Drainage Pit Locations in Western Australia Metropolitan Region

Drainage pits within the Metropolitan Region of Western Australia, including street gullies, side entry pits, and gross pollutant traps. The dataset contains attributes for Pit_No, Asset_Owner, Road_No, Asset_Status, Data_Status, Pit_Type, FSL, Depth, Mapping_Comments, and Confidence_Rating. It is provided by Main Roads Western Australia and was last updated in March 2026.

Use Cases

• Map drainage infrastructure by Pit_Type and Asset_Owner for asset management planning.
• Analyze the distribution of Asset_Status (Operational/Non-operational) across Road_No segments.
• Assess data quality by filtering features based on the Data_Status and Confidence_Rating attributes.
• Calculate average Depth or FSL (Finished Surface Level) values for different Pit_Type categories.

Strengths

• Includes multiple specific pit types such as street gullies, side entry pits, soak wells, junction pits, and gross pollutant traps.
• Provides a detailed data dictionary with 10 defined attribute fields for each feature.
• Dataset is recent, with a last update timestamp in March 2026.

Limitations

• The data provider explicitly warns that the information may be inaccurate, incomplete, or out-of-date and is for reference only.
• The Asset_Owner attribute is noted as potentially inaccurate and should not be used as a definitive source.
• The Confidence_Rating is an estimated rating only, indicating potential label noise or uncertainty in spatial accuracy.

Provenance

Source

Main Roads Western Australia.

Collection Method

Field survey and desktop capture, as indicated by the Data_Status attribute.

Time Range

null

Freshness

Last updated 2026-03-24.

Geography

Metropolitan Region of Western Australia.