LOCATION.--Lat 42°32'37", long 93°35'22"
referenced to North American Datum of 1983, in SE 1/4 SE 1/4 SW 1/4
sec.5, T.89 N., R.23 W., Hamilton County, IA, Hydrologic Unit
07080207, at bridge on 170th Street, 4.6 mi northeast of Blairsburg.
(map)
DRAINAGE AREA.--12.0 mi2.
SURFACE-WATER RECORDS
PERIOD OF RECORD.--Discharge records from February 2006 to
September 2008; annual maximum discharge, water years 2009 to current
year.
GAGE.--Water-stage recorder, February 2006 to September 2008;
crest-stage gage, October 2008 to current year. Datum of gage is
1,146.03 ft above National Geodetic Vertical Datum of 1929.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD.--Precipitation records from February 2006 to
November 2008.
INSTRUMENTATION.--Tipping bucket rain gage.
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water years 2006-2009.
PERIOD OF DAILY RECORD.--
SPECIFIC CONDUCTANCE: April 2006 to June 2009, records
fragmentary.
WATER TEMPERATURE: April 2006 to June 2009, November 2010 to November
2011, records fragmentary.
DISSOLVED OXYGEN: April 2006 to November 2008, records
fragmentary.
pH: April 2006 to November 2008, records fragmentary.