Skip to main content
SES - NSW State Emergency Service NSW Government - Office of Environment and Heritage

NSW Flood Data Portal

This flood project has been superseded.
Flood study

Mullet & Brooks Creeks Flood Study

Mullet Creek drains a relatively small catchment of 74.48 square kilometres. The creek rises at the escarpment (often sandstone cliffs) at an elevation of about 600m AHD and flows a distance of about 22 kilometres before reaching the tidal Lake Illawarra. The headwaters are very steep – the elevation falls from a maximum of 600m AHD to 50m AHD in the foothills only 2.5 kilometres further east. These steep catchment conditions provide for dynamic flooding and geomorphic conditions in the catchment. The floodplain near Lake Illawarra is broad and flat, extending up to 2.8 kilometres in width.

This report will form a component of the Floodplain Risk Management Study Report (FPRMS). This report is a stand-alone document that, amongst other things, contains inputs for the Floodplain Risk Management Study Report. This flood study report is a technical document designed to describe the development and simulation of the hydrologic and hydraulic models and present the simulation results for the calibration and design events with existing (predevelopment conditions). The FPRMS report will assess management options and estimate Flood Planning Levels and strategies for future development in the catchment.

Additional Information

Field Value
Title Mullet & Brooks Creeks Flood Study
River Basin 214 - Wollongong
Publication Date 1 March 2010
Themes Land and Resource Management
Spatial Extent
© OpenStreetMap contributors
Council/LGA Wollongong City Council
Author/ Prepared by BMT WBM
Publish date 13 June 2019
Update date 28 June 2019
Approval State Approved
Submitted for approval 13 June 2019
Submitted by Akhil Sud
Approved 28 June 2019
Approved by dstazic
Identifier 164999f8-494e-4ded-b30e-40f4a0a6962e