AndreaBozzo/ceres-open-data-index huggingface dataset:
Cockrone Lagoon Floodplain Management Plan

The Floodplain Management Plan divides the Cockrone Lagoon area into six precincts:
<ul>
<li>Cockrone Lagoon - Beach Berm    High Hazard Floodway/Investigation</li>
<li>Cockrone Lagoon - Entrance Area    High Hazard – Low Hazard
Floodway/Investigation</li>
<li>Cockrone Lagoon - Storage Area    Low Hazard Flood storage</li>
<li>Cockrone Lagoon - Floodway Area    High Hazard Floodway</li>
<li>Merchants Creek - Floodway Area    High Hazard Floodway</li>
<li>Newell Road Floodway    High Hazard Floodway</li>
</ul>

These precincts have been classified for flood hazard as:
High Hazard - Floodways
- Cockrone Lagoon beach berm;
- Cockrone Gully, from the upstream study boundary to its confluence with Cockrone
Lagoon (identified as Cockrone Lagoon floodway);
- Merchants Creek floodway from the confluence of Merchants Creek with Cockrone
Lagoon to the upstream study extent; and
- an existing open drain through the residential areas bounded by Newell Road and Three
Points Avenue.
High Hazard – Low Hazard Floodway (Floodway Investigation area)
- Cockrone Lagoon at its entrance to the ocean (Floodway/Investigation Area);
Low Hazard - Flood Storage
- Cockrone Lagoon and foreshores excepting high hazard areas above.
These precincts are illustrated on Figures 2 and 3, while Figure 4 provides greater detail in the Cockrone
Lagoon Entrance Area.
Council has adopted a policy of opening the lagoons when water level reaches RL 2.53 m AHD (identified
as the let-out-level). Council has, in the past, also adopted a policy that requires new buildings to have
floor levels above RL 4.3 m AHD. These two policies effectively constitute Council's current floodplain
management practice around Cockrone Lagoon.

Tags: Cockrone Lagoon, MacMasters Beach
Organization: Central Coast Council
Lake Macquarie Waterway - Flood Study 2012

The key objective of this Flood Study is to develop a suitable hydrologic/hydraulic model that
can project flood and permanent inundation water levels in Lake Macquarie from rainfall, sea
level rise and storm surge. These results will be used by Lake Macquarie City Council, in
consultation with the community of Lake Macquarie City, to manage flood and permanent
inundation risks to low lying land around the Lake Macquarie waterway.
The key stages in the process are:
Undertaken a comprehensive review of the 1998 Lake Macquarie Flood Study (Part 1 –
Reference 1) and develop suitable hydrologic/hydraulic models to define flood behaviour
over the full range of design events for existing catchment conditions,
Use the hydrologic/hydraulic models to assess various climate change scenarios,
including application of the NSW Government’s sea level rise benchmarks,
Assess the potential increase in storm surge as a result of climate change and its impact
on elevated ocean levels,
Review the potential impact of climate change on the local wind/wave climate as this
affects the extent of wave runup on the foreshore,
Assess the hydraulic and hazard categories for existing and climate change conditions.
This report details the results and findings of the above investigations. The key elements
include:
a summary of available historical flood related data,
establishment of the hydrologic and hydraulic models,
calibration of the hydrologic and hydraulic models,
definition of the design flood behaviour for existing catchment conditions,
sensitivity analysis of the design flood behaviour,
assessment of the impacts of climate change on the still water and wave runup water
levels
re-definition of the flood extent and hydraulic and hazard categories mapping for existing
and climate change conditions.
A Flood Study is a technical document and not easily understood by the general public. A
glossary of flood related terms is provided in Appendix A to assist. If more explanation of terms
or a better understanding of the approach is required, type “NSW Government Floodplain
Development Manual” into an internet search engine and you will be directed to the NSW
Government web site which provides a copy of this manual and further explanation.
Flood levels given in this report relate only to the water level with the lake itself. Design water
levels in the creek systems entering the lake (Cockle Creek, Dora Creek etc.) will be higher than
those shown for the lake.

