Tweed flood map check

Tweed Shire Council publishes its own flood mapping, and the Site Checker reads it for any Tweed address. The checker reads the design flood and probable maximum flood mapping applied by Section A3 of its development control plan, Development of Flood Liable Land.

Type an address below to see what each map says about the block, with its source and date.

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Is my Tweed property flood affected?

A Tweed property is flood affected for planning when any part of it is in the design flood or probable maximum flood mapping that Section A3 of Tweed Shire Council's development control plan applies. The Site Checker above reads the council's layers, the NSW Planning Portal map and the NSW SES extents, and shows each answer separately. The official answer is still Tweed Shire Council's, and the questions below explain how to get it.

Where is the Tweed Shire Council flood map?

Tweed Shire Council's DCP Section A3 mapping system is linked from its property flood reports page. Its flood studies page covers the Tweed Valley Flood Study update and expansion, the Tweed Coastal Creeks study update, the Tweed Heads South levee and drainage study, and Burringbar and Crabbes Creeks.

Which Tweed Shire Council flood layers does the Site Checker read?

The mapping is drawn from the Tweed Valley Flood Study 2009 and the Coastal Creeks Flood Study 2010. Neither layer names its study or a date in its data, so a reading from them names none.

The checker asks 2 layers: Design Flood Inundation Areas and PMF Inundation Areas. Every one answered a test query on 17 September 2026. Tweed also publishes newer adopted 2025 flood data with a flood planning level and a high hazard layer, but its description says the raw data is not to be given to customers, so it is not read without the council's agreement. Level contours, a climate change scenario to 2100 and a high flow map are also left out.

What is the design flood in the Tweed?

It is the flood Tweed Shire Council's DCP Section A3 plans development around, mapped from the 2009 and 2010 studies, and the checker reads it as the council's 1% AEP extent. 1% AEP means a flood with a 1 in 100 chance of being reached or exceeded in any year. The probable maximum flood reaches further, to the largest flood that could reasonably occur.

How do I get a flood certificate from Tweed Shire Council?

Tweed Shire Council issues Property Flood Reports, but its property flood reports page says they are temporarily unavailable while it updates the system. In the meantime it points to the DCP Section A3 mapping system, or you can contact the council by phone or at tsc@tweed.nsw.gov.au.

Why does the Tweed Shire Council map differ from the state map?

They are drawn by different bodies for different jobs. The NSW SES Flood Database compiles flood extents from studies across the state, while Tweed Shire Council's map is the one its planning controls are written against, and a flood planning area usually sits above the 1% AEP extent because it adds freeboard. A withdrawn LEP flood map on the Planning Portal shows as a former map with its date, never as a current control. The checker never merges the sources into one verdict, and where they disagree, Tweed Shire Council settles it.

What else do people ask?

Does the Tweed flood map show how deep the water would get?

No. An extent says whether land is inside a modelled flood, not how deep or fast the water is. Flood levels in metres AHD (height above average sea level) come from Tweed Shire Council, through a Property Flood Report, once they are available again.

If my Tweed block is outside the mapped area, can it still flood?

Yes. The Tweed mapping the checker reads comes from the 2009 and 2010 studies; the council's newer 2025 data is not read, so the two can differ. Land outside every map can still flood from overland flow no study has modelled, and a council can apply flood controls to land its published map does not show.

Is this the same as a section 10.7 planning certificate?

No. Tweed Shire Council's section 10.7 planning certificate is the formal statement of the controls on a lot, including whether flood related development controls apply. Order one through Tweed Shire Council conveyancing applications.

Where does this information come from?

This page and the Site Checker are general information from published maps, not a flood certificate, a section 10.7 planning certificate or a survey. They do not replace advice from the council, your certifier, an engineer, a lawyer or your own designer. Check any decision to buy or build against the council's own documents.