About the Geofabric

The enduring nature of the Geofabric is based on a set of contracted nodes (points) which represent important hydrological features in the landscape.

These points have a permanent identifier included in all versions of the Geofabric, and provide a persistent framework through space and time.

A subset of the contracted nodes is used to create a simplified node-link network with associated contracted catchments.

Our Information Sheet offers an overview of the Geofabric.(312Kb).

Version 3.2 is available as a National dataset based on improved scales of mapped features and the 1 second digital elevation model (DEM), and comprises the following 5 products:

  1. Geofabric Surface Cartography
    Cartographic representation of surface hydrological features, based on best available mapped features, approximating 1:100,000 scale.

  2. Geofabric Surface Network
    Network representation of hydrological features, including over 2.5 million stream segments and 6000 gauging stations, which can be used with the Geofabric Toolset.

  3. Geofabric Surface Catchments
    Catchment boundaries derived from the 1 second Digital Elevation Model, with ~7 million base level catchments.

  4. Geofabric Hydrology Reporting Catchments
    Contracted nodes, contracted catchments and node-link network, including contracted nodes that represent important gauging stations.

  5. Geofabric Hydrology Reporting Regions
    Reporting regions based on aggregations of contracted catchments, similar to 1997 Australian Water Resource Council (AWRC) boundaries.

The next V3.3 release will realise a full suite of 6 products, with the inclusion of an updated Groundwater Cartography product, planned for release mid 2021.

National version 2.1.1 is still available based on 1:250,000 scale mapped features and the 9 second digital elevation model (DEM), comprising 6 products, including Groundwater Cartography.


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