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SES - NSW State Emergency Service NSW Government - Office of Environment and Heritage

NSW Flood Data Portal

Flood study

Powells Creek Flood Study

BACKGROUND Powells Creek is a small southern tributary of the Parramatta River and Saleyards Creek is the major tributary of Powells Creek (Figure 1). The total catchment area of Powells Creek to Homebush Bay Drive is 8.1 km2 and Saleyards Creek to the confluence with Powells Creek is 3.2 km2.

The Powells Creek catchment is located in Sydney’s Inner West region, approximately 12 kilometres west of the CBD. The catchment includes the suburbs (or parts) of Burwood, Concord West, Homebush, Homebush West, North Strathfield, Strathfield and Rookwood (cemetery). Approximately 77% of the catchment is within the Strathfield Municipal Council (SMC) local government area (LGA), 15% is within City of Canada Bay Council, 5% is within Burwood Council LGA and 3% (Rookwood cemetery) within Auburn LGA. Saleyards Creek is predominantly within the SMC LGA apart from Rookwood cemetery.

The Powells Creek catchment drains to Homebush Bay on the Parramatta River via an open channel and a series of inlet pits and pipes. Sydney Water Corporation (SWC) owns the larger “trunk” drainage assets including the open channel and the smaller pipe and pit networks are owned by the various councils.

The current study concerns the part of the Burwood LGA within the Powells Creek catchment.

OBJECTIVES The purpose of this Flood Study is to identify mainstream and overland flow flooding (where there is no defined channel) in order to define the existing flood liability within the catchment. This objective is achieved through the development of a suitable hydrologic and hydraulic modelling platform that can subsequently be used as the basis for a future Floodplain Risk Management Study and Plan for the study area, and to assist Council when undertaking flood-related planning decisions for existing and future developments.

The primary objectives of the study are to: • prepare suitable models of the catchment and floodplain for use in subsequent detailed overland flow studies and a Floodplain Risk Management Study; • provide results for flood behaviour in terms of design flood levels, depths, velocities, flows and flood extents within the study area; • prepare maps of provisional hydraulic categories and provisional hazard categories; and • assess the sensitivity of flood behaviour to potential climate change effects such as increases in rainfall intensities and sea level rise.

Additional Information

Field Value
Title Powells Creek Flood Study
Commission Date 1 October 2014
Publication Date 3 September 2019
Themes Land and Resource Management
Spatial Extent
Map data © OpenStreetMap contributors
Council/LGA Burwood Council
Author/ Prepared by WMA Water
Publish date 4 September 2020
Update date 10 May 2021
River Basin 213 - Sydney Coast and Georges River
Approval State Approved
Submitted for approval 10 May 2021
Submitted by SES System Administrator
Approved 10 May 2021
Approved by dstazic
Identifier f8685967-23b6-4d48-8409-ba4552967550