissolved Oxygen 
High 
High
Copper 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3e, M3f)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Reduce sediment resuspension 
In Place
Reduce impact of dredging 
In Place
Prepare a dredging / disposal strategy 
In Place
Modify structure or reclamation 
Not In Place
Managed realignment of flood defence 
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
 
Surveillance site:  Yes
Holyhead Bay
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Coastal - C21
Waterbody Category and Map Code.: 
GB641008260000
Waterbody ID and Name: 
SS 70917 86276
National Grid Reference: 
Bad
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive), Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Coastal Protection
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Bad (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Phytoplankton 
Bad (Uncertain)
Bad
Disproportionately expensive 
(B1a) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1b) 
Dissolved Oxygen 
High 
High
Copper 
High 
High
Toluene 
High 
High
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3f)
Surveillance site:  Yes
Swansea Bay
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Indirect / offsite mitigation (offsetting measures)
Not In Place
Alter timing of dredging / disposal 
Not In Place
Reduce sediment resuspension 
Not In Place
Reduce impact of dredging 
Not In Place
Prepare a dredging / disposal strategy 
Not In Place
Avoid the need to dredge (e.g. minimise under-keel clearance; use fluid mud navigation; flow 
manipulation or training works) 
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Managed realignment of flood defence 
Not In Place
Bank rehabilitation / reprofiling
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Remove obsolete structure 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Benzene 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Waterbody Category and Map Code.: 
GB641010620000
Waterbody ID and Name: 
SH 55204 82766
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015, Good Chemical Status by 2015 Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Macroalgae 
High 
High
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
High 
High
Dissolved Oxygen 
High 
High
Iron 
High 
High
Toluene 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Anglesey North
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Cadmium And Its 
Compounds 
High 
High
Hexachlorobenzene 
High 
High
Hexachlorobutadiene 
High 
High
Hexachlorocyclohexane 
High 
High
Mercury And Its 
Compounds 
High 
High
Pentachlorophenol 
High 
High
Trichlorobenzenes 
High 
High
Trichloromethane 
High 
High
Aldrin, Dieldrin, Endrin & 
Isodrin 
High 
High
Carbon Tetrachloride 
High 
High
para - para DDT 
High 
High
Tetrachloroethylene 
High 
High
Trichloroethylene 
High 
High
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Invertebrates 
Good 
Good
Phytoplankton 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Waterbody Category and Map Code.: 
GB641008180000
Waterbody ID and Name: 
SS 42149 96153
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Good Ecological Status by 2015 Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive, Urban Waste Water Treatment Directive 
No Not Designated A/HMWB
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Phytoplankton 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Good 
Good
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T1
Waterbody Category and Map Code.: 
GB531005913500
Waterbody ID and Name: 
SS 55029 97485
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive, Urban Waste Water Treatment Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting elements Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1c) 
Dissolved Oxygen 
High 
High
Copper 
High 
High
Iron 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
Lead And Its Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Surveillance site:  Yes
LOUGHOR
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T2
Waterbody Category and Map Code.: 
GB511006407100
Waterbody ID and Name: 
SH 64290 16583
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive), Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
MAWDDACH
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T3
Waterbody Category and Map Code.: 
GB541005900900
Waterbody ID and Name: 
SS 67710 92241
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive, Urban Waste Water Treatment Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection, Navigation, Quayline, Structure 
Reason for Designation: 
GB641008260000
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
TAWE
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T4
Waterbody Category and Map Code.: 
GB521010207600
Waterbody ID and Name: 
SH 30451 81712
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB681010450000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
ALAW
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T5
Waterbody Category and Map Code.: 
GB541005800600
Waterbody ID and Name: 
SS 76367 89068
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Navigation
Reason for Designation: 
GB641008260000
Downstream Waterbody ID:

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
AFAN
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T6
Waterbody Category and Map Code.: 
GB541006608000
Waterbody ID and Name: 
SJ 01336 78648
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Coastal Protection
Reason for Designation: 
GB641011650000
Downstream Waterbody ID:

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Macroalgae 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3f)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Managed realignment of flood defence 
Not In Place
Increase in-channel morphological diversity 
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Surveillance site:  Yes
CLYWD
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Current Status (and certainty 
that status is less than good) 
Does not require assessment
Transitional - T7
Waterbody Category and Map Code.: 
GB521010207400
Waterbody ID and Name: 
SH 35494 68661
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Disproportionately expensive, Technically infeasible 
No Not Designated A/HMWB GB621010380000

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T8
Waterbody Category and Map Code.: 
GB521010201000
Waterbody ID and Name: 
SH 43955 63635
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB GB681010120000
Downstream Waterbody ID:

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
BRAINT
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T9
Waterbody Category and Map Code.: 
GB531006114100
Waterbody ID and Name: 
SN 00062 10017
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027, Good Chemical Status by 2015
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008220000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1a) 
Dissolved Oxygen 
High 
High
Copper 
High 
High
Iron 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Surveillance site:  Yes
MILFORD HAVEN INNER 
(For Protected Area Objectives see Annex D)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Cadmium And Its 
Compounds 
High 
High
Lead And Its Compounds 
High 
High
Mercury And Its 
Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Transitional - T10
Waterbody Category and Map Code.: 
GB521006110500
Waterbody ID and Name: 
SM 96023 37482
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
GWAUN
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T11
Waterbody Category and Map Code.: 
GB511006507300
Waterbody ID and Name: 
SH 57760 36617
National Grid Reference: 
Good
Current Overall Status 
Good by 2015
Status Objective (Overall):
Good Ecological Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:
Ecological Status   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
GLASLYN
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T12
Waterbody Category and Map Code.: 
GB511006206900
Waterbody ID and Name: 
SN 16292 48093
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive) 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Reason for Designation: 
GB621009580000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Macroalgae 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1a) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1a) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T13
Waterbody Category and Map Code.: 
GB521010207500
Waterbody ID and Name: 
SH 40277 67660
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: 
Natura 2000 (Habitats and/or Birds Directive), Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB621010380000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting elements Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3f)
Mitigation Measures that have defined Ecological Potential
Mitigation Measure 
Status
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Managed realignment of flood defence 
Not In Place
Increase in-channel morphological diversity 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
CEFNI
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB521006109400
SM 80051 23919 Moderate Good by 2027
Good Ecological Status by 2027
Disproportionately expensive, Technically infeasible 
Not Designated A/HMWB GB611008590003

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T15
Waterbody Category and Map Code.: 
GB511006315000
Waterbody ID and Name: 
SN 57932 80773
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Bathing Water Directive, Freshwater Fish Directive 
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Coastal Protection
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3f)
Surveillance site:  Yes
YSTWYTH /  RHEIDOL 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Indirect / offsite mitigation (offsetting measures)
Not In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Alter timing of dredging / disposal 
Not In Place
Reduce sediment resuspension 
Not In Place
Reduce impact of dredging 
Not In Place
Prepare a dredging / disposal strategy 
Not In Place
Avoid the need to dredge (e.g. minimise under-keel clearance; use fluid mud navigation; flow 
manipulation or training works) 
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Managed realignment of flood defence 
Not In Place
Bank rehabilitation / reprofiling
Not In Place
Increase in-channel morphological diversity 
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Remove obsolete structure 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Transitional - T16
Waterbody Category and Map Code.: 
GB531006013400
Waterbody ID and Name: 
SN 34631 08456
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive), 
Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB
Hydromorphological Designation: 
Reason for Designation: 
GB641008180000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(B1a) 
Supporting elements Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1e) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
TYWI & CYWYN & GWENDRAETH 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB541005815300
Waterbody ID and Name: 
SS 87719 76618
National Grid Reference: 
Good Good by 2015
Good Ecological Status by 2015, Good Chemical Status by 2015 Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive), 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Macroalgae 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Copper 
High 
High
Zinc 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

## Chemical Elements

Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and 
certainty of less than 
good) 
Cadmium And Its 
Compounds 
High 
High
Lead And Its Compounds 
High 
High
Nickel And Its Compounds 
High 
High
Transitional - T18
Waterbody Category and Map Code.: 
GB541005800700
Waterbody ID and Name: 
SS 73185 93531
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015, Good Chemical Status by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Shellfish Water Directive
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Quayline
Reason for Designation: 
GB641008260000
Downstream Waterbody ID:
Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting elements Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Good
Chemical elements 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Element 
Current status (and certainty of less than 
good) 
1,2-dichloroethane 
High 
High
Surveillance site:  Yes
NEATH
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T19
Waterbody Category and Map Code.: 
GB541006614800
Waterbody ID and Name: 
SH 77484 79375
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Technically infeasible
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive), Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Flood Protection
Reason for Designation: 
GB671010400000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
High 
High
Invertebrates 
Good 
Good
Macroalgae 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Good 
Good
Dissolved Oxygen 
High 
High
Iron 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3f)
Surveillance site:  Yes
CONWY
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Managed realignment of flood defence 
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Transitional - T20
Waterbody Category and Map Code.: 
GB511006115200
Waterbody ID and Name: 
SN 04898 40058
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Status Objective (Overall):
Good Ecological Status by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: 
No
SSSI (Non-N2K) related: 
Not Designated A/HMWB GB621009580000
Downstream Waterbody ID:
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Macroalgae 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
Moderate (Uncertain)
Moderate
Disproportionately expensive 
(N1o) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB511006414900
SH 57719 02765 Moderate Good by 2027
Good Ecological Potential by 2027
Disproportionately expensive, Technically infeasible 

