Lake Tributary Flood Studies

Let’s thrive in Lake Mac and continue building a resilient City by planning for flood risks. We have adopted six flood studies and floodplain risk management studies and plans with the help of our community. Now it is time to study the eight tributary catchments across Lake Mac to inform risk management plans protecting residents and property.

The tributary catchments include:

1. Plains Gully Creek at Swansea and Caves Beach

2. Sheppards Creek at Croudace Bay and Valentine

3. Muraban Creek at Floraville and Belmont North

4. Mills Gully Creek at Belmont and Valentine

5. Fullers Creek and Freshwater Creek at Bonnells Bay

6. Mannering Creek, Swampy Creek and Wyee Creek at Wyee

7. Postmistress Creek at Sunshine and Morisset East

8. Puntei Creek at Carey Bay

If you are a resident within the study areas, we need your help. Please provide any information on flood history in your area, including photographs, personal recollections or flood marks. Share your information and upload your photos via our quick survey or our interactive map before Friday 17 April. Stay up to date with the project by joining our eNewsletter - subscribe below.

We’ve appointed WMAwater, a specialist consultancy in flood models and floodplain management, to carry out the eight flood studies. The studies will be undertaken in accordance with the NSW Government's April 2005 Floodplain Development Manual and other related guidelines. The project is scheduled for completion later this year.

Let’s thrive in Lake Mac and continue building a resilient City by planning for flood risks. We have adopted six flood studies and floodplain risk management studies and plans with the help of our community. Now it is time to study the eight tributary catchments across Lake Mac to inform risk management plans protecting residents and property.

The tributary catchments include:

1. Plains Gully Creek at Swansea and Caves Beach

2. Sheppards Creek at Croudace Bay and Valentine

3. Muraban Creek at Floraville and Belmont North

4. Mills Gully Creek at Belmont and Valentine

5. Fullers Creek and Freshwater Creek at Bonnells Bay

6. Mannering Creek, Swampy Creek and Wyee Creek at Wyee

7. Postmistress Creek at Sunshine and Morisset East

8. Puntei Creek at Carey Bay

If you are a resident within the study areas, we need your help. Please provide any information on flood history in your area, including photographs, personal recollections or flood marks. Share your information and upload your photos via our quick survey or our interactive map before Friday 17 April. Stay up to date with the project by joining our eNewsletter - subscribe below.

We’ve appointed WMAwater, a specialist consultancy in flood models and floodplain management, to carry out the eight flood studies. The studies will be undertaken in accordance with the NSW Government's April 2005 Floodplain Development Manual and other related guidelines. The project is scheduled for completion later this year.

  • Plains Gully Creek at Swansea and Caves Beach

    about 2 months ago

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is a small catchment located at Caves Beach and draining into Black Ned’s Bay. Nuisance flooding has been recorded at the downstream end but projected sea level rise (exacerbated by localised flooding) may be an issue at Bowman Street where the Plains Gully Creek flows into Black Ned’s Bay. To...

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is a small catchment located at Caves Beach and draining into Black Ned’s Bay. Nuisance flooding has been recorded at the downstream end but projected sea level rise (exacerbated by localised flooding) may be an issue at Bowman Street where the Plains Gully Creek flows into Black Ned’s Bay. To get the right information to help develop the flood study and future flood risk management study and plan, we need your help.

    Your flooding history will help inform our flood study and help protect your homes and local area. Complete a short survey or visit our interactive map and share your experiences and photos, before Monday 13 April.

    Thank you for your contribution! Find out more or speak to the consultant about your experience, contact WMAwater on 02 9299 2855 or lakemac@wmawater.com.au.

  • Sheppards Creek at Croudace Bay and Valentine

    about 2 months ago

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is a small catchment with a history of flooding downstream of Macquarie Drive at Valentine. We recorded flood levels in this area for the 1949, 2007 and 2015 flood events which were affected by flooding from the lake. To get the right information to help develop...

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is a small catchment with a history of flooding downstream of Macquarie Drive at Valentine. We recorded flood levels in this area for the 1949, 2007 and 2015 flood events which were affected by flooding from the lake. To get the right information to help develop the flood study and future flood risk management study and plan, we need your help.

    Your flooding history will help inform our flood study and help protect your homes and local area. Complete a short survey or visit our interactive map and share your experiences and photos, before Monday 13 April.

    Thank you for your contribution! Find out more or speak to the consultant about your experience, contact WMAwater on 02 9299 2855 or lakemac@wmawater.com.au.

