Ground water in the Long Meadow area and its relation with that in the General Sherman Tree area, Sequoia National Park, California

Westward movement of ground water from the Long Meadow area of Sequoia National Park, California, to the General Sherman Tree area is prevented by an eastward hydraulic gradient and low fracture permeability of a granodiorite ridge separating the two areas. Clay beds present in the alluvium in the Long Meadow area would hinder, but not preclude, recharge to the ground-water system beneath Long Meadow from streams.

A dependable ground-water supply of about 50 gallons per minute (72,000 gallons per day) can be developed from the Long Meadow area. The withdrawal of this quantity of ground water from the Long Meadow area should not affect ground or surface water in the General Sherman Tree area.