This layer shows the areas of the USGS 1:100,000 quadrangle boundary maps that are within the watershed boundaries of the Russian River basin. This shapefile contains the boundaries of the 100k quadrangles of California to be used for geographic reference. Circuit Rider Productions and National Oceanic and Atmospheric Administration (2002). 1:100,000 Quadrangle Polygon Boundaries: Russian River Watershed, California, 1996. Circuit Rider Productions. Available at: http://purl.stanford.edu/fp756wn9369 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.