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LOCATION.-- Lat 39°20'40", long 88°10'15" (NAD of 1927), in NW1/4 sec.2, T.10 N., R.9 E., Cumberland County, Hydrologic Unit 05120112, on downstream side of Ryans Bridge, 2.8 mi southwest of Diona, 7 mi downstream from Indian Creek, 9 mi upstream from Hurricane Creek, and at mile 103.7. |
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DRAINAGE AREA.-- 919 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: December 1938 to June 1940, July 1944 to September 1947, October 1970 to October 1982. |
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PARTIAL RECORD: Annual maximum, water years 1983 to 1992. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1971-76 and 1978-91. |
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SPECIFIC CONDUCTANCE: Water years 1971-76. |
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WATER TEMPERATURE: Water years 1971-76. |
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GAGE.-- Water-stage recorder. Datum of gage is 534.00 ft above NGVD of 1929 (levels by Corps of Engineers) (533.79 ft NAVD 1988). Dec. 16, 1938, to June 30, 1940, water-stage recorder at present site at datum 32.48 ft higher. July 6, 1944, to Sept. 30, 1947, and Oct. 1, 1970, to Oct. 12, 1973, nonrecording gage at present site and datum. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 18,200 ft3/s July 22, 1973, gage height, 22.30 ft; minimum observed, 2.6 ft3/s Sept. 17, 1944. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |