LOCATION.-- Lat 40°06'09", long 87°42'58" (NAD of 1927), in SE1/4SE1/4 sec.16, T.19N., R.12 W., Vermillion County, Hydrologic Unit 05120109, on right bank 75 ft upstream from Butler Branch Bridge, 150 ft upstream from Butler Branch, 0.1 mi downstream from Salt Fork, and 2.5 mi northwest of Catlin.

DRAINAGE AREA.-- 959 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1939 to September 1958. Monthly discharge only for some periods, published in WSP 1305.

GAGE.-- Water-stage recorder. Datum of gage is 527.02 ft above NGVD of 1929 (levels by Corps of Engineers) (526.88 ft NAVD 1988).

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 36,000 ft³/s May 18, 1943, gage height 23.35 ft, from rating curve extended above 12,000 ft³/s on basis of slope-area measurement of peak flow; minimum, 8.0 ft³/s Sept. 30, 1953.

EXTREMES OUTSIDE PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum stage known since 1903, 24.4 ft in March 1939, from floodmarks.