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NSW Flood Data Portal

Floodplain Risk Management Study

Floodplain Management Study Spring Street Drain, Muddy Creek and Scarborough Ponds

The valley of Muddy Creek where it passes through Rockdale is potentially at hazard from flooding, even though there have not been any major floods for a number of years. Significant recent floods were in 1975, 1983, 1993 and 1998.

Rockdale City Council, through the Rockdale Floodplain and Stormwater Management Committee, is developing a floodplain management strategy and plan for the Muddy Creek floodplain in Rockdale.

The Muddy Creek stormwater channel extends from Kogarah through the Main Southern Railway viaduct, through the centre of Rockdale and downstream to beyond Bestic Street. The study also includes Spring Street Drain, which is a tributary of Muddy Creek, and the adjacent Scarborough Ponds catchment. The study also considers the full range of flooding issues including some local stormwater drainage, but it does not consider stormwater quality.

The floodplain which this study covers, extends to the estimated limit of the Probable Maximum Flood (PMF) This study uses an extreme flood which, for all practicable purposes is equal to the PMF. The study area is shown in Figure 1 in the report.

Historical data is assembled and modelling. A one-dimensional hydrodynamic model was used by AWACS to derive design flood levels along Muddy Creek. The model used MIKE-11 software from DHI. This software is a well known and recognised program which is widely used for flood modelling.

Additional Information

Field Value
Title Floodplain Management Study Spring Street Drain, Muddy Creek and Scarborough Ponds
Publication Date 1 January 2000
Themes Land and Resource Management
Spatial Extent
Map data © OpenStreetMap contributors
Council/LGA Bayside Council
Author/ Prepared by Willing & Partners Pty Ltd
Publish date 6 July 2017
Update date 26 July 2017
River Basin 213 - Sydney Coast and Georges River
Place Name Rockdale
Approval State Approved
Submitted for approval 6 July 2017
Submitted by John Silk
Approved 26 July 2017
Approved by plattns
Data Comment

Report only; no other data. Legacy data; may have been superseded.

Identifier a7694bdf-d527-4399-825e-69d1b66588e6