Tags: Lake Macquarie, hydraulic model, hydrologic model
Organization: Data.NSW
Burrill Lake Floodplain Risk Management Study and Plan

This report documents the Burrill Lake Floodplain Risk Management Study and Plan which investigates and presents a flood risk management strategy for the catchment.
The study identifies the existing flooding characteristics and canvasses various
measures to mitigate the effects of flooding. The end product is the Floodplain
Management Plan, which describes how flood liable lands within the Burrill Lake
catchment are to be managed in the future.

Organization: Shoalhaven City Council
Erina Creek Flood Study Review

The 32km2 Erina Creek catchment is one of the major tributaries entering Brisbane Water at East Gosford (Figure 1). Figure 2 shows a digital terrain image of the study area and Figures 3 to 5 show further detail of the study area. Figure 6 indicates the current land use zones.

The Erina Creek Flood Study Review 1990 was completed in 1991 (Reference 1), which utilised information available and current at the time hydrologic and hydraulic models to produce design flood profiles along the lower parts of Erina Creek. The aim of the present study is to update the Erina Creek Flood Study Review 1990 with currently available data, notably the use of airborne laser scanning (ALS) data and more sophisticated hydraulic modelling techniques as well as verification to the June 2007 event.

All earlier flood studies of Erina Creek were superseded with completion of the Erina Creek Flood Study Review 1990.

WMAwater was engaged by Gosford City Council to undertake the Erina Creek Flood Study Review utilising current technology and data. The information and results obtained from the study will provide a basis for development of targeted stormwater management strategies and a subsequent Floodplain Risk Management Study and Plan.

The study was developed in order to meet the primary objective of defining the flood behaviour (50%, 20%, 10%, 5%, 2%, 1%, 0.5%, 0.2% AEP and the Probable Maximum Flood (PMF) design events) along the major tributaries in the Erina Creek catchment. The study area was significantly greater than for the previous 1991 Flood Study.

This report details the results and findings of the Flood Study investigations. The key elements include:
<ul>
<li>a summary of available historical flood related data,</li>
<li>discussion on the 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>
<li>sensitivity and climate change analysis.</li>
</ul>

Tags: Erina Creek, hydraulic model, hydrologic model
Organization: Central Coast Council
Davistown Catchment Flood Study

Volume 1 Report
This flood study has been undertaken to
determine the flood behaviour in the catchment due to local storm runoff for the 0.5%
Annual Exceedance Probability (AEP), 1% AEP, 2% AEP, 5% AEP, 10% AEP, 20% AEP,
50% AEP and 100% AEP flood events and the Probable Maximum Flood (PMF). In
accordance with its objectives, the study has determined the nature and extent of flooding
through the estimation of design flood flows, levels and velocities. Flood impacts due to
storm events in the Brisbane Water estuary are detailed in the Brisbane Water Foreshore
Flood Study (2009).
In undertaking the flood study, a hydrologic-hydraulic computer model of the major
channels and floodplain within the catchment was established and verified against historical
flood event observations. The hydraulic model was then used with design rainfall
conditions to simulate design flood behaviour in the catchment. The study has defined
Provisional Flood Hazard and Hydraulic Categories for the flood affected areas.

The objective of this Study is to define the nature of the existing flood behaviour due to
local runoff only in the Davistown catchment.

To achieve the objectives, the following tasks were undertaken:
<ul>
<li>Collate available flood-related data,</li>
<li>Define existing catchment condition flood behaviour for mainstream flooding in the
catchment,</li>
<li>Define design flood levels, velocities and flow distributions for the catchment,</li>
<li>Define the extent of flooding the nominated AEP events and PMF for the catchment,</li>
<li>Define the hydraulic categories for the flood-affected areas,</li>
<li>Define provisional flood hazard for the flood-affected areas,</li>
<li>Assess flood damages for the flood-affected areas.</li>
</ul>

Tags: Brisbane Waters, Davistown, hydraulic model, hydrologic model
Organization: Central Coast Council
Green Square Catchment Floodplain Risk Management Plan

