Flood Screening
Which flood sources show flooding at your address, and which ones cover it at all.
All sources are independent — a positive from one confirms or contradicts another
What This Check Looks At
The maps and satellite records are checked at your exact point; river gauges are the nearest one to it. A source that does not cover your area is reported as not covering it, never as clear.
Government flood planning overlay
Whether the land is in a flood planning area on the NSW Government's planning flood layer. Not every council has published to it.
Council flood study depth
Where we hold a council's flood study, the modelled water depth or level at your point in a 1-in-100-year flood. We hold a small number of these.
Mapped 2022 floods
Whether your point was inside the flooded area mapped from satellite in the February-March, July or October 2022 floods. These maps cover only the areas mapped at the time.
Satellite water history
How often surface water has been seen at your point in decades of Landsat satellite passes.
River gauge history
The nearest Bureau of Meteorology river gauge: how far away, and when it last recorded a major flood.
Ground elevation
Ground height from the NSW Government elevation model, used with a council study to turn a flood level into a depth.
How It Works
Your address is turned into a point; the maps and satellite records are checked at that point, and the nearest river gauge is looked up. The result is one of five levels: none, low, moderate, elevated, or not enough data. Not enough data means the planning overlay did not answer or does not cover the area and we hold no council study for it; that is never shown as clear. This is a screening check, not a flood certificate: ask your council for a Section 10.7 certificate.