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Ground-water appraisal of sand plains in Benton, Sherburne, Stearns, and Wright counties, central Minnesota

Open-File Report 80-1285

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Abstract

Surficial-sand aquifers in 960 square miles of central Minnesota were studied to determine the occurrence, availability, and suitability of the surficial aquifer as a source of water. The aquifer, which is being increasingly developed for irrigation, is predominantly medium to coarse sand with lesser amounts of gravel. Saturated-sand aquifers in the Maine Prairie area locally exceed 100 feet in thickness, and transmissivity exceeds 40,000 feet squared per day. Similar valley-fill deposits in Sherburne County exceed 80 feet in thickness, transmissivity exceeds 30,000 feet squared per day, and expected well yields are from 2,000 to 3,000 gallons per minute. Water is of the calcium bicarbonate type and suitable for most uses. Relatively high nitrate and chloride concentrations occur in a heavily irrigated area in Sherburne County. Surficial aquifers in Sherburne County and the Maine Prairie area of Stearns county were simulated by two-dimensional digital ground-water flow models. Both modeled areas will support additional withdrawals, but caution must be exercised because lowering ground-water levels will also lower the lake levels and reduce streamflow. In some areas, aquifer dewatering will reduce individual well yields. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Ground-water appraisal of sand plains in Benton, Sherburne, Stearns, and Wright counties, central Minnesota
Series title:
Open-File Report
Series number:
80-1285
Edition:
WRI/OFR
Year Published:
1980
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
viii, 111 p. ill., maps ;28 cm.