The Green Square Floodplain Risk Management Plan has been prepared in accordance with
the NSW Floodplain Development Manual (April 2005) and:
Is based on a comprehensive and detailed evaluation of all factors that affect and are
affected by the use of flood prone land;
Represents the considered opinion of the local community on how to best manage its
flood risk and its flood prone land;
Provides a long-term path for the future development of the community.
All possible management measures were evaluated in the Floodplain Risk Management Study
(Reference 5) taking into account a range of parameters. This process eliminated a number of
measures including:
<ul>
<li>Flood mitigation dams (no available space in catchment). Note that these options are
distinct from detention basins which are proposed as part of the plan,</li>
<li>Levees, flood gates and pumps,</li>
<li>Flood warning (available warning time too short),</li>
<li>House raising (no suitable buildings), and
*Voluntary purchase.</li>
</ul>

The evaluation process for assessing each measure involved interaction with the Floodplain
Management Committee technical committee, the Floodplain Management Committee itself and
meetings with Council officers. The proposed measures identified as part of the present study
are described in Sections 0 to 5.5. Note that the various measures are presented in no
particular order within each priority group.

Catchment Description

Historically, the land use within the study area has been predominantly industrial and low density
commercial, with a pocket of residential area (mainly terraces) around Elizabeth Street
between Bourke Street and Joynton Avenue. In the last ten to fifteen years, a large proportion
of the catchment has been redeveloped into high density residential and mixed-use
development. The ACI glass factory site north of Lachlan Street and Victoria Park precinct have
been almost completely redeveloped, and similar re-development is planned for the Midblock,
GSTC precincts and the area south of Victoria Park between Joynton Avenue and Link Road.

The upper reaches of the catchment are flanked by open space areas within the Moore Park
and The Australian golf courses, and medium-density residential development east of South
Dowling Street within the Randwick LGA. There are also a number of smaller parks and private
open space areas throughout the catchment.
Drainage throughout much of the catchment is characterised by underground pipe systems and
overland flow conveyed along the roads, which are nearly entirely formed with kerbs and
gutters. Much of the Green Square catchment was developed between 1912-1920 and was
fully developed by the 1940s, with most of the subsurface drainage system in the Green Square
area estimated to have been constructed prior to the 1930s (Reference 4). Major changes since
1980 have included the re-development of industrial premises at Raleigh Park into medium
density residential estate and drainage works associated with the Eastern Distributor.

Tags: Green Square, Kensington
Organization: Council Of The City Of Sydney
Strathbogie Shire Grader Schedule 2025-2026

Strathbogie Shire Council Grading Rotation Schedule from 2025 to 2026

Although due care has been taken to ensure that this data is correct, no warranty is expressed or implied by the Strathbogie Shire Council in its use.

Tags: grader, schedule, strathbogie, strathbogie shire council
Organization: Strathbogie Shire Council
Green Square, West Kensington Floodplain Risk Management Study

FLOODPLAIN RISK MANAGEMENT STUDY

The specific aims of this study are to:
<ul>
<li>review the results from the Flood Study,</li>
<li>identify development and planning controls to regulate redevelopment in the flood
affected properties and to ensure that future redevelopment does not significantly
add to the overall potential damages,</li>
<li>make recommendations to adopt Flood Planning Levels (FPL) appropriate for the
catchment,</li>
<li>investigate available floodplain risk management measures along with
prioritisation, staging of works and preliminary costings.</li>
</ul>

The subsequent Floodplain Risk Management Plan will document the recommended strategies.

FLOODPLAIN RISK MANAGEMENT MEASURES

A list of all possible floodplain risk management measures which could be applied in the study
area were initially developed for consideration. The assessment extended to examination of
potential future development and its possible adverse impacts on flows and water quality. The
Green Square – West Kensington Floodplain Risk Management Study
measures were then assessed in terms of their suitability and effectiveness for reducing social,
ecological, environmental, cultural and economic impacts. As part of this process a number of
measures were identified as not being worthy of further consideration.

A summary of the various floodplain management measures considered during the course of the
study is presented in Table (i) together with a brief assessment of their viability for
implementation as part of the Floodplain Risk Management Plan for the Green Square – West
Kensington catchment.

RANDWICK CITY COUNCIL FINALISATION - October 13, 2011

It is necessary to note that the City Of Sydney is currently investigating floodplain
management measures for the Green Square Town Centre. This location is significantly
downstream from the Randwick City Council local government area and any resulting
amendments will not have any impacts on the Randwick City Council portion of the
catchment.

