AndreaBozzo/ceres-open-data-index huggingface dataset:
Geurie Flood Study

Overview

In order to properly plan and manage both existing and future development within the floodplain,
there is a need for Council to establish appropriate flood planning levels using a rigorous, up to date
technical analysis. Webb, McKeown &amp; Associates were engaged by Wellington Council to prepare
this Flood Study to provide the technical foundation for the determination of flood planning levels
within the township of Geurie (refer to Figure 1). The primary objectives of the study are:
<ul>
<li>to define the flood behaviour for the Boori, Geurie, Heatherbrae and Limestone Creek
catchments within the Village and Rural 1(c) areas,</li>
<li>to establish numerical hydrologic and hydraulic models to determine flood flows, velocities
and levels for various design events,</li>
<li>to formulate the models such that the effects on flood behaviour due to catchment
development and possible flood mitigation measures can be investigated in the future.</li>
</ul>

This report details the methodology used and the results of the design flood analysis. It includes:
<ul>
<li>a summary of available data,</li>
<li>reasons supporting the choice of hydrologic and hydraulic models,</li>
<li>establishment of these models,</li>
<li>definition of design flood behaviour in accordance with the NSW Floodplain Development
Manual (2005).</li>
</ul>

All levels provided in this report are in metres (m) to Australian Height Datum (AHD) which is the
standard national survey reference plane approximating mean sea level. A glossary of flood related
terms is provided in <strong>Appendix A</strong>.

<strong>Results</strong> for Geurie Creek, Boori Creek, Limestone and Heatherbrae Creeks, Overland Flooding and Rural Small Holdings north of the village, are discussed

Tags: Geurie, hydraulic model, hydrologic model
Organization: Dubbo Regional Council
Broughton Creek Floodplain Risk Management Study

<strong>Introduction</strong>

Cardno were commissioned by Shoalhaven City Council to undertake the Floodplain
Risk Management Study and Plan for the Broughton Creek catchment. The
catchment is approximately 518 km2 in size and surrounds the township of Berry on
the NSW south coast.
The study has been undertaken to define the existing flooding behaviour and
associated hazards, and to investigate possible mitigation options to reduce flood
damage and risk. The tasks were undertaken alongside community consultations to
ensure that community concerns were addressed.
In the past, flooding in the catchment has caused property damage and posed a
hazard to residents. Significant flood events occurred in 2011, 2005, 2002, 1988 and
1974. A flood study was previously prepared that identified the flood behaviour in the
study area (SMEC, 2008). An update has subsequently been undertaken in this study
to improve the definition of the flood behaviour in the Berry Township, and in the
areas immediately adjacent to the township. Details on the update and outcomes of
the study are provided in Appendix B through Appendix E.
Flooding was assessed for the 50% AEP, 20% AEP, 10% AEP, 5% AEP, 2% AEP
and 1% AEP events, as well as the Probable Maximum Flood (PMF). Flood levels,
depths and velocities were determined, as well as provisional hazard categories, and
hydraulic categories.
From the base case results, a number of flood mitigation options were examined to
manage flooding within the Broughton Creek catchment. The identification and
examination of these options was done in accordance with the NSW Government
Floodplain Development Manual (NSW Government, 2005).

Organization: Shoalhaven City Council
Griffith Aerodrome Overland Flow Floodplain Risk Management Study and Plan - REPORT

The Griffith Aerodrome Floodplain Risk Management Plan has been prepared in accordance with the NSW Floodplain Development Manual (Reference 3) and:
<ul>
<li>Is based on a comprehensive and detailed evaluation of all factors that affect and are affected by the use of flood prone land;</li>
<li>Represents   the   considered   opinion   of   the    Aerodrome   Floodplain  Management Committee on how to best manage its flood risk and flood prone land; 
and</li>
<li>Provides a long-term path for the future development of the Aerodrome.</li>
</ul>

Tags: Aerodrome, Airport, Griffith Airport, Remembrance Driveway, Scenic Hill
Organization: Griffith City Council
Avoca Lagoon Floodplain Management Study

Avoca Lagoon is the largest of the four coastal lagoons within Gosford. The lagoon has a cruciform shape
with a surface area of 97.5 hectares and average depth of 1.3 metres. The let-out-level is approximately 2
metres above mean sea level. The lagoon entrance is normally closed due to the action of coastal dynamic
processes which result in the formation of a beach berm across the lagoon entrance, linking Avoca and
North Avoca beaches.
Gosford City Council has records of openings of the Avoca Lagoon entrance commencing in 1972. These
records show that the entrance has been opened 58 times over the period 1976 to 2003, primarily for flood
control purposes. The entrance has broken out naturally on four other occasions when floodwaters caused
the lagoon level to rise above the level of the beach berm.
Records of inundation of Avoca Lagoon by ocean storms are not as complete as those available for the
opening of the entrance. Limited data are available for severe ocean storms in May 1974, June 1978 and
August 1986 when waves overtopped the beach berm and entered the lagoon.

