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.
Phase 2 is available as a National dataset based on 1:250,000 scale mapped features and the 9 second digital elevation model (DEM) and comprises the following 6 products:
Geofabric Surface Cartography
Cartographic representation of surface hydrological features
Geofabric Surface Network
Network representation of hydrological features
Geofabric Surface Catchments
Catchment boundaries derived from the 9 second Digital Elevation Model
Geofabric Groundwater Cartography
Cartographic representation of groundwater hydrology features
Geofabric Hydrology Reporting Catchments
Contracted nodes, contracted catchments and node-link network
Geofabric Hydrology Reporting Regions
Reporting regions based on aggregations of contracted catchments.
Phase 3 data is now being iteratively released by drainage division and is based on improved scales of mapped features and the 1 second DEM. Five Products are included in Phase 3 drainage division releases, with the removal of the Groundwater Cartography product, which will be included when a fully national Phase 3 Geofabric product is completed.