USGS Water-Year Summary 2025
420757104024701 25N 58W13CDBC1 Sheep Creek 6A
High Plains aquifer
Brule Formation of White River Group
LOCATION - Lat 42°07'56.04", long 104°02'48.45" referenced to North American Datum of 1983, in NW 1/4 SE 1/4 SW 1/4 sec.13, T.25 N., R.58 W., Sioux County, NE, Hydrologic Unit 10180009,
REVISIONS HISTORY - WDR-US-2007: 2005-2006 (Extremes for Period of Record and Extremes for Current Year).
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 30 ft. Upper casing diameter 2.5 in; top of first opening 10 ft, bottom of last opening 31 ft.
DATUM - Land-surface datum is 4,208.37 ft above North American Vertical Datum of 1988. Measuring point: MP is on the deck of DCP shelter, 2.70 ft above land-surface datum, Feb. 22, 2006 to present.
PERIOD OF RECORD - October 1997 to October 4, 2016.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 1.61 feet below land surface datum, August 2, 2016; lowest, 30.46 feet below land surface datum, April 4, 2007.