LOCATION.-- Lat 39°48'55", long 89°41'55" (NAD of 1927), in NW1/4NE1/4 sec.30, T.16 N., R.5 W., Sangamon County, Hydrologic Unit 07130008, on right bank at downstream side of bridge on State Highways 125 and 97 (Jefferson Street), 0.1 mi east of intersection of State Highway 4 (Veterans Parkway) and State Highways 125 and 97 (Jefferson Street), in Springfield, and at mile 8.2.

DRAINAGE AREA.-- 107 mi².

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: January to February 1948, April to June 1948, December 1948 to current year.

STAGE: Water years 1994 to current year.

GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 524.65 ft above NGVD of 1929 (524.33 ft NAVD 1988). Prior to Dec. 22, 1948, and Mar. 24, 1981 to Mar. 30, 1983, nonrecording gage at same site and datum.

EXTREMES FOR PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 10,700 ft³/s, May 8, 1996, gage height, 16.23 ft; no flow for many days in most years.