Geology topics
Research about South Dakota
Source-linked reports with geographic coverage including South Dakota.
Map showing locations of mines, prospects, and patented mining claims, and classification of mineral deposits in the Silver City 7 1/2-minute Quadrangle, Black Hills, South Dakota
This map is one in a set of 26 maps (see index map) at 1:24,000 scale of the Black Hills region of South Dakota and Wyoming om which are shown a geologic classification of mines, a bibliography of mineral deposits, and locations of active and inactive mines, prospects, and patented mining claims. Some of these maps are published as U. S. Geological Survey Miscellaneous Field Studies Maps (MF series) and some as U.S. Geological Survey Open-File Reports (QF series); see index map. An earlier unpublished version of this set of maps was the data base from which plate 4 (scale 1:250,000) of DeWitt and others (1986) was compiled. Subsequent to that publication, the set has been revised and updated, and prospects and patented claims have been added. These revised and more detailed 1:24,000-scale maps should be used for the equivalent areas of plate 4 of DeWitt and others (1986).
Estimated water use in South Dakota, 1985
Water use in South Dakota during 1985 is estimated to have been 674 million gal/day. This is a slight decrease from the 1980 estimate of 690 million gal/day. Of the total use, 63% was from surface-water sources and 37% was from groundwater sources. About 75% of the total water use was for agriculture, 16% was for domestic and commercial use, 8% was for industrial and mining use, and 1% was for thermoelectric and geothermal uses. Of the total used, 361 million gal/day were consumed and 313 million gal/day were returned to the surface- and groundwater system. Water use by agriculture, the largest user, was mostly for irrigation. Total use was 516,000 acre-ft (460 million gal/day) for irrigation of 397,000 acres. Non-irrigation use, mainly for livestock, was 47.1 million gal/day. About 12% of the total use was by public-water suppliers. Seventy-five percent of the deliveries by public-water suppliers were for domestic use by 78% of the population. In addition to offstream use, instream use was substantial because of hydroelectric-power generation by the four dams on the Missouri River. During 1985, 60,500 million gal/day were used to generate 6,095 gigawatt-hr of electricity.
Water resources data, South Dakota, water year 1987
Water Resources Data for the 1987 water year for South Dakota consists of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels in wells. This report contains discharge records for 114 streamflow-gaging stations; stage and contents records for 10 lakes and reservoirs, stage for 2 streams and 2 lakes; water-quality records for 25 stream-gaging stations, 3 wells, 6 ungaged streamsites, 3 lakes, 1 sewage lagoon, and 1 precipitation site; water levels for 31 wells; and precipitation records at 9 sites. Additional water data were collected at various sites, not part of the systematic data-collection program, and are published as miscellaneous measurements and analyses. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in South Dakota.