The floodplain management process seeks to promote the adoption of an integrated approach to the management of all lands within the Avoca Lagoon catchment.
This floodplain management study addresses the following issues:
<ul>
<li>existing flood behaviour;</li>
<li>environmental and planning considerations;</li>
<li>future development;</li>
<li>climatic change;</li>
<li>flood damages;</li>
<li>floodplain management options;</li>
<li>floodplain management impacts;</li>
<li>floodplain management economics;</li>
<li>preferred floodplain management strategies.</li>
</ul>

Tags: Avoca, Avoca Lagoon
Organization: Central Coast Council
Mudflat Creek Floodplain Risk Management Study

The Mudflat Creek catchment is characterised by a distinct upper and lower section (<em>refer Figure 1</em>).

The upper section of the catchment is located in the plateau area of Killcare Heights. This section
of the catchment comprises of residential development around Wards Hill Road, The Scenic Road
and Stewart Street together with a large proportion of natural bushland or rural type land.
From the plateau the catchment slopes very steeply down undeveloped, densely forested slopes
to the area bounded by Fraser Road and Hardys Bay. This lower section is relatively flat and low
lying. Runoff from the plateau area drains to Fraser Road via two natural gullies. Pipe and overland
flow systems convey flows from these natural gullies, through the residential areas to Mudflat
Creek. Mudflat Creek then travels through the rear of properties 37-63 Fraser Road before reaching
the bridge in Noble Road and its outlet to Hardys Bay.

Measures and Comparisons in report are:
<ul>
<li>Retarding Basins/Farm Dams in the Upper Catchment</li>
<li>Channel Modifications </li>
<li>Levees, Flood Gates and Pumps</li>
<li>Local Drainage Issues</li>
<li>Measures to Mitigate the Impact of Wave Runup</li>
<li>Flood Warning</li>
<li>Evacuation Planning </li>
<li>Public Information and Raising Flood Awareness</li>
<li>Development Control and Flood Planning Levels</li>
<li>House Raising</li>
<li>Voluntary Purchase</li>
</ul>

Tags: Gosford, Mudflat Creek
Organization: Central Coast Council
Mudflat Creek Floodplain Risk Management Plan

The Mudflat Creek catchment is characterised by a distinct upper and lower section. The upper
section of the catchment is located in the plateau area of Killcare Heights. This section of the
catchment comprises of residential development around Wards Hill Road, The Scenic Road and
Stewart Street together with a large proportion of natural bushland or rural type land.

From the plateau the catchment slopes very steeply down undeveloped, densely forested slopes
to the area bounded by Fraser Road and Hardys Bay. This lower section is relatively flat and low
lying. Runoff from the plateau area drains to Fraser Road via two natural gullies. Pipe and overland
flow systems convey flows from these natural gullies, through the residential areas to Mudflat Creek. Mudflat Creek then travels through the rear of properties 37-63 Fraser Road before reaching
the bridge in Noble Road and its outlet to Hardys Bay.

The recommended floodplain management measures for the Mudflat Creek catchment are
summarised in <em>Table ii</em> in the summary report (<em>The priority ranking is based upon a combination of reduction in flood risk, ease of implementation
and cost/funding implications. There is no particular order of the measures within each priority
categorisation</em>).

Tags: Gosford, Mudflat Creek
Organization: Central Coast Council
South Creek Flood Study

South Creek is a 7.3 km2 catchment which drains to the southern shore of Narrabeen Lagoon
through Cromer Golf Course (Figures 1, 2 and 3). The catchment area is predominantly occupied
by urban development (59%) including both residential and commercial/light industrial development,
with the remainder comprised of open space and forested areas (41%). The catchment has two
main tributary branches. South Creek is the major watercourse and Wheeler Creek is the main
tributary draining a significant proportion of the western catchment.

In view of the increasing urban development and the need to accurately define the nature and
extent of the flood problem, Warringah Council engaged Webb, McKeown &amp; Associates to
undertake a Flood Study.

