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    This is a map of EPA Landcover/Landuse in the Sulphur Creek sub-basin, based on a 1992 Landsat TM satellite image.  Conifers cover many of the north-facing slopes. 
 The rest of the sub-basin is a mix of conifers, hardwoods, grasslands, and herbaceous vegetation.  Grazing is the only significant agricultural activity in the sub-basin.  
Although there is almost no residential development in the sub-basin, one of the major human land-uses in upper Big Sulphur and Squaw Creeks is the Geysers 
geothermal field.  Data were provided by the U.S. Environmental Protection Agency.  
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