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Dept. of the Interior, U.S. Geological Survey ; Books and Open-File Reports [distributor],

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A digital compilation of the groundwater levels in Puerto Rico was prepared as part of the Caribbean Islands Regional Aquifers System Analysis program. Of special interest are the groundwater levels measurements obtained on a routine basis at wells located in the different aquifer regions or aquifer zones. Data from 181 observation wells were entered in the computer data base. The data base includes the following: name, latitude and longitude coordinates, owner, diameter, depth, station identification, local number, aquifer area or region, period of record, construction date, earliest groundwater level reported, and groundwater level fluctuations for various time periods between 1958 and 1985. Data showing conditions...
Categories: Publication; Types: Citation; Tags: Open-File Report
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Surface water and groundwater resources are widely distributed in Brookings and Kingsbury Counties, an area of nearly 1,700 sq mi of glaciated plains of the Coteau des Prairies plateau in eastern South Dakota. The resources are relatively undeveloped except for large withdrawals for irrigation from shallow glacial aquifers. Groundwater withdrawals accounted for 90% of the 16 ,000 acre-ft of water withdrawn in 1985. The Big Sioux River drains an area of about 2,400 sq mi and flows southward through Brookings County. Discharge of the Big Sioux River near Brookings has averaged 117,000 acre-ft/yr but can decrease to 17 ,600 acre-ft/yr during drought periods. West of the river are thousands of shallow ponds, marshes,...
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