We have released a new GDA2020 version of our Foundational Spatial Data Framework (FSDF) datasets which replaces the current GDA94 version. This updated service aligns our spatial data with the national standard, improving accuracy, consistency, and compatibility with modern positioning technologies.

The previous service will remain available during the transition period as GDA94 services are retired, but users are encouraged to move to the new GDA2020 service as soon as practical.

Metadata Portal Metadata Information

Content Title	Hydro Line - NSW Water Theme - GDA2020 Service
Content Type	Hosted Feature Layer
Description	NSW Hydro Line defines the centreline of a water course. It includes features such as natural water course, canal-drain, race, spill way and tunnel-siphen. It includes key attributes such as hydro line name, perennially and flow direction. Features within the Hydro Line class include: Watercourse Natural Watercourse - A naturally formed watercourse. This line feature dataset is part of the Topographic database. Canal-Drain - An artificial (built) watercourse to convey water and/or to allow transportation upon. This line feature dataset is part of the Topographic database. Watercourse Centre Line Spillway - A constructed path or channel for excess water to pass over or beside a dam. This line feature dataset is part of the Topographic database. Tunnel-Siphen - An underground watercourse conveying water that has direct association with the hydrographic network. Also included are siphens which is a man-made or natural conduit in the form of an inverted U shape and filled until gravitational force or atmospheric pressure is sufficient to force water in one end of the pipe and out the other end thus conducting water beneath a depressed place. Connector Connector - A line used maintain continuity of a watercourse where that watercourse is not physically evident. This line feature dataset is part of the digital Topographic database. Water security is one of Australia’s major challenges. 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.
Initial Publication Date	06/02/2020
Data Currency	01/01/3000
Data Update Frequency	Other
Content Source	Data provider files
File Type	ESRI File Geodatabase (*.gdb)
Attribution	© State of New South Wales (Spatial Services, a business unit of the Department of Customer Service NSW). For current information go to spatial.nsw.gov.au
Data Theme, Classification or Relationship to other Datasets	NSW Water Theme of the Foundation Spatial Data Framework (FSDF)
Accuracy	This dataset was captured by utilising the best available source 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 to upgrade the spatial location and accuracy of data is ongoing.
Spatial Reference System (dataset)	GDA94
Spatial Reference System (web service)	EPSG:7844
WGS84 Equivalent To	GDA2020
Spatial Extent	Full State
Content Lineage	For additional information, please contact us via the Spatial Services Customer Hub
Data Classification	Unclassified
Data Access Policy	Open
Data Quality	For additional information, please contact us via the Spatial Services Customer Hub
Terms and Conditions	Creative Commons
Standard and Specification	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.
Data Custodian	DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795
Point of Contact	Please contact us via the Spatial Services Customer Hub
Data Aggregator	DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795
Data Distributor	DCS Spatial Services 346 Panorama Ave Bathurst NSW 2795
Additional Supporting Information	Data Dictionaries
TRIM Number