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Macroalgae 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Technically infeasible (M3f)
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

Mitigation Measure 
Status
Indirect / offsite mitigation (offsetting measures)
Not In Place
Retain marginal aquatic and riparian habitats (channel alteration)
Not In Place
Operational and structural changes to locks, sluices, weirs, beach control, etc
Not In Place
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Not In Place
Managed realignment of flood defence 
Not In Place
Increase in-channel morphological diversity 
Not In Place
Preserve and, where possible, restore historic aquatic habitats
Not In Place
Removal of hard bank reinforcement / revetment, or replacement with soft engineering solution 
Not In Place
Remove obsolete structure 
Not In Place
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Transitional - T22
Waterbody Category and Map Code.: 
GB521006509600
Waterbody ID and Name: 
SH 37870 34915
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Navigation
Reason for Designation: 
GB651009350000
Downstream Waterbody ID:

Ecological Potential   (note: no biology data) 
Current Status (and certainty 
that status is less than good) 
Good
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Good 
Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
ERCH
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T23
Waterbody Category and Map Code.: 
GB511006511000
Waterbody ID and Name: 
SH 46668 37583
National Grid Reference: 
Moderate
Current Overall Status 
Good by 2027
Good Ecological Status by 2027
Disproportionately expensive, Technically infeasible 
No Not Designated A/HMWB GB651009350000

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB521006501200
SH 44829 59491 Good Good by 2015
Not Designated A/HMWB GB681010120000
Ecological Status    
Current Status (and certainty 
that status is less than good) 
Good
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Inorganic 
Nitrogen 
High 
High
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T25
Waterbody Category and Map Code.: 
GB521006407200
Waterbody ID and Name: 
SH 57208 27671
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive, Technically infeasible 
Justification if overall objective is 
not good status by 2015: 
Freshwater Fish Directive, Natura 2000 (Habitats and/or Birds Directive)
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
Navigation
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:

Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  No
ATRO
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Transitional - T26
Waterbody Category and Map Code.: 
GB511006407000
Waterbody ID and Name: 
SN 62781 94811
National Grid Reference: 
Moderate
Current Overall Potential 
Good by 2027
Status Objective (Overall):
Good Ecological Potential by 2027
Status Objective(s): 
Disproportionately expensive
Justification if overall objective is 
not good status by 2015: Protected Area Designation: 
Bathing Water Directive, Freshwater Fish Directive, Natura 2000 (Habitats 
and/or Birds Directive), Shellfish Water Directive 
No
SSSI (Non-N2K) related: 
Heavily Modified
Hydromorphological Designation: 
ShellFisheries
Reason for Designation: 
GB621009600000
Downstream Waterbody ID:
Ecological Potential    
Current Status (and certainty 
that status is less than good) 
Moderate
Biological elements Element 
Current status (and certainty of less than 
good) 
Fish 
Good 
Good
Invertebrates 
High 
High
Supporting elements 
Element 
Current status (and certainty of less than 
good) 
Dissolved Oxygen 
High 
High
Supporting conditions 
Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Ecological Potential Assessment 
Element 
Current status
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Mitigation Measures 
Assessment 
Moderate 
Moderate
Disproportionately expensive 
(M2b) 
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Surveillance site:  Yes
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 
GB521006501100
SH 47874 62474 Good by 2027
Good Ecological Status by 2027
Disproportionately expensive, Technically infeasible 

Note: Current Status and Status Objectives for this water body are based on Expert Judgement 

Ecological Status    
Current Status (and certainty 
that status is less than good) 
Moderate (Uncertain)
Supporting conditions Element 
Current status (and certainty of less than 
good) 
Tidal Regime - Freshwater 
Flow 
Supports Good
Supports Good
Morphology 
Supports Good
Supports Good
Chemical Status 
Current Status (and certainty 
that status is less than good) 
Does not require assessment
Predicted Status by 
2015 
Justification for not achieving 
good status by 2015 

B.12 Canals, surface water transfers and SSSI ditches Canals, surface water transfer and SSSI ditches in the Western Wales River Basin District There are 2 canal water bodies, 6 surface water transfer water bodies and no SSSI ditches in the Western Wales River Basin District.  
 

Water body tables for canals and surface water transfers in the Western Wales River 
Basin District 
 
The current status and objectives for canals and surface water transfers in the following 
tables are largely based on hydromorphological assessments.  Where information on any 
biological, physico-chemical or chemical elements was available these results have also 
been incorporated.  The biological, physico-chemical or chemical elements will be further 
assessed, where appropriate, and the results will inform future assessments of status and 
objectives. 
 
The hydromorphological assessments presented here are based on the presence or 
absence of measures that mitigate the modified or artificial hydromorphological 
characteristics of the canal or surface water transfer. This approach is explained in more 
detail in sections B.4.1 and B 4.2 in this annex . 
 
Note: In the following water body tables, only the relevant elements of the status objectives 
(shown under the orange sub headings) are shown.   
 

Canal - Ca1
Waterbody Category and Map Code.: 
GB71010503
Waterbody ID and Name: 
SN 70359 01706
National Grid Reference: 
Good
Current Overall Potential 
Good by 2015
Status Objective (Overall):
Good Ecological Potential by 2015
Status Objective(s): 
Justification if overall objective is 
not good status by 2015: 
Not Designated
Protected Area Designation: 
No
SSSI (Non-N2K) related: 
Artificial
Hydromorphological Designation: 
Other
Reason for Designation: 
Downstream Waterbody ID:
Ecological Potential   (note: no biology data) 
Good
Current Status (and certainty 
that status is less than good) Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
pH 
High 
Phosphate 
High 
Temperature 
High 
Copper 
High 
Zinc 
High 
Ammonia (Annex 8) 
High 
Ecological Potential Assessment 
Current status
Element 
Justification for not achieving 
good status by 2015 
Good 
Mitigation Measures 
Assessment 
Surveillance site:  No
Swansea Canal
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
High High High High High High
High
Predicted Status by 
2015 
Good

