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LOCATION.-- Lat 42°06'50", long 90°05'35" (NAD of 1927), in NW1/4SW1/4 sec.31, T.25 N., R.4 E., Carroll County, Hydrologic Unit 07060005, on left bank 0.7 mi upstream from Camp Creek, 2.6 mi downstream from Carroll Creek, 3.5 mi northeast of Savanna, and 13 mi upstream from mouth. |
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DRAINAGE AREA.-- 230 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1940 to October 1977. Monthly discharge only for some periods, published in WSP 1308. |
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REVISED RECORDS.-- WDR IL-75: Drainage area. |
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GAGE.-- Water-stage recorder. Datum of gage is 580.00 ft above NGVD of 1929. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 11,600 ft3/s Jan. 6, 1946, gage height, 28.74 ft; maximum gage height, 31.1 ft Feb. 20, 1971, backwater from ice; no flow Apr. 26, 27, 1952, May 12-14, 1954, backwater from Mississippi River; minimum during nonbackwater periods, 8.0 ft3/s for several days during August to October 1949. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |