USGS Water-Year Summary 2024
405137099085201 10N 16W 5DC1 Riverdale Deep
High Plains aquifer
Ogallala Formation
LOCATION - Lat 40°51'28.95", long 99°09'10.2" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 SW 1/4 sec.05, T.10 N., R.16 W., Buffalo County, NE, Hydrologic Unit 10200102, north of Kearney on Highway 10 7 1/2 mi. north of intersection of Highway 10 and Highway 40, then west approximately 3 1/2 mi.
REVISIONS HISTORY - WDR-US-2007: 2005-2006 (Extremes for Period of Record).
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 240 ft. Upper casing diameter 6 in; top of first opening 221 ft, bottom of last opening 240 ft.
DATUM - Land-surface datum is 2,263 ft above North American Vertical Datum of 1988. Measuring point: Surveyed MP height is mark on shelf of gage shelter, 1.1 ft above land-surface datum, Oct. 22, 1968 to present.
PERIOD OF RECORD - November 1968 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 108.65 feet below land surface datum, July 2, 1969; lowest, 139.29 feet below land surface datum, September 9, 2023.