Towradgi Creek Catchment

A Flood Study, Floodplain Risk Management Study and Floodplain Risk Management Plan for this catchment were completed in 2003. This was followed by a review of the flood study in 2015.

When Council’s Conduit Blockage Policy was updated in 2016, the Flood Study (2015) was revised to take into account this Policy and recent development in the area. This revised Flood Study (2019) provides the most up-to-date information on flooding for the catchment, and supersedes the 2003 and 2015 Studies.

The 2003 Floodplain Risk Management Study and Plan is currently being reviewed to take into account the outcomes of the revised Flood Study (2019).

The above completed studies can be found in the Documents section of this page.

All studies have been jointly funded by Council and the NSW Government.

Planning matrix

We’ve added a matrix for the Towradgi Creek Catchment into Chapter E13 of the Wollongong Development Control Plan PDF, 1824.81 KB. This helps people understand flood risks when they’re planning new development in the area.

Railway Street culvert  works

We prepared designs to replace two pipes between Memorial Drive and 29 Railway Street, Corrimal, with a larger culvert. A cost estimate for this work was much higher than the expected benefits, so this work is not going ahead. However, we’re investigating other options to reduce the impact of flooding in this area.

North Corrimal Creek

We looked at options to improve the flow of water  and reduce flooding in North Corrimal Creek downstream (south) of Railway Street, Corrimal. A detailed design is being made for the preferred option.

Railway Street Debris Control Structure

We've installed a debris control structure and finished channel works on North Corrimal Creek, immediately upstream (on the western side) of the culverts near Memorial Drive and Railway Street.

Colgong Crescent Footbridge

We replaced the footbridge over Towradgi Creek between Colgong Cresent, Towradgi, and Linga Street, East Corrimal. The new bridge is higher to improve the flow of water and reduce the amount of debris trapped under the bridge.

Tarrawanna Flood Mitigation Work

We’ve finished multiple works in Tarrawanna to improve water flow and reduce blockages from debris. This included:

• Culvert improvements in Justine Avenue
• Cutting an opening in the wall at the rear of 2 Bellambi Street to reduce the likelihood of damage from floods
• Creating a low earth mound at Cheryl Place to direct floodwater away from houses.

Lemrac Avenue Flood Mitigation Works

These works to reduce the impact of floodwaters along Lemrac Avenue south of the intersection with Willow Grove, Corrimal, included:

• Installing flood-proof walls on the boundaries of several properties to limit damage by water and debris
• Installing a debris trap and reshaping the creek
• Installing a trash rack at the inlet of the Lemrac Avenue culvert to reduce the chance of blockages.

Underwood Street Flood Mitigation Works

We’ve identified a need for multiple flood mitigation works along North Corrimal Creek between Underwood Street, Corrimal, and the area downstream of the Princes Highway.  More investigation and an upgrade to the current underground drainage system is needed before we can do these works.

Voluntary Purchase

Nine properties in this catchment were earmarked for a voluntary purchase scheme. Three of these properties on Pioneer Road, Towradgi, have already been purchased and cleared by Council.

You can help our research and planning for floods in this catchment by sharing your past experiences.

If you have photos or other information about flooding on your property, please email us or post information to the mailing address in the footer of this page.