Special Water Supply Catchment Areas with Updated Boundaries from 1992

From 1992 onward, this dataset maps Special Water Supply Catchment Areas in Australia, reflecting legislative terminology and boundary updates. It is maintained by the Department of Energy, Environment and Climate Action and was last fully released in September 2023. The data is available in multiple geospatial formats including SHP, GDB, and WMS.

Use Cases

• Map and analyze protected water catchment boundaries for land-use planning based on the declared area data.
• Conduct spatial analysis for environmental impact assessments based on the geospatial catchment area layer.
• Update legacy systems with the revised legislative terminology (SWSCA) and boundaries based on the 2021 and 2023 edits.
• Integrate catchment area data into hydrological models based on the provided geospatial formats.

Strengths

• Provides a long-term record with a base layer from 1 January 1992.
• Includes updates from November 2021 and a full release in September 2023, indicating maintenance.
• Available in 9 different geospatial file formats, enhancing tool compatibility.

Limitations

• 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 Energy, Environment and Climate Action (data.gov.au)

Collection Method

Based on the PWSC100/SWSCA100 government geospatial layer, edited for declaration boundaries.

Time Range

From 1992 onward

Freshness

Last updated 2026-04-08 22:33:11.352779; freshness should be verified.

Geography

Australia (specific regions covered by the declaration boundaries)