LOCATION.--Lat 43°12'46.0", long 95°14'21.0"
referenced to North American Datum of 1983, in SW 1/4 SW 1/4 SE 1/4
sec.17, T.97 N., R.37 W., Clay County, IA, Hydrologic Unit 10230003,
on right bank 30 ft upstream from bridge on 300th Street, 4.3 mi
northwest of Spencer, 3.8 mi downstream from Drainage Ditch 52, 14.9
mi upstream from Ocheyedan River, and 199.6 mi upstream from mouth.
(map)
DRAINAGE AREA.--523 mi2.
SURFACE-WATER RECORDS
PERIOD OF RECORD.--Discharge records from March 2010 to June 2016,
October 2016 to current year.
GAGE.--Water-stage recorder. Datum of gage is 1,319.11 ft above
North American Vertical Datum of 1988.
REMARKS.--For climatological records collected at this site, see
Raingage at Little Sioux River at 300th Street near Spencer, IA
(station 431246095142101).
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water year 2012.
PERIOD OF DAILY RECORD.--
NITRATE + NITRITE: June 2012 to current year.