Drainage Sump Locations in Western Australia Metropolitan Region

Drainage sump locations within the Metropolitan Region of Western Australia, showing retaining walls at stormwater pipe inlets or outlets. The dataset includes attributes for asset ownership, maintenance responsibility, and mapping comments, provided by Main Roads Western Australia for informational reference.

Use Cases

• Map sump locations and their associated Road_No for infrastructure inventory and spatial analysis.
• Analyze Owner and Maintained_By attributes to identify responsibility boundaries between Main Roads WA and other organizations.
• Use Mapping_Comments and SUMP_NO fields to audit asset data quality and verify assumptions on-site.

Strengths

• Includes explicit data fields for ownership (Owner) and maintenance responsibility (Maintained_By).
• Covers the Metropolitan Region of Western Australia, providing localized geographic coverage.
• Available in multiple geospatial formats including GEOJSON, KML, and CSV for interoperability.

Limitations

• Data is provided for information only and may be inaccurate, incomplete, or out-of-date, requiring on-site verification.
• Owner and Maintained_By attributes are noted as potentially inaccurate and not a source of truth.
• Includes 'Ghost' structures where the asset type is unknown, indicating gaps in data completeness.

Provenance

Source

Main Roads Western Australia

Collection Method

Surveyed and maintained by road authority, includes interfacing structures from other asset owners.

Time Range

null

Freshness

Last updated March 2026.

Geography

Metropolitan Region of Western Australia