  • Muraban Creek at Floraville and Belmont North

    about 2 months ago

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is in a high residential area with some growth potential. We have some previous flood history but need your help to get the right information about flooding events to develop the flood study and future flood risk management study and plan.

    Your flooding history will help inform...

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is in a high residential area with some growth potential. We have some previous flood history but need your help to get the right information about flooding events to develop the flood study and future flood risk management study and plan.

    Your flooding history will help inform our flood study and help protect your homes and local area. Complete a short survey or visit our interactive map and share your experiences and photos, before Monday 13 April.

    Thank you for your contribution! Find out more or speak to the consultant about your experience, contact WMAwater on 02 9299 2855 or lakemac@wmawater.com.au.

  • Mills Gully Creek at Belmont and Valentine

    about 2 months ago

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is in a high residential area with growth potential. To get the right information to help develop the flood study and future flood risk management study and plan, we need your help.

    Your flooding history will help inform our flood study and help protect your homes and local area. Complete...

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is in a high residential area with growth potential. To get the right information to help develop the flood study and future flood risk management study and plan, we need your help.

    Your flooding history will help inform our flood study and help protect your homes and local area. Complete a short survey or visit our interactive map and share your experiences and photos, before Monday 13 April.

    Thank you for your contribution! Find out more or speak to the consultant about your experience, contact WMAwater on 02 9299 2855 or lakemac@wmawater.com.au.

  • Fullers Creek and Freshwater Creek at Bonnells Bay

    about 1 month ago


    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is close to residential areas with high growth potential. We have limited historic flood data available and need your help to get the right information to develop the flood study and future flood risk management study and plan.

    Your flooding history will help inform our flood study and help protect...


    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is close to residential areas with high growth potential. We have limited historic flood data available and need your help to get the right information to develop the flood study and future flood risk management study and plan.

    Your flooding history will help inform our flood study and help protect your homes and local area. Complete a short survey or visit our interactive map and share your experiences and photos, before Monday 13 April.

    Thank you for your contribution! Find out more or speak to the consultant about your experience, contact WMAwater on 02 9299 2855 or lakemac@wmawater.com.au.

  • Mannering Creek, Swampy Creek and Wyee Creek at Wyee

    about 2 months ago

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is in an area with growth potential. We have some previous flood history but need your help to get the right information about flooding events to develop the flood study and future flood risk management study and plan.

    Your flooding history will help inform...

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is in an area with growth potential. We have some previous flood history but need your help to get the right information about flooding events to develop the flood study and future flood risk management study and plan.

    Your flooding history will help inform our flood study and help protect your homes and local area. Complete a short survey or visit our interactive map and share your experiences and photos, before Monday 13 April.

    Thank you for your contribution! Find out more or speak to the consultant about your experience, contact WMAwater on 02 9299 2855 or lakemac@wmawater.com.au.

  • Postmistress Creek at Sunshine and Morisset East

    about 1 month ago

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is in an area with growth potential. We have some previous flood history but need your help to get the right information about flooding events to develop the flood study and future flood risk management study and plan.

    Your flooding history will help inform...

    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is in an area with growth potential. We have some previous flood history but need your help to get the right information about flooding events to develop the flood study and future flood risk management study and plan.

    Your flooding history will help inform our flood study and help protect your homes and local area. Complete a short survey or visit our interactive map and share your experiences and photos, before Monday 13 April.

    Thank you for your contribution! Find out more or speak to the consultant about your experience, contact WMAwater on 02 9299 2855 or lakemac@wmawater.com.au.

  • Puntei Creek at Carey Bay

    about 2 months ago


    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is close to residential properties and the lake which can be more prone to flooding. We have some previous flood history from 1990 and 2007 but need your help to get the right information about these and other events to develop the flood study and future flood risk management study...


    Is your house within the study area boundary? Do you use any assets, parks or schools in the study area? If so please tell us about your flooding experiences. Even if you haven't had trouble with flooding, we are interested in the whole picture.

    Right now, we recognise this tributary is close to residential properties and the lake which can be more prone to flooding. We have some previous flood history from 1990 and 2007 but need your help to get the right information about these and other events to develop the flood study and future flood risk management study and plan.

    Your flooding history will help inform our flood study and help protect your homes and local area. Complete a short survey or visit our interactive map and share your experiences and photos, before Monday 13 April.

    Thank you for your contribution! Find out more or speak to the consultant about your experience, contact WMAwater on 02 9299 2855 or lakemac@wmawater.com.au.