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    This is a map of the 1:100,000 scale U.S. Geologic Survey hydrography in the Geyserville sub-basin, displayed with a Digital Elevation Model (DEM) showing the 
topography of the landscape.  The long valley surrounding the mainstem Russian River is the Alexander Valley.  Many of the streams in the sub-basin are small, with the 
exception of the Maacama Creek watershed (not labeled on this map), located in the eastern quarter of the sub-basin.  The small valley in eastern part of the Maacama 
watershed is Knights Valley.  Mount Saint Helen, located northeast of Knights Valley at the far eastern edge of the sub-basin, is approximately 1400 meters high and is 
the highest point in the Russian River watershed.  Data were contributed by the U.S. Geological Survey and the California Department of Forestry.  
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