LOCATION.--Lat 42°02'12", long 95°23'57" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 NW 1/4 sec.4, T.83 N., R.39 W., Crawford County, IA, Hydrologic Unit 10230007, at southwest corner of intersection of State Highway 141 and U.S. Highway 59, and 1.4 mi northwest of Denison. (map)

GROUNDWATER RECORDS

WELL CHARACTERISTICS.--Depth 48 ft. Upper casing diameter 2 in; top of first opening 37.5 ft, bottom of last opening 47.5 ft. Drilled observation well, cased to 48 ft. All depths below land-surface datum.

DATUM.--Land-surface datum is 1,422.30 ft above North American Vertical Datum of 1988. Measuring point: top of casing, 1.50 ft above land-surface datum, April 24, 2008, to present. Land-surface datum from levels.

PERIOD OF RECORD.--Water-level measurements, water years 2008-2015.

PERIOD OF DAILY RECORD.--Water-level records from January 2009 to October 2014.

GAGE.--Water-level recorder.

National Groundwater Monitoring Network