Description: The 'streamflow average' map shows how much streamflow has occurred in the streams, rivers or creeks for the long-term period and area chosen. Streamflow is the measured volume of water in streams, rivers, creeks or other channels in time and at a certain location. Streamflow time series data are collected from approximately 3500 measurement stations across Australia are included in this analysis. However only a subset of these stations will be shown for the long-term streamflow analysis, as there are less gauging stations available that contain long-term time series.The monthly and annual 'streamflow total' maps are based on the daily streamflow data generated as per streamflow data provided to the Bureau of Meteorology. The maps show the streamflow quantities across Australia in the form of a point data set representing the values for gauging stations. Each point represents a gauging station value expressed as the average flow per day within a chosen period.Annual and monthly long-term maps (July–June) are based on the reference period (July 1975 – June 2014). The 1975 was chosen as a starting period given a good coverage of streamflow gauging stations across the country.The colours are graded to represent different amounts of streamflow from light blue (small amounts of average streamflow) to dark blue (high streamflow amounts).
Copyright Text: Bureau of Meteorology. Streamflow data as provided by lead water organisations and agencies around the country. Material (pages, documents, online graphs) on this website is subject to copyright. The processed data from Regional Water Information can be used under a Creative Commons Licence as detailed on the Bureau's website at www.bom.gov.au/other/copyright.shtml. The terms and conditions of the relevant CC licenses are at http://creativecommons.org/licenses/by/3.0/au/.
Description: The GEODATA TOPO 5M 2004 product is a national seamless data product aimed at regional or national applications. It is a vector representation of the Australian landscape as represented on the Geoscience Australia 1:5M general reference maps and is suitable for GIS applications. The data has been derived from GEODATA TOPO 250K Series 2 data where it was available (else GEODATA TOPO 250K Series 1) and has double precision accuracy. The product consists of eleven data layers, including: built-up areas; contours; drainage; framework; localities; offshore; rail transport; road transport; sand ridges; spot heights; and waterbodies.
Copyright Text: Commonwealth of Australia (Geoscience Australia)