Pacific water data

The rivers of Australia and New Zealand dataset is derived from the World Wildlife Fund's (WWF) HydroSHEDS drainage direction layer and a stream network layer. The source of the drainage direction layer was the 15-second Digital Elevation Model (DEM) from NASA's Shuttle Radar Topographic Mission (SRTM). The raster stream network was determined by using the HydroSHEDS flow accumulation grid, with a threshold of about 1000 km² upstream area. The stream network dataset consists of the following information: the origin node of each arc in the network (FROM_NODE), the destination of each arc in the network (TO_NODE), the Strahler stream order of each arc in the network (STRAHLER), numerical code and name of the major basin that the arc falls within (MAJ_BAS and MAJ_NAME); - area of the major basin in square km that the arc falls within (MAJ_AREA); - numerical code and name of the sub-basin that the arc falls within (SUB_BAS and SUB_NAME); - area of the sub-basin in square km that the arc falls within (SUB_AREA); - numerical code of the sub-basin towards which the sub-basin flows that the arc falls within (TO_SUBBAS) (the codes -888 and -999 have been assigned respectively to internal sub-basins and to sub-basins draining into the sea). The attributes table now includes a field named "Regime" with tentative classification of perennial ("P") and intermittent ("I") streams. **Data publication:** 2014-03-05 **Supplemental Information:** This dataset is developed as part of a GIS-based information system on water resources for Australia and New Zealand. It has been published in the framework of the AQUASTAT - programme of the Land and Water Division of the Food and Agriculture Organization of the United Nations. **Contact points:** Resource Contact: [Jippe Hoogeveen](mailto:Jippe.Hoogeveen@fao.org) Resource Contact: [Livia Peiser](mailto:Livia.Peiser@fao.org) Metadata Contact: [AQUASTAT](mailto:aquastat@fao.org) **Data lineage:** The linework of the map was obtained by converting the stream network to a feature dataset with the Hydrology toolset in ESRI ArcGIS.The Flow Direction and Stream Order grids were derived from hydrologically corrected elevation data with a resolution of 15 arc-seconds.The elevation dataset was part of a mapping product, HydroSHEDS, developed by the Conservation Science Program of World Wildlife Fund.Original input data had been obtained during NASA's Shuttle Radar Topography Mission (SRTM). **Resource constraints:** This work is made available under the Creative Commons Attribution 4.0 International license (CC-BY-4.0) **Online resources:** Download - Rivers in Australia and New Zealand (ESRI shapefile) Technical information on the data source More updated information on HydroSHEDS 2025