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LOCATION.-- Lat 42°26'36", long 88°14'51" (NAD of 1927), in NE1/4NW1/4 sec.25, T.46 N., R.8 E., McHenry County, Hydrologic Unit 07120006, on right bank at upstream side of bridge on Winn Road, 0.6 mi west of Spring Grove, and at mile 7.4. |
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DRAINAGE AREA.-- 192 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: August 1966 to current year. |
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STAGE: Water years 1994-2002. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1976-91. |
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SEDIMENT: Dec. 1997 to May 1999. |
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PRECIPITATION: October 1999 to current year. |
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REVISED RECORDS.-- WSP 2115: 1969-70(M). WDR IL-75-1: Drainage area. WDR IL-85-2: 1966-67(M), 1971. |
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GAGE.-- Water stage recorder, phone telemeter, rain gage, and crest-stage gage. Datum of gage is 746.00 ft above NGVD of 1929. |
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REMARKS.-- Suspended-sediment samples were collected twice weekly with more frequent samples collected during high runoff periods. Collection, computation, and publication of precipitation data do not necessarily conform to standards used by the National Weather Service. Precipitation data could be subject to error for days with freezing and/or thawing of precipitation. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,910 ft3/s, Sept. 26, 1986, gage height, 14.26 ft; minimum discharge, 6.6 ft3/s, Aug. 7, 1988. |
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SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily, 244 mg/L, May 17, 1999; minimum daily, 8 mg/L, Nov. 24, 1998. |
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SUSPENDED-SEDIMENT LOAD: Maximum daily, 247 tons, May 17, 1999; minimum daily, 1.9 tons, Nov. 24, 1998. |
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PRECIPITATION: Maximum daily total, 2.82 in., June 12, 2000. |
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EXTREMES OUTSIDE PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Flood in April 1960 reached a stage of 13.7 ft, from information by local resident, and flood in July 1938 reached a stage of about 4 to 6 ft higher than that in April 1960. |
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EXTREMES FOR CURRENT YEAR.-- Maximum daily total, 2.07 in., September 2. |
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PRECIPITATION (CR10), in INCHES, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY SUM VALUES |
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| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | 0.00 | 0.00 | 0.01 | 0.00 | 0.05 | 0.00 | 0.00 | 0.18 | 0.00 | 0.00 | 0.00 | 0.00 |
| 2 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.27 | 0.01 | 0.00 | 0.00 | 0.00 | 2.07 |
| 3 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.00 | 0.00 | 0.00 | 0.82 | 0.00 | 0.00 | 0.00 |
| 4 | 0.21 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.67 | 0.00 | 0.37 | 0.00 |
| 5 | 0.00 | 0.00 | 0.08 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.79 | 0.00 | 0.00 | 0.00 |
| 6 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.21 | 0.00 | 0.02 | 0.00 | 0.29 | 0.00 | 0.00 |
| 7 | 0.00 | 0.00 | 0.00 | 0.00 | 0.11 | 0.09 | 0.53 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 8 | 0.00 | 0.00 | 0.00 | 0.00 | 0.11 | 0.01 | 1.03 | 0.04 | 0.00 | 0.26 | 0.00 | 0.00 |
| 9 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.02 | 0.05 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 |
| 10 | 0.35 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.01 | 0.00 | 0.15 | 0.00 | 0.00 | 0.02 |
| 11 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.89 | 0.69 | 0.00 | 0.00 | 0.00 |
| 12 | 0.59 | 0.00 | 0.30 | 0.00 | 0.00 | 0.01 | 0.00 | 0.01 | 0.00 | 0.00 | 0.12 | 0.00 |
| 13 | 0.94 | 0.31 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.26 | 0.00 | 0.91 | 0.00 |
| 14 | 0.05 | 0.23 | 0.01 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.00 | 0.01 | 0.00 |
| 15 | 0.01 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 |
| 16 | 0.00 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.00 | 0.00 | 0.07 | 0.00 |
| 17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 |
| 18 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.49 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 |
| 19 | 0.00 | 0.08 | 0.04 | 0.00 | 0.34 | 0.02 | 0.03 | 0.04 | 0.00 | 0.00 | 0.07 | 0.35 |
| 20 | 0.00 | 0.00 | 0.01 | 0.00 | 0.31 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 |
| 21 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.29 | 0.00 | 0.00 | 0.00 | 0.58 | 0.00 |
| 22 | 0.78 | 0.00 | 0.12 | 0.17 | 0.07 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.31 | 0.14 |
| 23 | 0.54 | 0.03 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.08 | 0.00 | 0.00 | 0.67 | 0.00 |
| 24 | 0.62 | 0.44 | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 0.03 | 0.00 |
| 25 | 0.00 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.48 | 0.00 | 0.00 | 0.00 | 0.00 |
| 26 | 0.00 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.01 | 0.00 | 0.00 |
| 27 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.51 | 0.00 | 0.00 | 0.18 | 0.00 | 0.00 |
| 28 | 0.00 | 0.05 | 0.00 | 0.00 | 0.01 | 0.01 | 0.01 | 0.00 | 0.00 | 0.13 | 0.00 | 0.07 |
| 29 | 0.00 | 0.03 | 0.00 | 0.00 | --- | 0.01 | 0.00 | 0.01 | 0.00 | 0.30 | 0.00 | 0.93 |
| 30 | 0.00 | 0.18 | 0.00 | 0.00 | --- | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 31 | 0.00 | --- | 0.00 | 0.09 | --- | 0.02 | --- | 0.00 | --- | 0.00 | 0.00 | --- |
| TOTAL | 4.10 | 1.52 | 0.62 | 0.36 | 1.44 | 0.43 | 3.38 | 2.40 | 4.46 | 1.17 | 3.14 | 3.92 |
| MEAN | 0.13 | 0.05 | 0.02 | 0.01 | 0.05 | 0.01 | 0.11 | 0.08 | 0.15 | 0.04 | 0.10 | 0.13 |
| MAX | 0.94 | 0.44 | 0.30 | 0.17 | 0.34 | 0.21 | 1.03 | 0.89 | 1.67 | 0.30 | 0.91 | 2.07 |
| WTR YR 2002 TOTAL 26.94 MEAN 0.07 MAX 2.07 |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |