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USGS Water-Year Summary 2024
05536215 THORN CREEK AT GLENWOOD, IL
LOCATION - Lat 41°31'48.8", long 87°37'21.3" referenced to North American Datum of 1983, in SW 1/4 SE 1/4 sec.9, T.35 N., R.14 E., Cook County, IL, Hydrologic Unit 07120003, on right bank 20 ft downstream from Cook County Forest Preserve bike trail, 0.7 mi north of Chicago Heights, 0.8 mi south of Glenwood, 1.0 mi upstream from Deer Creek, and at mile 9.2. Quad - Calumet City, 7-1/2' series
DRAINAGE AREA - 24.7 mi². (revised WDR IL-75-1).
REVISIONS HISTORY - WSP 1437: 1955. WDR IL-75-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: May 1949 to current. Prior to October 1974, records published with those for
streams in the St. Lawrence River basin (WSP 1307, 1727, 1911, 2111, WDR IL 1971-74).
STAGE: Water years 1994 to current.
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: May 1949 to current. Prior to October 1974, records published with those for
streams in the St. Lawrence River basin (WSP 1307, 1727, 1911, 2111, WDR IL 1971-74).
STAGE: Water years 1994 to current.
GAGE - Water-stage recorder, satellite telemeter and crest-stage gage. Datum of gage is 610.89 ft above North American Vertical Datum of 1988.
REMARKS - Sewage-treatment plant is located 1 mi upstream. Effluent from sewage-treatment plant consists of publicly supplied water from Lake Michigan and ground-water sources.
Accuracy of records is discussed in the annual Station Analysis archived at the USGS IL Water Science Center.
EXTREMES OUTSIDE PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE: Flood of April 1947 reached a stage of 12.94 ft, from floodmarks, discharge not determined.
SURFACE-WATER DISCHARGE AND STAGE: Flood of April 1947 reached a stage of 12.94 ft, from floodmarks, discharge not determined.
EXTREMES FOR PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,700 ft³/s (estimated), July 18, 1996, gage height unknown; maximum recorded gage height, 11.26 ft, Aug. 17, 1968, may have been higher during period of no gage-height record, July 17-20, 1996; no flow, June 3, 1992, due to no discharge during sewage-treatment plant repairs.
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,700 ft³/s (estimated), July 18, 1996, gage height unknown; maximum recorded gage height, 11.26 ft, Aug. 17, 1968, may have been higher during period of no gage-height record, July 17-20, 1996; no flow, June 3, 1992, due to no discharge during sewage-treatment plant repairs.
