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LOCATION.-- Lat 41°56'15", long 89°09'23" (NAD of 1983), in NE1/4SW1/4 sec.18, T.40 N., R.1 E., Ogle County, Hydrologic Unit 07090005, near left bank on downstream side of highway bridge, 2 mi west of Flagg Center and 3 mi downstream from Chicago & Northwestern Railraod bridge. |
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DRAINAGE AREA.-- 125 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 September 1951. |
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REVISED RECORDS.-- W 925: 1040. W 1175: 1949. |
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GAGE.-- Wire-weight gage and crest-stage indicator; gage read twice daily. Gage datum is 750.00 ft. above NGVD of 1929 (749.84 ft NAVD 1988). |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,630 ft3/s Feb. 20, 1951; minimum observed, 1.8 ft3/s Jan. 2, 1940. |
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EXTREMES OUTSIDE PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Flood of February 1937 reached a stage of about 8.5 ft, from information by local residents. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |