The Bureau of Meteorology (the Bureau) is building the Australian Water Resources Information System (AWRIS) to deliver high quality water information essential to managing our Nation's valuable water resources.
The system will be spatially enabled using the Australian Hydrological Geospatial Fabric (or Geofabric), a spatial framework for discovering, querying, reporting and modelling water information.
The Geofabric is a specialised Geographic Information System (GIS) that registers the spatial relationships between important hydrologic features such as rivers, dams, lakes, aquifers, diversions, drains and monitoring points.
By detailing the spatial dimensions of these hydrofeatures and how they are connected, we are able to see how water is stored, transported and used through the landscape.
Contracted nodes - the enduring nature of the Geofabric is based on a set of
points called contracted nodes that represent known features in the landscape such as the confluence of two major rivers. These points have a permanent identifier that will persist through subsequent versions of the Geofabric and will become the framework of the Geofabric through space and time. Each of the 'contracted node' features has an associated contracted catchment.
Delivery phases - the Geofabric will evolve through phases over the next 10 years. The first version as available in the second half of 2010. Subsequent versions, with enhanced data and functionality, will follow annually.
Geofabric Phase 1 products are:
Geofabric Surface Hydrology Cartography 1:250,000 scale (Version 1) - This product is based on the hydrological component of Geoscience Australia GEODATA 1:250,000. It includes flow directed water course lines, water bodies, springs, cliffs and canals. In addition, it includes a set of contracted nodes which are a subset of stream outflow nodes and their associated
unique, persistent identifiers. This product is intended to be used for feature identification, visualisation and mapping.
Geofabric Surface Hydrology Network 1:250,000 scale (Version 1) - this product is based on the drainage enforced GEODATA 9 second DEM Version 3 and its associated flow direction grid to produce a fully connected and directed stream network. The product also contains contracted nodes and is intended to be used for flow tracing and network analysis. It can also be
used to select related water bodies, catchments and equivalent
mapped stream network entities in the surface hydrology cartographic product.
Geofabric 9 second Catchments and Derived Contracted Catchments 1:250,000 scale (Version 1) - This product is based on the drainage enforced GEODATA 9 second DEM version 3 and its associated flow direction
grid, to produce a hierarchy of catchments that aggregate to12 Drainage Divisions (Level 1) and nest down to a catchment for every stream segment mapped within the Geofabric. The contracted catchments are groups of catchments that have a contracted node at their outflow. This product is intended to be used for hydrologic modelling and water resource reporting.
Research partnerships - the Australian Hydrological Geospatial Fabric project is being led by the Bureau of Meteorology in partnership with
Geoscience Australia, the Australian National University and
CSIRO. The partnership provides a collaborative mechanism for obtaining foundation hydrological data, maintaining and upgrading this data and improving the product suite over time. These activities are guided by industry best practice, then tested and made operational through research
and development.
For more information on the Geofabric please see http://www.bom.gov.au/water/geofabric/index.shtml
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