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Geohydrologic reconnaissance of the Crofton Unit, northeastern Nebraska

Water-Resources Investigations Report 81-58

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Abstract

This report describes sources, locations, quantity, and quality of ground water in a 350-square-mile area whose potential for irrigation development is being evaluated by the U.S. Bureau of Reclamation. The entire area is underlain by Precambrian Sioux Quartzite, which throughout most of the area is overlain by undifferentiated Paleozoic rocks. The Sioux and, where present, Paleozoic rocks are overlain unconformably by Cretaceous formations, including the Dakota and Niobrara Formations. Surface strata are Pleistocene and Holocene deposits of sand and gravel and Pleistocene glacial till. The Dakota and Niobrara Formations are each capable of yielding water sufficient for irrigation wells in parts of the area. Pleistocene and Holocene deposits yield adequate water for irrigation in the southern part of the area and along the flood plain of the Missouri River. Water from the Dakota Formation is so saline as to necessitate burdensome salinity-control measures for successful long-term irrigation use. That from the Niobrara Formation is suitable for irrigation of most crops. Water from Pleistocene and Holocene deposits is highly variable, but is suitable for irrigation in the southern part of the area and along the Missouri River. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geohydrologic reconnaissance of the Crofton Unit, northeastern Nebraska
Series title:
Water-Resources Investigations Report
Series number:
81-58
Edition:
-
Year Published:
1981
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
v, 34 p. :ill., maps ;27 cm.