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LOCATION.-- Lat 42°09'06", long 87°57'26" (NAD of 1927), in NE1/4NW1/4 sec.4, T.42 N., R.11 E., Cook County, Hydrologic Unit 07120004, on left bank at downstream side of bridge on Short Aptakisic Road, 1.0 mi downstream from unnamed tributary, 2.5 mi west of Wheeling, and at mile 5.0. |
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DRAINAGE AREA.-- 19.6 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: August 1952 to current year. |
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STAGE: Water years 1994 to current year. |
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REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-94-2: 1986-93 (P), 1993. |
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GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 658.60 ft above NGVD of 1929 (Cook County Highway Department bench mark). |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 887 ft3/s, July 22, 1982, gage height, 7.94 ft; no flow at times in several years. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |