By: J. W. Hood
The Promontory Mountains area is in eastern Box Elder County, and its drainage is directly tributary to Great Salt Lake. The drainage area consists of 228,000 acres. Ground water is most uniformly available from unconsolidated and semiconsolidated rocks of Cenozoic age, but substantial quantities of water also are obtained, mainly through springs, from consolidated rocks of Precambrian and Palezoic age. Part of the water in the Promontory Mountains area is derived from precipitation, which is estimated to average 240,000 acre-feet annually. Of this amount, about 93 percent is consumed at or near the point of fall. An estimated 4,000 acre-feet runs off in streams. The total runoff is estimated to average 6,000 acre-feet and includes unconsumed spring discharge.
This report is the eleventh in a series by the U.S. Geological Survey in cooperation with the Utah Department of Natural Resources, Division of Water Rights, which describes the water resources of the western basins of Utah. Its purpose is to present hydrologic data for the Promontory Mountains area, to provide an evaluation of the potential water-resource development of the area, and to identify needed studies that would improve understanding of the area's water supply.
Pages: 42 p.
Location: Box Elder County
Media Type: Paper Publication