As such, this study is now finalised as it relates to the Randwick City Council local
government area. Details for the City of Sydney local government area are still in draft
form and should not be relied upon until finalised.

Tags: Green Square, West Kensington
Organization: Randwick City Council
Swaines Creek Flood Study report

<strong>Chapter 2</strong> contains background information including a brief description of the study catchment
and its drainage system, details of previous flooding investigations, a summary of community
consultation undertaken as part of this present study (refer Appendix A for details), and a brief
history of flooding within the catchment.

<strong>Chapter 3</strong> deals with the hydrology of the Lane Cove River and Swaines Creek catchments, and
describes the development of the RORB and DRAINS hydrologic models which were used to
generate discharge hydrographs for input to the hydraulic model.

<strong>Chapter 4</strong> deals with the development of the TUFLOW hydraulic model which was used to
analyse flood behaviour in the study area.

<strong>Chapter 5</strong> deals with the derivation of design discharge hydrographs, which involved the
determination of design storm rainfall depths over the catchments for a range of storm durations
and conversion of the rainfalls to discharge hydrographs.

<strong>Chapter 6</strong> details the results of the hydraulic modelling of the design floods. Results are
presented as water surface profiles and plans showing indicative extents of inundation for a
range of design flood events up to and including the PMF. A provisional assessment of flood
hazard and hydraulic categorisation is also presented. (The assessment of flood hazard
according to velocity and depth of floodwaters is necessarily “provisional”, pending a more
detailed assessment which includes other flood related criteria, to be undertaken during the future
FRMS.) The results of various sensitivity studies undertaken using the TUFLOW model are also
presented, including the effects of changes in hydraulic roughness, partial blockage of the piped
stormwater system, and potential increases in rainfall intensities and sea levels due to future
climate change. This chapter also deals with the selection of Interim FPL’s for the study area.

<strong>Chapter 7</strong> contains a list of references.

<strong>Chapter 8</strong> contains a list of flood-related terminology that is relevant to the scope of the study.

<strong>Appendix A</strong> provides details of the collection of historic flood data and describes the testing of
the hydrologic and hydraulic models.
Figures referred to in both the main report and the appendices are bound in a separate volume of
the report (refer <strong>Volume 2</strong>).

Tags: Lane Cove River, Swaines Creek, hydraulic model, hydrologic model
Organization: Willoughby City Council
The Villages of Crookwell, Gunning, Collector and Taralga Floodplain Risk Management Study and Draft Plan report

Upper Lachlan Shire Council (Council) commissioned the Floodplain Risk Management Study and Plan for the villages of Crookwell, Gunning, Collector and Taralga. The overall objectives of the Floodplain Risk Management Study (FRMS) were to assess the impacts of flooding, review existing Council policies as they relate to development of land in flood liable areas, consider options for the management of flood affected land and to develop a draft Floodplain Risk Management Plan (FRMP) which:

i) Proposes modifications to existing Council policies to ensure that the development of flood affected land is undertaken so as to be compatible with the flood hazard and risk.
ii) Proposes Flood Planning Levels for the various land uses in the floodplain.
iii) Sets out the recommended program of works and measures aimed at reducing over time, the social, environmental and economic impacts of flooding.
iv) Provides a program for implementation of the proposed works and measures. 

The FRMS focusses on Main Stream Flooding (MSF) from the Crookwell River and Kiamma Creek at Crookwell, Meadow Creek at Gunning, Collector Creek at Collector and Corroboree Creek at Taralga; Minor Tributary Flooding (MTF) caused by high flows in the minor un-named tributaries which drain to the aforementioned watercourses, and Major Overland Flow (MOF) areas which occur in the developed parts of the four villages.1 Flooding problems on the MOF paths arise from surcharges of the trunk drainage systems, which comprise a mix of natural depressions, pipes, culverts and open drains.

The solutions of problems resulting from surcharges of minor drainage lines in streets or in individual allotments remote from the MOF paths are matters for stormwater management by Council and are outside the scope of the present investigation.

