Publication Citation

USGS Series Circular
Report Number 1186
Title Sustainability of ground-water resources
Edition -
Language ENGLISH
Author(s) Alley, William M.; Reilly, Thomas E.; Franke, O. Lehn
Year 1999
Originating office
USGS Library Call Number (200) Ci no.1186
Physical description v, 79 p. :col. ill., col. maps ;28 cm.
ISBN

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Abstract

The pumpage of fresh ground water in the United States in 1995 was estimated to be approximately 77 billion gallons per day (Solley and others, 1998), which is about 8 percent of the estimated 1 trillion gallons per day of natural recharge to the Nation's ground-water systems (Nace, 1960). From an overall national perspective, the ground-water resource appears ample. Locally, however, the availability of ground water varies widely. Moreover, only a part of the ground water stored in the subsurface can be recovered by wells in an economic manner and without adverse consequences.