The primary objectives of this Flood Study are:
<ul>
<li>to define the flood behaviour of the South Creek catchment by quantifying flood levels,
velocities and flows for a range of design flood events under existing catchment and
floodplain conditions,</li>
<li>to assess the hydraulic categories and undertake provisional flood hazard mapping (in
accordance with the NSW Floodplain Management Manual (2001)),</li>
<li>to formulate a suitable hydraulic model that can be used in a subsequent Floodplain Risk
Management Study to assess various floodplain management measures, including the
effects of future development.</li>
</ul>

As directed by Council, the scope of this study is such that:
<ul>
<li>the  extent  of  the  hydrologic  model  covers  the  entire  South  Creek  catchment  draining  to
Narrabeen Lagoon,</li>
<li>the hydraulic model incorporates South Creek from the Lagoon up to Brooker  Avenue and
Wheeler Creek up to 1.65 km upstream from the confluence with South Creek.</li>
</ul>

In general, this Flood Study does not consider flooding from local drainage which may result from
inadequate urban drainage provisions.

This report details the results and findings of the Flood Study investigations. The key elements
include:
<ul>
<li>a summary of available flood related data,</li>
<li>calibration of the hydrologic and hydraulic models,</li>
<li>definition of  the  design  flood  behaviour  for  existing  conditions  through  the  analysis  and
interpretation of model results.</li>
</ul>

Tags: South Creek, Warringah, Wheeler Creek, hydraulic model, hydrologic model
Organization: Northern Beaches Council
Mudflat Creek Flood Study

Mudflat Creek is a 123 hectare catchment which drains to Hardys Bay through the lower Killcare
district (<em>refer Figures 1 and 2</em>). The lower section of the catchment is predominantly occupied
by urban residential development. A natural escarpment divides the lower section of the
catchment from the upper plateau area. This upper plateau is predominantly natural or rural
land type with some residential development around Stewart Street, The Scenic Road and
Wards Hill Road (<strong>Figure 2</strong>).

In light of reported flooding incidents in the study area, and following on from the Killcare
Catchment Drainage Investigation that was completed in 1999 (Reference 1), Gosford City
Council engaged Webb, McKeown &amp; Associates to undertake a Flood Study.
The primary objectives of this Flood Study are:
<ul>
<li>to define the flood behaviour of the Mudflat Creek catchment by quantifying flood
levels, velocities and flows for a range of design flood events under existing catchment
and floodplain conditions,</li>
<li>to assess the hydraulic categories and undertake provisional flood hazard mapping in
accordance with the NSW Floodplain Development Manual 2005 (Reference 2),</li>
<li>to assess the extent of the flooding problem by undertaking a flood damages
assessment,</li>
<li>to formulate suitable hydrologic and hydraulic models that can be used in a
subsequent Floodplain Risk Management Study.</li>
</ul>

As directed by Council, the scope of this study is such that:
<ul>
<li>the extent of the hydrologic model covers the entire Mudflat Creek catchment draining
to Brisbane Water,</li>
<li>the hydraulic model incorporates Mudflat Creek from Brisbane Water to a point
approximately 100 m upstream of Fraser Road,</li>
<li>in establishing the hydraulic model and appropriate boundary conditions, consideration
has been made of the impacts of tides and Brisbane Water flooding on the Mudflat
Creek catchment.</li>
</ul>

This report details the results and findings of the Flood Study investigations, the key elements
of which include:
<ul>
<li>a summary of available flood related data,</li>
<li>calibration of the hydrologic and hydraulic models,</li>
<li>definition of the design flood behaviour for existing conditions through the analysis and
interpretation of model results.</li>
</ul>

Tags: Gosford, Mudflat Creek, hydraulic model, hydrologic model
Organization: Central Coast Council
Empire Bay Catchment Flood Study

Flood modelling of local catchment runoff was completed the Empire Bay catchment for a range of annual exceedance probabilities of storms from 100% AEP to 0.5% AEP and up to a PMF event.

In a 1% AEP event, the modelling shows that some properties and roads may be inundated up to 0.5m. This occurs notably around Gordon Road, Boongala Avenue, Rickard Road, and Greenfield Road in the main residential area of Empire Bay and around the main drainage channels at Pomona Road and Empire Bay Drive to Palmers Lane in the rural residential area. In the 1% AEP event, the modelling showed that 22 houses are flooded above the floor level when the storm runoff is combined with a 1% probability of exceedance level in the estuary.

