Water quality data was collected from rivers and streams from across New South Wales by the Office of Water. The data was generally collected to: assess ambient river water quality; determine temporal trends in river water; collect water quality characterisation measurements to assess compliance with guidelines and standards and monitoring of background water quality attributes, and provide high quality, long term, robust data with which to undertake trend and condition reporting.This data was utilised to assess water quality condition for State of the Catchment reporting. Water quality condition was described as the percentage of samples collected between July 2005 and June 2008 exceeding the upper ANZECC water quality guidelines for turbidity and total phosphorus in upland and lowland rivers (ANZECC and ARMCANZ. (2000). Australian and New Zealand Guidelines for Fresh and Marine Water Quality. Australian and New Zealand Environment and Conservation Council and Agriculture and Resource Management Council of Australia and New Zealand). The data from across NSW was compiled into report cards for each Catchment Management Autority and a technical support document. Technical Support Document - Riverine Ecosystems; NSW State of Catchments 2008. NSW Office of Water, NSW Department of Environment, Climate Change and Water, NSW Department of Industry and Investment.