Note: Surf Your Watershed was recently decommissioned. EPA is working on a replacement application. We will direct users to that application when it becomes available.

Ground shaking is the most powerful predictor of damage from an earthquake. The U.S. Geological Survey (USGS) National Seismic Hazard Map shows the strength of ground shaking that has a 1 in 50 chance of being exceeded in a particular place in the lower 48 states over a period of 50 years. These maps are used in determining building seismic codes, insurance rates, and other public decisions.

The National Renewable Energy Laboratory's (NREL) map of current and planned geothermal power production by state shows the nameplate capacity, the maximum manufacturer-rated output of a generator in megawatts, for geothermal energy in each state as of February 2015 (for more detailed and up-to-date information on geothermal energy development in the U.S., visit NREL's Geothermal Prospector web app). The numbers in white show the current installed capacity, while the numbers in yellow show the planned additions.

The National Renewable Energy Laboratory's (NREL) map of potential geothermal resources across the U.S. shows the potential for development of deep enhanced geothermal systems (EGS), as well as identified hydrothermal resources. Color shading shows the potential for deep enhanced geothermal systems, or systems which use technology that is currently being developed to extract energy from dry rocks deep below the surface.