Mapping of high provisional hazard in the catchment for the 1% AEP event shows that it is limited to the channel behind Myler Avenue and the channel north of Pomona Road which conveys runoff to Allawa Close. Scattered occurrences of high hazard also feature adjacent to parts of Empire Bay Drive. Hydraulic categorisation mapping for the 1% AEP shows floodway areas along the main watercourses from Pomona Road across Empire Bay Drive, and also some road near the main residential areas of Empire Bay and Bensville. Flood storage areas are identified in some properties, roads, and the open space / vegetated areas within the catchment. Increases to sea levels due to climate change have the potential to significantly affect flood impacts, particularly in the low elevation areas of the Empire Bay catchment. 
The Floodplain Management Authority’s Prioritisation Ranking table for the Empire Bay catchment is included as Appendix D.

Tags: Empire Bay, hydraulic model, hydrologic model
Organization: Central Coast Council
Lake Macquarie Waterway - Flood Risk Management Study & Plan

Flood Risk Management Study &amp; Plan - Main report (Part 1 of 4)

This Lake Macquarie Waterway Flood Risk Management Study and Plan constitutes a review of
the second and third stage of the management process, namely the August 2000 Lake
Macquarie Floodplain Management Study and the July 2001 Lake Macquarie Floodplain
Management Plan. This review has been prepared by consultant WMAwater for Lake
Macquarie City Council and was undertaken following a review of the 1998 Lake Macquarie
Flood Study, to include the June 2007 long weekend storm/flood event and incorporation of the
implications of climate change. The results of this Waterway Flood Risk Management Study
and Plan Review will provide the basis for the future management of flood liable foreshores
areas surrounding the Lake Macquarie waterway. The study concentrates on those areas of the
foreshore within the boundaries of Lake Macquarie City Council, with no investigation of land
within the Wyong local government area.

Tags: Lake Macquarie
Organization: Data.NSW
Stony Creek Floodplain Risk Management Plan

This Floodplain Risk Management Study investigates what can be done to reduce or
manage the effects of flooding in the catchment. The Floodplain Risk Management Plan
recommends a mix of strategies to manage the risks of flooding.
Using the merits-based approach advocated in the NSW State Government’s Floodplain
Development Manual (2005) and in consultation with the community, Council and state
agency stakeholders, a number of potential options for the management of flooding were
identified.
These options included:
• flood modification measures;
• property modification measures; and
• emergency response measures.
An extensive list of options was assessed against a range of criteria (technical, economic,
environmental and social). Hydraulic modelling of some of the flood modification options
was undertaken to provide a comprehensive analysis of those options that would involve
significant capital expenditure.

Tags: Awaba State Forest, Blackalls Park, Stony Creek, Toronto
Organization: Data.NSW
Wallarah Creek Catchment Flood Study - Final Report

Report is two parts:
<ul>
<li>VOLUME 1: Report and Appendices;</li>
</ul>

VOLUME 2: Figures;

Tags: Blue Haven, Budgewoi Lake, Bushells Ridge, Charmhaven, Doyalson, San Remo, Spring Creek, Wallarah, Wallarah Creek, Woongarrah
Organization: Central Coast Council
Bardwell Creek 2D Flood Study Review - Final Report

The study was commissioned by Bayside Council, with the assistance of the NSW Government Office of Environment and Heritage (OEH). Additional information has been provided by Sydney Water Corporation (SWC).

The Flood Study comprises the development of computational hydrologic and hydraulic models that define design flood behaviour for the 20% AEP (0.2 EY), 10% AEP, 5% AEP, 1% AEP and 0.5% Annual Exceedance Probability (AEP) design storms and the Probable Maximum Flood (PMF) in the Bardwell Creek and Wolli Creek catchments.

Tags: Bardwell Creek
Organization: Bayside Council
Middle Creek, Pearl Beach Floodplain Risk Management Plan

This report documents the preferred management options for Middle Creek, Central coast NSW and incorporates them
into a program of works that identifies the likely cost of each measure and their projected benefit
to the Pearl Beach community.

