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LOCATION.-- Lat 41°40'18", long 88°26'29" (NAD of 1927), in SE1/4NW1/4 sec.21, T.37 N., R.7 E., Kendall County, Hydrologic Unit 07120007, on right bank 300 ft upstream from bridge on State Highway 47, 2.0 mi north of Yorkville, and at mile 3.3. |
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DRAINAGE AREA.-- 70.2 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1960 to current year. |
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STAGE: Water years 1994 to current year. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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BIOLOGICAL |
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ALGAE: Pigment and biomass, Water year 1990. |
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REVISED RECORDS.-- WDR IL-75-1: Drainage area. |
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GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 612.34 ft above NGVD of 1929. |
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REMARKS.-- Diversion about 7 miles upstream near Jericho Rd. that crosses the watershed divide during overbank flow. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE -WATER DISCHARGE AND STAGE: Maximum discharge, 5,510 ft3/s, from rating curve extended above 3,900 ft3/s, July 18, 1996, gage height, 13.16 ft, backwater from debris jam; minimum, 0.10 ft3/s, Dec. 7, 1962, result of freeze up. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |