Why do more hydrothermal resources exist in the western regions of the united states?

Why do more hydrothermal resources exist in the western regions of the United States?

There are more hydrothermal resources in the Western regions of the United States because the there are temperatures hot enough to be useful as a geothermal resource located at depths too far below the surface. This is why this area became a prime target for the development of geothermal energy resources.

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The reason why more hydrothermal resources exist in western regions of the united states is because : Lack of groundwater and extended drought has reduced number of vents. 
That's why to fulfill its their daily water consumption, they need to rely on hydrothermal resources

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B. to study the spatial patterning of forests and forests fires and plan for better use of fire fighting resources in the u.s.

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.