Nepean River Floodplain Risk Management Study and Plan

PUBLIC EXHIBITION

Camden Council completed the Nepean River Flood Study in 2015 and has now prepared a Nepean River Floodplain Risk Management Study and Plan as required by the State Government.

This process included the review of existing flooding behaviours and associated hazards before investigating mitigation options to reduce flood damage and risk. Development of a Floodplain Risk Management Study and Plan provides a sound basis upon which Council can make decisions about undertaking works, making planning decisions and developing response arrangements to reduce the impact of flooding for the Nepean River catchment within the Camden local government area.

The Nepean River Floodplain Risk Management Study and Plan is now publicly exhibited, and Camden Council seeks feedback from the community to ensure it reflects recent observations and experiences during heavy rainfall and flooding.

BACKGROUND

The Nepean River Floodplain Risk Management Study covers an area from Spring Farm to Cobbitty including the suburbs of Spring Farm, Camden South, Cawdor, Grasmere, Camden, Ellis Lane, Kirkham, Cobbitty and part Elderslie, Narellan, Harrington Park and Bringelly.

The Nepean River catchment is subject to mainstream riverine flooding, local catchment tributary flooding and overland flows. The latest Nepean River Flood Risk Management Study and Plan has been expanded to include additional tributaries of the Nepean River including Narellan Creek, Navigation Creek, Matahil Creek (East and West), Sickles Creek, Cobbitty Creek, and Bringelly Creek. The Narellan Creek Flood Study (2017) has also been updated as part of Floodplain Risk Management Plan preparation.

Exhibition period: 21 July to 11.59pm Friday 26 August 2022 (extended from 18 August 2022).

Exhibition items: Review the documents, maps and more provided in the Document Library on this page.

Share your thoughts

Submissions can be made up to 11.59pm Friday 26 August 2022 (extended from 18 August 2022).

Share your thoughts using any of the following methods:

using the online submission form (below) ↓
by post to Floodplain Management Team, Camden Council, PO Box 183 Camden NSW 2570
hand delivered during business hours to Council’s Administration Building, 70 Central Avenue, Oran Park NSW 2570
via email to mail@camden.nsw.gov.au

Adopted Documents

A number of changes were made to the following documents after considering submissions received during the public exhibition period.

These were endorsed by Camden Council at the Council meeting on 14 February 2023.

Nepean River Floodplain Risk Management Study and Plan:

Nepean River FRMSP Report including Narellan Creek (PDF 3.1MB)

Appendix K:

Final Nepean River FRMSP - Appendix K (PDF 2.3MB)

Submissions:

Exhibited Documents

Large files are hosted on the NSW Flood Data Portal of NSW State Emergency Service (SES) under Camden Council organisation.

We have segmented some documents shown below to provide smaller sized parts.

Nepean River Floodplain Risk Management Study and Plan:

Nepean River FRMSP Report including Narellan Creek (PDF 7MB)

Appendix A:

Post Event Analysis Nepean River (PDF 361KB)

Appendix B: Nepean River FRMSP Flood Behaviour

Nepean FRMSP Flood Behaviour - full document (PDF 300MB)
Segment 1 (PDF 20MB)
Segment 2 (PDF 19MB)
Segment 3 (PDF 20MB)
Segment 4 (PDF 19MB)
Segment 5 (PDF 20MB)
Segment 6 (PDF 20MB)
Segment 7 (PDF 20MB)
Segment 8 (PDF 20MB)
Segment 9 (PDF 20MB)
Segment 10 (PDF 20MB)
Segment 11 (PDF 20MB)
Segment 12 (PDF 19MB)
Segment 13 (PDF 20MB)
Segment 14 (PDF 19MB)
Segment 15 (PDF 20MB)
Segment 16 (PDF 15MB)

Appendix C:

Australian Rainfall and Runoff (ARR) 2016 Assessment (PDF 2MB)

Appendix D:

Located within the Nepean River FRMSP Report including Narellan Creek (pages 131 – 146).

Appendix E:

Development Controls (PDF 6.5MB)

Appendix F:

On-site Detention (OSD) Guide (PDF 1MB)

Appendix G:

Flood Modification Options (PDF 6MB)

Appendix H:

Options Assessment Results (PDF 40MB)

Appendix I:

Option Costings (PDF 252KB)

Appendix J:

Multi Criteria Assessment (PDF 116KB)

Narellan Creek Flood Study

Update of Narellan Creek Flood Study - Report (PDF 160MB)
Investigation & Design Harrington Park Mitigation Works_Stage I & II - Final Draft Report (PDF 23MB)
Vegetation Management Plan – Narellan Creek proposed spillway channel (PDF 5MB)

Animation for Probable Maximum Flood event

Animation for 1 in 100 year event

Learn more

All of the draft plans can be downloaded using the links in the Document Library or printed copies can be viewed at the:

Customer Service Centre, 70 Central Avenue, Oran Park;
Oran Park Library, 72 Central Avenue, Oran Park;
Camden Library, 40 John Street, Camden; and
Narellan Library, corner Queen and Elyard Streets, Narellan.

If you have any questions please send an email to floodplains@camden.nsw.gov.au or call 02 4654 7777 and ask for the Floodplain Management Team.

For translation assistance please contact the Australian Government Translating and Interpreting Service on 131 450 and ask them to ring Camden Council on 02 4654 7777.

For hearing or speech assistance please contact the National Relay Service at relayservice.gov.au and provide them with the Camden Council contact number 02 4654 7777.