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LOCATION.-- Lat 42°05'56", long 89°03'07" (NAD of 1983), in NW1/4SW1/4 sec.19, T.42 N., R.2 E., Ogle County, Hydrologic Unit 07090006, on right bank 800 ft downstream from Chicago, Milwaukee, St. Paul and Pacific Railroad bridge, 800 ft upstream from bridge on State Highway 72, 3 mi west of Monroe Center, and 8 mi upstream from mouth. |
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DRAINAGE AREA.-- 114 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1939 to October 1971. Monthly discharge only for some periods, published in WSP 1308. |
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PARTIAL RECORD: Annual maximum, water years 1972-80, miscellaneous discharge measurements water year 1981. |
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REVISED RECORDS.-- WSP 955: 1941. WSP 1175: 1941(P), 1946(P), WSP 1308: 1940(M). WSP 1338: 1943(M), 1946, 1948(M), 1951, 1952(M). |
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GAGE.-- Water-stage recorder. Datum of gage is 734.27 ft above NGVD of 1929 (734.12 ft NAVD 1988). Prior to May 1, 1940, nonrecording gage at same site and datum. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 6,100 ft3/s July 9, 1951, Oct. 10, 1954; maximum gage height, 11.41 ft July 9, 1951, minimum discharge, 1.7 ft3/s Dec. 23, 1963. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |