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

NSW Flood Data Portal

Flood study

HEWITTS CREEK FLOOD STUDY December 2019

The study area is located within the Wollongong City Council Local Government Area (LGA) and incorporates Slacky, Tramway, Woodlands, Hewitts and Thomas Gibson Creeks. The combined catchment is approximately 7.5km2 and incorporates the northern Wollongong suburbs of Bulli and Thirroul. The catchment extends from the Illawarra Escarpment in the west, discharging into the Thirroul and Sandon Point Beaches in the east.

Following the completion of the 2015 Flood Study Review, Council developed a revised Conduit Blockage Policy in 2016. The 2015 Flood Study Review was based on Council’s previous Conduit Blockage Policy (2002) as documented in Council’s 2009 Development Control Plan.

This report provides an addendum to the 2015 Flood Study Review and outlines the revised design flood behaviour considering Council’s Revised blockage policy, in addition to catchment changes since 2015 and recommendations coming out of review of the models.

Additional Information

Field Value
Title HEWITTS CREEK FLOOD STUDY December 2019
Publication Date 1 December 2019
Themes Land and Resource Management
Spatial Extent
Map data © OpenStreetMap contributors
Council/LGA Wollongong City Council
Author/ Prepared by Erin Askew
Publish date 27 February 2020
Update date 1 May 2020
River Basin 214 - Wollongong
Place Name Bulli
Approval State Approved
Submitted for approval 1 May 2020
Submitted by SES System Administrator
Approved 1 May 2020
Approved by ses-sysadmin
Identifier 6af24591-081d-4e75-acd4-e8da0fe5353d