Status
In Place
Mitigation Measure Appropriate techniques (invasive species) 
In Place
Appropriate timing (vegetation control) 
In Place
Appropriate vegetation control technique 
In Place
Selective vegetation control regime 
In Place
Phased de-watering and other techniques 
In Place
Manage disturbance 
Site selection (dredged material disposal) (e.g. avoid sensitive sites)
In Place
In Place
Sediment management 
In Place
Alter timing of dredging / disposal 
In Place
Reduce sediment resuspension 
In Place
Reduce impact of dredging 
In Place
Prepare a dredging / disposal strategy 
In Place In Place
Avoid the need to dredge (e.g. minimise under-keel clearance; use fluid mud navigation; flow 
manipulation or training works) 
Preserve and where possible enhance ecological value of marginal aquatic habitat, banks and 
riparian zone 
Chemical Status 
Does not require assessment
Current Status (and certainty 
that status is less than good) 
Waterbody Category and Map Code.: 
Canal - Ca2
Surveillance site:  No
Waterbody ID and Name: 
Neath and Tennant
GB71010012
National Grid Reference: 
SS 77443 99364
Current Overall Potential 
Good Good by 2015
Status Objective (Overall):
Status Objective(s): 
Good Ecological Potential by 2015
Justification if overall objective is 
not good status by 2015: 
Protected Area Designation: 
Not Designated
SSSI (Non-N2K) related: 
No
Hydromorphological Designation: 
Artificial
Reason for Designation: 
Other
Downstream Waterbody ID:
Ecological Potential   (note: no biology data) 
Good
Current Status (and certainty 
that status is less than good) Supporting elements Element 
Current status (and certainty of less than 
good) 
Ammonia (Phys-Chem) 
High 
pH 
High 
Phosphate 
High 
Temperature 
High 
Copper 
High 
Iron 
High 
Zinc 
High 
Ammonia (Annex 8) 
High 
Ecological Potential Assessment 
Current status
Element 
Justification for not achieving 
good status by 2015 
Good 
Mitigation Measures 
Assessment 
Chemical Status 
Does not require assessment
Current Status (and certainty 
that status is less than good) 
Justification for not achieving 
good status by 2015 
Predicted Status by 
2015 
High High High High High High
High High
Predicted Status by 
2015 
Good
Waterbody Category and Map Code.: 
Surface Water Transfer - SWT1
Surveillance site:  No
Waterbody ID and Name: 
Merthyr Mawr
GB810100093
National Grid Reference: 
SS 86834 76890
Current Overall Potential 
Good Good by 2015
Status Objective (Overall):
Status Objective(s): 
Good Ecological Potential by 2015
Justification if overall objective is 
not good status by 2015: 
Protected Area Designation: 
Not Designated
SSSI (Non-N2K) related: 
No
Hydromorphological Designation: 
Artificial
Reason for Designation: 
Water Regulation (strategic transfer)
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Good
Current Status (and certainty 
that status is less than good) Chemical Status 
Does not require assessment
Current Status (and certainty 
that status is less than good) 
Waterbody Category and Map Code.: 
Surface Water Transfer - SWT2
Surveillance site:  No
Waterbody ID and Name: 
unknown
GB810100052
National Grid Reference: 
SS 74020 94862
Current Overall Potential 
Good Good by 2015
Status Objective (Overall):
Status Objective(s): 
Good Ecological Potential by 2015
Justification if overall objective is 
not good status by 2015: 
Protected Area Designation: 
Not Designated
SSSI (Non-N2K) related: 
No
Hydromorphological Designation: 
Artificial
Reason for Designation: 
Water Regulation (strategic transfer)
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Good
Current Status (and certainty 
that status is less than good) Chemical Status 
Does not require assessment
Current Status (and certainty 
that status is less than good) 
Waterbody Category and Map Code.: 
Surface Water Transfer - SWT3
Surveillance site:  No
Waterbody ID and Name: 
unknown
GB810100021
National Grid Reference: 
SN 39623 20884
Current Overall Potential 
Good Good by 2015
Status Objective (Overall):
Status Objective(s): 
Good Ecological Potential by 2015
Justification if overall objective is 
not good status by 2015: 
Protected Area Designation: 
Not Designated
SSSI (Non-N2K) related: 
No
Hydromorphological Designation: 
Artificial
Reason for Designation: 
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Good
Current Status (and certainty 
that status is less than good) Chemical Status 
Does not require assessment
Current Status (and certainty 
that status is less than good) 
Waterbody Category and Map Code.: 
Surface Water Transfer - SWT4
Surveillance site:  No
Waterbody ID and Name: 
unknown
GB810100027
National Grid Reference: 
SN 75738 69205
Current Overall Potential 
Good Good by 2015
Status Objective (Overall):
Status Objective(s): 
Good Ecological Potential by 2015
Justification if overall objective is 
not good status by 2015: 
Protected Area Designation: 
Freshwater Fish Directive
SSSI (Non-N2K) related: 
No
Hydromorphological Designation: 
Artificial
Reason for Designation: 
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Good
Current Status (and certainty 
that status is less than good) Chemical Status 
Does not require assessment
Current Status (and certainty 
that status is less than good) 
Waterbody Category and Map Code.: 
Surface Water Transfer - SWT5
Surveillance site:  No
Waterbody ID and Name: 
unknown
GB810100036
National Grid Reference: 
SH 70124 60856
Current Overall Potential 
Good Good by 2015
Status Objective (Overall):
Status Objective(s): 
Good Ecological Potential by 2015
Justification if overall objective is 
not good status by 2015: 
Protected Area Designation: 
Not Designated
SSSI (Non-N2K) related: 
No
Hydromorphological Designation: 
Artificial
Reason for Designation: 
Wider Environment
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Good
Current Status (and certainty 
that status is less than good) Chemical Status 
Does not require assessment
Current Status (and certainty 
that status is less than good) 
Waterbody Category and Map Code.: 
Surface Water Transfer - SWT6
Surveillance site:  No
Waterbody ID and Name: 
Ystalyfera Feeder
GB810100240
National Grid Reference: 
SN 75501 06890
Current Overall Potential 
Good Good by 2015
Status Objective (Overall):
Status Objective(s): 
Good Ecological Potential by 2015
Justification if overall objective is 
not good status by 2015: 
Protected Area Designation: 
Not Designated
SSSI (Non-N2K) related: 
No
Hydromorphological Designation: 
Artificial
Reason for Designation: 
Other
Downstream Waterbody ID:
Note: Current Status and Status Objectives for this water body are based on Expert Judgement 
Ecological Potential   (note: no biology data) 
Good
Current Status (and certainty 
that status is less than good) Ecological Potential Assessment 
Current status
Element 
Justification for not achieving 
good status by 2015 
Good 
Mitigation Measures 
Assessment 
Chemical Status 
Does not require assessment
Current Status (and certainty 
that status is less than good) 
Predicted Status by 
2015 
Good