Access API
NSW Water Theme -
Hydro Line
Please Note
WGS 84 = GDA94 service
This dataset has a spatial reference of [WGS 84 = GDA94] and can NOT be easily consumed into GDA2020 environments. A similar service with a ‘multiCRS’ suffix is available which can support GDA2020, GDA94 and WGS84 = GDA2020 environments. In due course, and allowing time for user feedback and testing, it is intended that these original services will adopt the new multiCRS functionally.
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.
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
