Floodplain Special Development Condition Areas for Fitzroy and Murray Rivers

Polygon data identifies existing residential developments in defined floodways where building controls are recommended for house extensions, redevelopment, and fencing. The dataset is produced by the Department of Water and Environmental Regulation and covers specific areas including the Fitzroy River at Fitzroy Crossing and the Murray River/Peel Inlet. It is part of a 12-layer floodplain mapping system for floodplain management planning.

Use Cases

• Identify residential developments within the Special Development Condition Area polygon layer to assess flood risk for building permit applications.
• Analyze spatial overlap between floodway polygons and existing housing for floodplain management planning.
• Integrate this polygon layer with other floodplain dataset layers, such as FPM Flood Level Contours and FPM 1 in 100 AEP Floodway and Flood Fringe Area, for comprehensive flood hazard assessment.

Strengths

• Dataset is part of a structured 12-layer floodplain mapping system with a defined loading order for full scope analysis.
• Provides specific geographic coverage for the Fitzroy River and Murray River/Peel Inlet areas.
• Based on the 1 in 100 Annual Exceedance Probability (AEP) standard adopted for floodplain management in Australia.

Limitations

• Data scope is limited to major river flooding and does not address stormwater drainage or environmental considerations.
• Sample data and specific row/column counts are unavailable, limiting preliminary assessment of data structure and volume.

Provenance

Source

Department of Water and Environmental Regulation, Geospatial and Data Services Manager.

Collection Method

Floodplain mapping produced by the department for development advice.

Time Range

null

Freshness

Last updated March 2026.

Geography

Fitzroy River – Fitzroy Crossing Townsite; Murray River/Peel Inlet - Ballee, Yunderup and Cooleenup Islands, Culleenup Road and Pericho Close.