Ancillary Hydrology Points for NSW Water Management

NSW Water Theme - Ancillary Hydro Point data from Spatial Services (DCS) represents locations with unique hydrology characteristics or that monitor stream flow. It includes point features such as bores, locks, rapids, springs, tidal limit markers, and waterfalls. The dataset is hosted as a feature service scheduled for retirement from GDA94, with a transition to a GDA2020 service underway.

Use Cases

• Mapping the distribution of water extraction points like bores and springs for groundwater studies.
• Analyzing the location of flow control features such as locks and waterfalls for river management.
• Identifying tidal limit markers to model estuarine boundaries and saltwater intrusion.
• Validating hydrological network integrity by checking for ancillary point features like rapids.

Strengths

• Dataset includes multiple distinct feature classes (Bore, Lock, Rapids, Spring, Tidal Limit Marker, Waterfall) for analysis.
• Provides direct API and export access via the NSW Spatial Services portal.

Limitations

• Spatial reference is WGS 84 aligned to GDA94, which may cause misalignment in modern GDA2020 coordinate systems.
• The specific number of point features (rows) and attribute columns is not disclosed in the provided metadata.
• Dataset is marked as retiring, indicating potential future access issues or need for migration.

Provenance

Source

Spatial Services, Department of Customer Service (DCS), New South Wales Government.

Collection Method

Collected and maintained as part of the NSW Water Theme for cartographic and hydrological integrity.

Freshness

Last metadata update was 2026-04-08, but the service is scheduled for retirement.

Geography

State of New South Wales, Australia.