LOCATION.-- Lat 38°23'11", long 87°58'32" (NAD of 1927), in NW1/4SE1/4 sec.33, T.1 S., R.14 W., Edwards County, Hydrologic Unit 05120113, on right bank at downstream side of bridge on State Highway 15, 0.5 mi north of Browns, 0.7 mi upstream from railroad bridge, and at mile 14.6.

DRAINAGE AREA.-- 228 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1940 to current year.

STAGE: Water years 1994 to current year.

SURFACE-WATER QUALITY

CHEMICAL: Water years 1978-91.

MISCELLANEOUS: Water years 1998 and 2002.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 372.92 ft above NGVD of 1929 (372.50 ft NAVD 1988). Prior to Dec. 11, 1968, water-stage recorder and concrete dam at site 0.4 mi downstream at datum 2.0 ft higher. Dec. 11, 1968, to Aug. 13, 1969, nonrecording gage at site 0.5 mi downstream at datum 1.0 ft lower. Prior to Oct. 1, 1982, auxiliary nonrecording gage near mouth on Wabash River at Grayville read twice daily.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 7,500 ft³/s, May 9, 1961, gage height, 24.04 ft, site and datum then in use; no flow at times in most years.