LOCATION.--Lat 41°29'27.4", long 92°57'52.0"
referenced to North American Datum of 1983, in SE 1/4 NW 1/4 NW 1/4
sec.8, T.77 N., R.18 W., Marion County, IA, Hydrologic Unit 07080105,
800 ft east from intersection of Blue Drive and 200th Avenue, and 4.0
mi northeast of Otley. (map)
GROUNDWATER RECORDS
WELL CHARACTERISTICS.--Depth 17 ft. Upper casing diameter 2 in;
top of first opening 12 ft, bottom of last opening 17 ft. Drilled
observation well, cased to 12 ft. All depths below land-surface
datum.
DATUM.--Land-surface datum is 739.93 ft above North American
Vertical Datum of 1988. Measuring point: top of casing, 2.25 ft above
land-surface datum, October 8, 2010, to present. Land-surface datum
from levels.
PERIOD OF RECORD.--Water-level measurements, water years 1997,
2005, 2007, 2009-2015.
PERIOD OF DAILY RECORD.--Water-level records from July 2013 to
October 2014.
GAGE.--Water-level recorder.
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water years 1997, 1999, 2007.
Daily data pages will be decommissioned in early 2026.
Daily data are now available in WDFN.
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