USGS Water-Year Summary 2024
405227098165601 11N 8W31CCCA1 Grand Island
High Plains aquifer
Sand and Gravel Deposits
LOCATION - Lat 40°52'27", long 98°16'56" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 SW 1/4 sec.31, T.11 N., R.8 W., Merrick County, NE, Hydrologic Unit 10200101,
GROUNDWATER RECORDS
WELL CHARACTERISTICS - Depth 30 ft. Upper casing diameter 2 in; top of first opening 10 ft, bottom of last opening 30 ft.
DATUM - Land-surface datum is 1,835 ft above National Geodetic Vertical Datum of 1929. Measuring point: MP is a mark on the deck of the shelter, 3.23 ft above land-surface datum, May 11, 2006 to present.
PERIOD OF RECORD - June 1999 to current year.
EXTREMES FOR PERIOD OF RECORD - Highest water level, 4.60 feet below land surface datum, June 4,5, 2015; lowest, 12.76 feet below land surface datum, November 16-17, 2003.