Water

Sub-Theme

Hydrological Obstructions

Theme 
Water
Aggregator 
Geoscience Australia

Hydrological obstructions are man-made features that impact the water network either by obstruction, diversion or storage of water

National Datasets in this Sub-Theme

National Hydrographic Obstructions

Purpose

Hydrological barrier is topologically consistent feature in hydrological network. Hydrological Crossing points are critical in the identification of obstructions, diversion and storage water for the hydrological enforcement of elevation models

Dataset Uses

Government agencies use this data to better manage water resources. The Australian Hydrological Geospatial fabric (Geofabric) is released through the Bureau of Meteorology which provides a framework for discovering, querying, reporting and modelling water information aligned with the definitions under the Water Act 2007 .

Government agencies use this data to

  • manage assets that interact with the water network
  • identify assets that cross waterways
  • plan for funding of maintenance of those assets

Standards and Specifications

AS1199.0-2003 Sampling procedures for inspection by attributes
AS4590:2006 Interchange of client information
ISO19100 series Geographic information
Open Geospatial Consortium (OGC) Web Feature Service (WFS) Implementation Specification 1.1.0 (OGC Document No. 04-094)
Open Geospatial Consortium (OGC) Web Map Service (WMS) Implementation Specification 1.3.0 (OGC Document No. 06-042)

Access and Licensing

Creative Commons Attribution 4.0

Quality

The hydrological obstructions dataset provides a topological connection of linear and points features which interact with the hydrological network. The linear and point features are man-made structures which may obstruct or divert stream flow.

Data is maintained through numerous sources including satellite imagery, aerial photography, field work, information gathered from relevant stakeholders, custodians and by data verification and testing. Revision material has also been gathered from a variety of authoritative sources.

Spatial accuracy position of the feature instance will be within 0.5mm at map scale for 90% of the well-defined points.

That is:

  • 1:25 000 = 12.5 m
  • 1:50 000 = 25 m
  • 1:100 000 = 50 m
  • 1:250 000 = 125 m

The Dataset includes a unique spatial identifier for each feature. The identifier will be used to maintain the dataset and to incorporate higher resolution datasets in the future.

Current Status

The aggregation of jurisdictional data is maintained by Geoscience Australia. A mixture of scale exists ranging from 1:25 000 to 1:250 000 across the continent.

The Bureau of Meteorology is the custodian of the suite of products to meet the requirements of the National Water Account under the Water Act 2007 and Water Regulations 2008 .

Future Status

Short term objectives include:

  • Fully aggregate all jurisdictional data into a national dataset which provides a complete and consistent representation of the national surface hydrology network
  • Improve accuracy and quality information

Long term objectives include:

  • Continued spatial upgrades of all surface hydrology data using current and higher resolution imagery

Key Users

Key users of the national catchments are Commonwealth, State, Territory and Local governments and the Research and Industry sectors.

Version

1.00

Details