LOCATION.--Lat 41°00'57", long 95°07'50"
referenced to North American Datum of 1927, in NW 1/4 NE 1/4 NW 1/4
sec.29, T.72 N., R.37 W., Montgomery County, IA, Hydrologic Unit
10240005, 0.3 mi east of intersection of County Highway H34 and M
Avenue, and 3.8 mi east of Red Oak. (map)
WELL CHARACTERISTICS.--Depth 40 ft. Upper casing diameter 3 in;
top of first opening undefined, bottom of last opening undefined.
Drilled observation well, cased to 40 ft. All depths below
DATUM.--Land-surface datum is 1,276.77 ft above North American
Vertical Datum of 1988. Measuring point: chiseled arrow on floor of
DCP shelter, 2.47 ft above land-surface datum, August 20, 1998, to
present. Land-surface datum from lidar digital elevation model.
PERIOD OF RECORD.--Water-level measurements, water years 1937 to
PERIOD OF DAILY RECORD.--Water-level records from August 1998 to