USGS Water-Year Summary 2024
411738097264301 15N 1W 9BBBB1 Shelby
High Plains aquifer
Sand and Gravel Deposits
LOCATION - Lat 41°17'37.6", long 97°26'42.6" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 NW 1/4 sec.9, T.15 N., R.1 W., Polk County, NE, Hydrologic Unit 10200103, 7 mi north of intersection of U.S. Highway 92 and 1 mi west of Shelby.
REVISIONS HISTORY - WDR-US-2007: 2005-2006 (Extremes for Period of Record).
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 51 ft. Upper casing diameter undefined; top of first opening 20 ft, bottom of last opening 51 ft.
DATUM - Land-surface datum is 1,525 ft above National Geodetic Vertical Datum of 1929. Measuring point: Mark on top edge of shelf, 3.00 ft above land-surface datum, Oct. 11, 1988 to present.
PERIOD OF RECORD - October 1988 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 10.70 feet below land surface datum, June 26, 2019; lowest, 25.23 feet below land surface datum, June 8, 12, 2006.