Ground-water hydrology of Pahvant Valley and adjacent areas, Utah
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Abstract
The primary ground-water reservoir in Pahvant Valley and adjacent areas is in the unconsolidated basin fill and interbedded basalt. Recharge in 1959 was estimated to be about 70,000 acre-feet per year and was mostly by seepage from streams, canals, and unconsumed irrigation water and by infiltration of precipitation. Discharge in 1959 was estimated to be about 109,000 acre-feet and was mostly from springs, evapotranspiration, and wells.
Water-level declines of more than 50 feet occurred in some areas between 1953 and 1980 because of less-than-normal precipitation and extensive pumping for irrigation. Water levels recovered most of these declines between 1983 and 1986 because of reduced withdrawals and record quantities of precipitation.
The quality of ground water in the area west of Kanosh has deteriorated since large ground-water withdrawals began in about 1953. The cause of the deterioration probably is movement of poor quality water into the area from the southwest and possibly the west during periods of large ground-water withdrawals and recycling of irrigation water. The quality of water from some wells has improved since 1983, due to increased recharge and decreased withdrawals for irrigation.
Water-level declines of m:>re than 80 feet in some parts of Pahvant Valley are projected if ground-water withdrawals continue for 20 years at the 1977 rate of about 96,000 acre-feet. Rises of as much as 58 feet and declines of as much as 47 feet are projected with withdrawals of 48,000 acre-feet per year for 20 years. The elimination of recharge from the Central Utah Canal is projected to cause water-level declines of up to 8 feet near the canal.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | Other Government Series |
| Title | Ground-water hydrology of Pahvant Valley and adjacent areas, Utah |
| Series title | Technical Publication |
| Series number | 98 |
| Year Published | 1990 |
| Language | English |
| Publisher | Utah Department of Natural Resources, Division of Water Rights |
| Publisher location | Salt Lake City, UT |
| Contributing office(s) | Utah Water Science Center |
| Description | vi, 64 p. |
| Country | United States |
| State | Utah |
| County | Beaver County, Millard County |
| Other Geospatial | Pahvant Valley |
| Google Analytic Metrics | Metrics page |