NSW Named Watercourse defines the centreline of a named water course as a single feature. It is an aggregation of Hydro Line parts.

Key users of the hydrology data are NSW State and Local Government agencies as well as Federal Government agencies. These bodies use this data to better manage State and Local Government assets.

This hydrology data provides the NSW component of the Australian Hydrological Geospatial Fabric which is a critical input to the Australian Water Resources Information System.

More widespread use of the hydrology data is also found in emergency management response and recovery efforts, hazard mitigation or disaster risk reduction, climate change, natural resource assessment, environmental planning and monitoring, insurance, mining and agriculture.

Spatial Services continuously updates this theme with information sourced from relevant stakeholders and custodians; by data verification from other internal and external databases; research and through Spatial Services’ regular cycle of updating from aerial imagery and elevation data.

Metadata

Type	Esri Feature Service
Update Frequency	As required
Contact Details	Contact us via the Spatial Services Customer Hub
Relationship to Themes and Datasets	NSW Water Theme of the Foundation Spatial Data Framework (FSDF)
Accuracy	The dataset maintains a positional relationship to, and alignment with, the Lot and Property digital datasets. This dataset was captured by digitising the best available cadastral mapping at a variety of scales and accuracies, ranging from 1:500 to 1:250 000 according to the National Mapping Council of Australia, Standards of Map Accuracy (1975). Therefore, the position of the feature instance will be within 0.5mm at map scale for 90% of the well-defined points. That is, 1:500 = 0.25m, 1:2000 = 1m, 1:4000 = 2m, 1:25000 = 12.5m, 1:50000 = 25m and 1:100000 = 50m. A program of positional upgrade (accuracy improvement) is currently underway.
Spatial Reference System (dataset)	Geocentric Datum of Australia 1994 (GDA94), Australian Height Datum (AHD)
Spatial Reference System    (web service)	EPSG 4326: WGS84 Geographic 2D
WGS84 Equivalent To	GDA94
Spatial Extent	Full state
Standards and Specifications	Open Geospatial Consortium (OGC) implemented and compatible for consumption by common GIS platforms. Available as either cache or non-cache, depending on client use or requirement.
Distributors	Service Delivery, DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795
Dataset Producers and Contributors	Environmental Spatial Programs, DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795