LOCATION.-- Lat 38°41'20", long 89°06'00" (NAD of 1927), in NE1/4NW1/4 sec.21, T.3 N., R.1 E., Marion County, Hydrologic Unit 07140202, on left bank at downstream side of bridge on U.S. Highway 51, about 1 mi north of Fairman, about 5 mi north of Sandoval, and at mile 9.9.

DRAINAGE AREA.-- 113 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1979 to current year.

STAGE: Water years 1994 to current year. Gage-height record for April 1955 to Sept. 30, 1979, available in files of U.S. Army Corps of Engineers.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-91.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 460.20 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers).

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 17,000 ft³/s, May 16, 1990, from rating curve extended above 9,540 ft³/s, gage height 20.03 ft; no flow for many days in most years.