USGS Water-Year Summary 2024
405014099591001 10N 23W 18CADA1 Cozad
High Plains aquifer
Sand and Gravel Deposits
LOCATION - Lat 40°50'14.10", long 99°59'10.28" referenced to North American Datum of 1983, in SE 1/4 NE 1/4 SW 1/4 sec.18, T.10 N., R.23 W., Dawson County, NE, Hydrologic Unit 10200101,
REVISIONS HISTORY - WDR-US-2007: 2005 (Extremes for Current Year).
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 20 ft. Upper casing diameter 2 in; top of first opening 10 ft, bottom of last opening 20 ft.
DATUM - Land-surface datum is 2,486.12 ft above North American Vertical Datum of 1988. Measuring point: Surveyed MP height is mark on north side of PVC well casing, 3.10 ft above land-surface datum, Jun. 10, 1999 to present.
PERIOD OF RECORD - June 16, 1999 to current.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 2.71 feet below land surface datum, September 24, 2013; lowest, 10.48 feet below land surface datum, September 27, 2018.