LOCATION.-- Lat 37°42'46", long 89°03'32" (NAD of 1927), in SW1/4NE1/4 sec.25, T.9 S., R.1 E., Williamson County, Hydrologic Unit 07140106, on north shore 300 ft north of Wolf Creek Road bridge, 3.2 mi southeast of Carterville, 8 mi east of Carbondale, and at mile 20.2.

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: October 1976 to June 1977, January 1979.

STAGE: October 1952 to September 1979. Prior to October 1964, published as "near Carbondale".

GAGE.-- Water-stage recorder. Datum of gage is 400.00 ft above NGVD of 1929. Prior to Apr. 22, 1953, nonrecording gage at present site and Apr. 22, 1953 to Oct. 14, 1964, water-stage recorder at site 5.0 mi west, at same datum.

REMARKS.-- Lake is part of Crab Orchard National Wildlife Refuge. Diversion from lake for municipal supply of Carbondale, Marion, Herrin, and Carterville during drought periods.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum gage height, 8.85 ft, Mar. 28, 1977; minimum, 2.35 ft, Nov. 6, 1960.