Water temperature results described in this report represent the largest number of sites (68) and annual datasets (171) ever described for the Scott River watershed. Review of the Scott River watershed climate, topography, vegetation, channel geomorphology, and hydrology data suggests that six distinct hydrological and geological sub-basins exist including the East and West Headwaters, Valley, Eastside and Westside Mountains, and the Canyon. MWAT water temperatures recorded between 1995 and 2000 in all geomorphic sub-basins fall within the historical range of temperatures recorded in the Scott River watershed since 1951.