Geohydrology of part of the Round Valley Indian Reservation, Mendocino County, California
Water-Resources Investigations Report
77-22
By: K. S. Muir and Dwight Albert Webster
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Abstract
The Round Valley Indian Reservation in northern California obtains most of its water from the ground-water reservoir. The ground-water reservoir is made up of continental deposits, alluvium, and stream-channel deposits ranging in age from Pliocene to Holocene. Most of the water is pumped from the alluvium. Most ground water (about 20,000 acre-feet or 25 cubic hectometers per year) is derived from stream seepage. Natural discharge (discharge to streams, evapotranspiration, and underflow) has averaged about 21,000 acre-feet per year. Pumping and flow from artesian wells has averaged about 2,750 acre-feet per year. Ground water occurs in both confined and unconfined aquifers. The ground-water reservoir is full, and about 230,000 acre-feet of water is stored in the depth interval 10-200 feet. The water is chemically and biologically suitable for domestic or irrigation use, although hardness is high for domestic use and, locally, dissolved iron is a problem. There is potential for developing additional ground-water supplies. (Woodard-USGS)
Suggested Citation
Muir, K.S., Webster, D.A., 1977, Geohydrology of part of the Round Valley Indian Reservation, Mendocino County, California: U.S. Geological Survey Water-Resources Investigations Report 77-22, vi, 40 p. :ill., map ;27 cm., https://doi.org/10.3133/wri7722.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geohydrology of part of the Round Valley Indian Reservation, Mendocino County, California |
| Series title | Water-Resources Investigations Report |
| Series number | 77-22 |
| DOI | 10.3133/wri7722 |
| Year Published | 1977 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, Water Resources Division, |
| Description | vi, 40 p. :ill., map ;27 cm. |