U.S. Geothermal Potential for select States – Washington could be 4.8%
Posted on December 19th, 2007 by Lawrence Molloy
The U.S. Geothermal Developable Resource Estimate from the Western Governor’s Assessment. Washington State is at 4.8%. Some geothermal engineers believe that the precipitation and biomass of the western slope of the Cascades may mask the surface hydrothermal waters which indicate a higher resource below.

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