Central Coast flood map check

Central Coast Council publishes its own flood mapping, and the Site Checker reads it for any Central Coast address. Its maps cover four flood precincts, the 1 in 100 year flood extent and hazard bands from H1 to H6, with separate hazard mapping for Brisbane Water and the Tuggerah Lakes.

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

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Is my Central Coast property flood affected?

A Central Coast property is flood affected for planning when any part of it sits in one of Central Coast Council's four flood precincts, which run from the probable maximum flood (Precinct 1) to high hazard land (Precinct 4). 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 Central Coast Council's, and the questions below explain how to get it.

Where is the Central Coast Council flood map?

Central Coast Council's flood layers are in its online mapping tool, linked from its flood risk tools page. The studies behind them, from Avoca Lagoon and Cockrone Lagoon to Erina Creek and the Northern Lakes, are listed on its floodplain risk management studies and plans page.

Which Central Coast Council flood layers does the Site Checker read?

The four precincts are Precinct 1, the probable maximum flood; Precinct 2, the flood planning areas; Precinct 3, flood storage; and Precinct 4, high hazard. Most polygons name their waterway and their study, such as the Wyong River Catchment Floodplain Risk Management Study and Plan 2019.

The checker asks 9 layers: Precinct 2: Flood Planning Areas; Precinct 1: Probable Maximum Flood; Precinct 3: Flood Storage; Precinct 4: High Hazard; 1 in 100 year flood extents; 1% AEP hazard H1 to H6, Brisbane Water; 1% AEP hazard H1 to H6, estimated; 1% AEP hazard H1 to H6, flood studies; and 1% AEP hazard H1 to H6, Tuggerah Lakes. Every one answered a test query on 17 September 2026.

What does a flood planning area mean on the Central Coast?

It is the land where Central Coast Council's flood related development controls apply, mapped as Precinct 2. It is generally the land at or below the flood planning level, the 1% AEP flood level plus a safety margin called freeboard. 1% AEP means a flood with a 1 in 100 chance of being reached or exceeded in any year. The council supplies the level for a lot through its flood information certificate.

How do I get a flood certificate from Central Coast Council?

Apply for a Flood Information Certificate, which Central Coast Council describes as the way to obtain the minimum floor level and flood level for a property. Apply online through the council's eServices once you register an account, or lodge the paper form at a Customer Service Centre or by post. The council says flood information will generally not be given over the phone. Start at its flood information application page.

Why does the Central Coast 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 Central Coast 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, Central Coast Council settles it.

What else do people ask?

Does the Central Coast 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 Central Coast Council, through its Flood Information Certificate.

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

Yes. Central Coast Council's precincts and hazard bands cover the land its studies modelled, and a study covers named waterways such as the lagoons, the lakes and their creeks, not every street drain. 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. Central Coast 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 Central Coast Council online services.

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.