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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
03346000 NORTH FORK EMBARRAS RIVER NEAR OBLONG, IL
LOCATION - Lat 39°00'37", long 87°56'44" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 sec.35, T.7 N., R.14 W., Crawford County, IL, Hydrologic Unit 05120112, on downstream side of bridge on State Highway 33, 0.8 mi. upstream from railroad bridge, 2 mi. west of Oblong, and at mile 10.5.
DRAINAGE AREA - 318 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD -
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: October 1940 to current.
STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
CHEMICAL: Water years 1978-91.
SURFACE-WATER DISCHARGE AND STAGE
DISCHARGE: October 1940 to current.
STAGE: Water years 1994 to current.
SURFACE-WATER QUALITY
CHEMICAL: Water years 1978-91.
GAGE - Water-stage recorder, satellite telemeter and crest-stage gage. Datum of gage is 455.79 ft NAVD 1988. Prior to Dec. 11, 1940, nonrecording gage at present site and datum 2.00 ft higher. Dec. 11, 1940, to Sept. 30, 1964, water-stage recorder at present site and datum 2.00 ft higher. Oct. 1, 1964 to Oct. 7, 1971, water-stage recorder at present site and datum. Oct. 8, 1971 to May 15, 1979, water-stage recorder at site 0.8 mi downstream at present datum.
REMARKS - Accuracy of records is discussed in the annual Station Analysis archived at the USGS IL Water Science Center.
EXTREMES FOR PERIOD OF RECORD - SURFACE-WATER DISCHARGE AND STAGE:
Maximum discharge, 46,200 ft³/s, June 7, 2008, from rating curve extended above 19,000 ft³/s, gage height, 26.26 ft, no flow for many days in 1953-54, 1964, 1988.
