The report describes the geography, geology, and groundwater resources of the Dutch Flats area in Scotts Bluff and Sioux Counties, Nebr. The area comprises about 60 square miles and consists predominantly of relatively flat-lying terraces. Farming is the principal occupation in the area. The farm lands are irrigated largely from surface water; ground water is used only as a supplementary supply during drought periods. The climate in the area is semiarid, and the mean annual precipitation is about 16 inches. IHORODUCTION Purpose and Scope of the Investigation This investigation is one of several that are being made by*the United § States Geological Survey as part of the program of the Department of the Interior for the control, conservation, development, and use of the water resources of the Missouri River basin. The purpose of this study of the Dutch Flats area was to determine the following: the character, thickness, and extent of the water-bearing formations; the source, occurrence, movement, quantity, and quality of the ground water; the possibility of developing groundwater supplies for irrigation; the cause of the waterlogging in parts of the area; and the cause of the seepage along the Tri-State Canal south of the area.
The area described in this report is in the central part of Carbon County, Wyo., and covers about 170 sq mi. A reconnaissance of the geology and ground-water resources of the Pass Creek Flats area was made to determine the possibilities of developing ground-water supplies for irrigation.Ground water that drains to Pass Creek carries a higher concentration of sulfate than does direct inflow water to the North Platte River.
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