Floodplain Development Control Areas for 1% Annual Exceedance Probability

Polygon areas show land where development controls are applied to ensure flood protection for proposed development in Western Australia. The Department of Water and Environmental Regulation produced this mapping, which covers over 25 specific river systems and townsites. It is part of a 12-layer floodplain mapping system requiring specific loading order.

Use Cases

• Identify land parcels within the 'FPM 1 in 100 (1%) AEP Floodplain Development Control Area' for regulatory planning and permitting.
• Cross-reference development control areas with other layers like 'FPM Flood Level Contours (m AHD)' using the 'STRATEGY' field links for comprehensive flood risk assessment.
• Analyze spatial distribution of controlled areas across listed townsites such as Bunbury, Geraldton, and Carnarvon for regional hazard zoning.

Strengths

• Covers over 25 distinct geographic areas including major rivers and townsites in Western Australia.
• Integrates with a defined 12-layer floodplain mapping system for contextual analysis.
• Provides direct links to strategy diagrams and notes via the 'STRATEGY' attribute field.

Limitations

• Limited to major river flooding; excludes stormwater drainage and environmental considerations.
• No flooding information is provided for areas outside the defined development control polygons.
• Sample data and structural details like row/column counts are unavailable for preview.

Provenance

Source

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

Collection Method

Floodplain mapping of rivers and major watercourses for development advice.

Time Range

null

Freshness

Updated March 2026.

Geography

Western Australia, covering specific river systems and townsites listed (e.g., Avon River, Blackwood River, Bunbury, Geraldton, Carnarvon).