IMPLEMENTATION OF THE PLAN

The following floodplain management strategies are recommended for implementation under this
Floodplain Risk Management Plan. Further details of the actions associated with each strategy are
provided in <strong>Table 6</strong>.
<ol>
<li>Construct two low level flood levees at the rear of properties between 10 and 16 Emerald
Avenue, Pearl Beach.</li>
<li>Encourage landowners to establish a Rivercare group and seek assistance from the Natural
Heritage Trust and Hunter-Central Rivers Catchment Management Authority to undertake
creek corridor management activities. These activities would include vegetation
management, bed and bank stabilisation works and small-scale works to increase channel
conveyance.</li>
<li>Install a piped stormwater system along Pearl Beach Drive to reduce the magnitude of
stormwater runoff carried by Middle Creek during large flood events.</li>
<li>Update Development Control Plan No.162 (Residential Development at Pearl Beach) to
include additional flood related development controls for the Middle Creek floodplain (refer
Section 3.4.1), and incorporate changes into the new Citywide DCP. Strengthen all related
existing Council planning and development controls.</li>
<li>Monitor the extent of landscaping and bed or bank stabilisation works within the Middle
Creek floodplain in order to enforce the proposed requirements of the Gosford Citywide DCP.</li>
<li>Develop a formal Flood Emergency Response Plan for Middle Creek as a sub-plan to the
Gosford City Displan (2005), which is to include details of the recommended flood
evacuation route and flood refuge.</li>
</ol>

Tags: Middle Creek, Pearl Beach
Organization: Central Coast Council
Albury Floodplain Risk Management Study and Plan - Report - 2016

<em>Complete report</em>

The Albury Floodplain Risk Management Study assesses floodplain management issues in the Albury LGA, and investigates potential management options for the area. The study, which follows on from the flood studies undertaken for the area, has been undertaken in accordance with the NSW Government’s Flood Prone Land Policy. A full assessment of the existing flood risk in the catchment has been carried out, including flood hazard across the various catchments, overfloor flooding of residential, commercial and industrial properties, identification of known flooding issues and hotspots, and emergency response during a flood event. A range of measures aimed at managing this flood risk were also assessed for their efficacy across a range of criteria, which will allow options to be recommended as part of the Floodplain Risk Management Plan for the area. Measures included upgrade of the South Albury levee, retarding basins, pit and pipe upgrades and various property modification measures.

Tags: Albury, Bungambrawatha Creek, Eight Mile, Eight Mile Creek, Hamilton Valley, Lavington, Murray River, Table Top, Thurgoona
Organization: Albury City Council
Ourimbah Creek Catchment Flood Study Report Volume 1

Flood Study report and appendices (Volume 1)
For  figures as well as an "Individual Figures"  see Volume 2

Tags: Bangalow Creek, Canada Drop Down Creek, Central Coast, Chittaway Creek, Cut Rock Creek, Dog Trap Gully, Fountaindale, Kangy Angy Creek, Kulnura, Lisarow, Ourimbah, Ourimbah Creek, Tuggerah Lake, Tumbi Umbi, Wyong
Organization: Central Coast Council
Turo Creek, Pretty Beach Floodplain Risk Management Study

This Floodplain Risk Management Study (FRMS) for Turo Creek, Pretty Beach, has been
undertaken by Cardno Lawson Treloar for Gosford City Council to identify, assess and compare
various options for the management of flood risk within the Turo Creek floodplain. The study has
been undertaken in accordance with the NSW Government Floodplain Development Manual
(2005).

A locality plan can be found in <strong>Figure 1.1</strong>. The outline of the study area can be found in <strong>Figure 1.2</strong>.

The report format follows the study methodology, which involved:
<ul>
<li>Community consultation (<strong>Section 2</strong>)</li>
<li>A review of the Flood Study, including remodelling of the floodplain (<strong>Section 3</strong>)</li>
<li>An assessment of the current:
· economic impact of flooding (<strong>Section 4</strong>)
· emergency response arrangements (<strong>Section 5</strong>)
· planning and policy framework (<strong>Section 6</strong>)
· Flood Planning Level (<strong>Section 7.12</strong>)
· environmental and social features of the floodplain (<strong>Section 8</strong>)
· Identification of Options (<strong>Section 9</strong>)
· Assessment of Options (<strong>Section 13</strong>)</li>
</ul>

An appreciation of the catchment and floodplain was gained by carrying out a review of
available information and undertaking two field inspections. The first field inspection was
undertaken by the study team on the 27 May 2004 and the second inspection was carried out on
the 3 March 2005 in the company of Council representatives and a local resident. A
photographic montage of key features in the floodplain can be found in <strong>Appendix A</strong>.

Tags: Pretty Beach, Turo Creek
Organization: Central Coast Council