LOCATION.--Lat 41°25'27", long 93°35'14"
referenced to North American Datum of 1927, in SE 1/4 SE 1/4 SW 1/4
sec.35, T.77 N., R.24 W., Warren County, IA, Hydrologic Unit
07100008, on right bank 10 ft downstream from bridge on 115th Avenue,
1.5 mi upstream from bridge on U.S. Highway 69, 4.6 mi northwest of
Indianola, 0.4 mi upstream from Cavitt Creek, and 14.8 mi upstream
from mouth. (map)
DRAINAGE AREA.--489.4 mi2.
SURFACE-WATER RECORDS
PERIOD OF RECORD.--Discharge records from March 1940 to current
year.
REVISED RECORDS.--WSP 1438: Drainage area. WSP 1508: 1940 (M),
1941, 1944, 1946, 1949 (M). WDR-US-2008: Drainage area.
GAGE.--Water-stage recorder. Datum of gage is 776.15 ft above
National Geodetic Vertical Datum of 1929 (U.S. Army Corps of
Engineers benchmark). Prior to June 11, 1946, June 9, 1947, to
November 23, 1948, and September 8, 1951, to October 30, 1952,
non-recording gage at site 1.6 mi downstream at datum 2.81 ft lower;
June 11, 1946, to June 8, 1947, destroyed by flood; November 24,
1948, to September 7, 1951, and October 31, 1952, to September 30,
1962, water-stage recorder at site 1.6 mi downstream at datum 2.81 ft
lower.
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water years 1963-1967.
PERIOD OF DAILY RECORD.--
WATER TEMPERATURE: Daily instantaneous values collected in
conjunction with suspended-sediment samples, October 1962 to
September 1967.
SUSPENDED-SEDIMENT CONCENTRATION AND DISCHARGE: October 1962 to
September 1967.
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