USGS Water-Year Summary 2024
440310103173801 1N 7E 8DDCD Chapel Lane
Paleozoic aquifers
Minnelusa Formation (Permian andPennsylvanian)
LOCATION - Lat 44°03'12.4", long 103°17'41.6" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 sec.08, T.1 N., R.7 E., Pennington County, SD, Hydrologic Unit 10120110,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 360 ft. Upper casing diameter 7 in; top of first opening 140 ft, bottom of last opening 360 ft.
DATUM - Land-surface datum is 3,411.35 ft above North American Vertical Datum of 1988. Measuring point: Metal bar, 3.26 ft above land-surface datum, Jul. 12, 2011 to present.
PERIOD OF RECORD - August 1991 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level 17.09 ft below land surface datum, June 22, 2019. Lowest water level 30.16 ft below land surface datum, Oct. 2, 1992.