USGS Water-Year Summary 2023
05576900 SANGAMON RIVER NEAR SPRINGFIELD, IL
LOCATION - Lat 39°52'17", long 89°36'50.6" referenced to North American Datum of 1983, in SE 1/4 NW 1/4 NW 1/4 sec.1, T.16 N., R.5 W., Sangamon County, IL, Hydrologic Unit 07130008, on upstream side of North Peoria Road/Business Route I-55 bridge, 1.0 miles north of Dirksen Parkway and Business Route I-55 intersection, 2.3 miles downstream from Fancy Creek, and at river mile 75.5.
DRAINAGE AREA - 2,736 mi².
REVISIONS HISTORY - Revisions: Gage datum was updated to 484.65 ft NAVD88 on June 6, 2023, based on a GNSS Level II survey using GEOID18.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
STAGE: June 2010 to current.
GAGE - Water-stage recorder, satellite telemeter, and crest stage gage. Datum of gage is 484.65 ft above NAVD of 1988.
EXTREMES FOR PERIOD OF RECORD -
STAGE: Maximum gage height, 45.41 ft, Dec. 31, 2015; minimum, 20.74 ft, Dec. 18, 2013.