Tags: Crookwell, Crookwell River, Gunning, Taralga, Upper Lachlan Shire, collector
Organization: Upper Lachlan Shire Council
Wagga Wagga Floodplain Risk Management Study - Report

Complete report

Tags: Braehour Gobbagombalin, Eunony Road, Gumly Gumly, Hampden Bridge, Kallewanda, Malebo Range, Murrumbidgee River, Sturt Highway, Wagga Wagga, Wiradjuri Bridge
Organization: Wagga Wagga City Council
Burradoo BU2 Catchment Assessment Study Stage 1 Flood Study Report

Objectives

The objective of this Study is to define the nature of the existing flood behaviour in the
Burradoo BU2 catchment.
To achieve the objective, the following tasks were undertaken:
<ul>
<li>Collate available flood-related data,</li>
<li>Define existing catchment condition flood behaviour for mainstream flooding in the
catchment,</li>
<li>Define design flood levels, velocities and flow distributions for the catchment,</li>
<li>Define the extent of flooding the 5 year, 20 year, 50 year, and 100 year ARI and PMF
events for the catchment,</li>
<li>Define provisional flood hazard for the flood-affected areas,</li>
<li>Define the hydraulic categories for the flood-affected areas,</li>
<li>Assess impacts of climate change,</li>
<li>Preliminary assessment of flood damages for the flood-affected areas,</li>
<li>Identify preliminary remedial options.</li>
</ul>

Methodology

This Study was carried out using computer-based hydrologic and hydraulic modelling.
Two numerical modelling tools were developed:
<ul>
<li>A hydrologic model was utilised to convert rainfall on the catchment to runoff. The
hydrologic model RAFTS was used, which combines rainfall information with local
catchment characteristics to estimate runoff hydrographs.</li>
<li>A hydraulic model was utilised to convert runoff hydrographs into water levels and
velocities in the study area. The model simulates the hydraulic behaviour of the water
within the study area by accounting for flow in the major channels as well as potential
overland flowpaths, which develop when the capacity of the channels is exceeded. It
relies on boundary conditions, which were the runoff hydrographs produced by the
hydrologic model and downstream boundary conditions from the creek into which it
discharges. The TUFLOW modelling system was used for this purpose.</li>
</ul>

The Study details are grouped together under the following sections of the report:
<ul>
<li><strong>Section 3</strong> provides a general description of the catchment</li>
<li>__ Section 4__ discusses the content and sources of relevant data, which were utilised for
the study. Historical rainfall and flood data used in the calibration of the established
hydrologic and hydraulic models and survey data used are detailed.</li>
<li><strong>Section 5</strong> discusses the catchment characteristics and describes the hydrologic model
setup for the study.</li>
<li><strong>Section 6</strong> describes the hydraulic model utilised for the study, its verification and
subsequent use for design rainfall events.</li>
<li><strong>Section 7</strong> details results for the design flood events.</li>
<li><strong>Section 8</strong> reviews the sensitivity of the model to the data used.</li>
<li><strong>Section 9</strong> identifies the provisional flood hazard.</li>
<li><strong>Section 10</strong> identifies the hydraulic categorisation.</li>
<li><strong>Section 11</strong> reviews the impacts of climate change.</li>
</ul>

Tags: Burradoo, hydraulic model, hydrologic model
Organization: Wingecarribee Shire Council
Post 2022 Event Flood Behaviour Analysis - Brunswick River Report

The Post 2022 Event Flood Behaviour Analysis - Brunswick River aims to understand the areas impacted by the recent 2022 flood event and determin the current approved flood model's ability to replicate the 2022 event. 

The study area includes the townships of Mullumbimby, Brunswick Heads, Ocean Shores, and villages of New Brighton, South Golden Beach and Billinudgel. The study area covers an area of approximately 230 square kilometres, and includes diverse environments, generally comprising of dense vegetation in the hinterlands and coastal villages to the east of the catchment. 

The Post 2022 Event Flood Behaviour Analysis of the Brunswick River involved a review of the hydrological and hydraulic models, and IFD estimates. Flood Frequency Analysis and Regional Flood Frequency Estimation methods were undertaken to assess the model perfomance.

A damage assessment was undertaken to determine the cost of damage and the degree of disruption to the community caused duing flooding event.

Tags: post flood event assessment
Organization: NSW Department of Climate Change, Energy, the Environment and Water