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USGS Water-Year Summary 2024
441759103261201 Tilford North 4N 6E19AABA
Paleozoic aquifers
Minnelusa Formation (Permian andPennsylvanian)
Minnelusa Formation (Permian andPennsylvanian)
LOCATION - Lat 44°18'00.1", long 103°26'12.4" referenced to North American Datum of 1983, in NW 1/4 NE 1/4 NE 1/4 sec.19, T.4 N., R.6 E., Meade County, SD, Hydrologic Unit 10120111, Latitude 44 17 59.7 Longitude 103 26 12.2 Land-net location NWNENEsec. 19,T. 4N,R. 6E Hydrologic unit code 10120111 At W. Tilford exit.
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 302 ft. Upper casing diameter 5 in; top of first opening 296 ft, bottom of last opening 302 ft.
DATUM - Land-surface datum is 3,638 ft above North American Vertical Datum of 1988. Measuring point: Top of steel casing, 2.1 ft above land-surface datum, Jul. 10, 1984 to present; Top of fitting, 2.93 ft above land-surface datum, Apr. 21, 2014 to Jul. 26, 2016; Top of extended steel casing, 5.12 ft above land-surface datum, Jul. 25, 2016 to Jun. 22, 2017; Unknown, 2.27 ft above land-surface datum, Jun. 21, 2017 to present; Top of steel casing coupler, 2.27 ft above land-surface datum, Jun. 24, 2017 to Dec. 18, 2018; Top of fitting, 4.54 ft above land-surface datum, Dec. 17, 2018 to present; , 4.94 ft above land-surface datum, Oct. 1, 2019 to present.
PERIOD OF RECORD - July 1984 to current year.
GAGE - Data collection platform and submersible transducer, 60 minute recording interval.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 24.73 ft above land-surface datum (pressure head), June 9, 2000; Lowest water level, 62.89 ft below land-surface datum, April, 6-7 1993.
