FPM Flood Level Contours: Floodplain Mapping for Western Australian Rivers and Townsites

Flood level contours for eight different flood event probabilities, produced by the Department of Water and Environmental Regulation. The dataset describes how flood levels vary across floodplains for events ranging from a 10% to a 0.2% Annual Exceedance Probability, referenced to the Australian Height Datum. It covers specific rivers and townsites in Western Australia, including the Swan, Avon, Collie, and Fitzroy Rivers.

Use Cases

• Model flood risk for infrastructure planning based on the eight defined Annual Exceedance Probability (AEP) contours.
• Assess development compliance by comparing proposed building elevations against designated flood event level contours.
• Create flood hazard maps for specific Western Australian townsites listed in the dataset description.
• Analyze the spatial variation of flood levels across a floodplain for different magnitude events.

Strengths

• Contains eight distinct flood event contours, from 1 in 10 (10% AEP) to 1 in 500 (0.2% AEP) probability.
• Covers multiple specific geographic areas in Western Australia, including the Swan River area around Perth and several other rivers and townsites.
• Data is part of a larger, structured floodplain mapping framework comprising 12 related dataset layers.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Department of Water and Environmental Regulation (Western Australia)

Collection Method

Produced by the department for floodplain mapping and development advice.

Freshness

Last updated 2026-06-29 07:55:04.425442; freshness should be verified.

Geography

Western Australia, covering specific rivers and townsites including Avon River (Brookton), Collie River (Collie), Fitzroy River (Fitzroy Crossing), Gascoyne River (Carnarvon), Greenough River, Katanning Townsite, Lower Collie River (Greater Bunbury), Preston River (Donnybrook), Serpentine/Peel/Murray Rivers (Peel region), and Swan/Canning Rivers (Perth).