LOCATION.-- Lat 41°55'58", long 88°20'28" (NAD of 1927), in NE1/4SE1/4 sec.20, T.40 N., R.8 E., Kane County, Hydrologic Unit 07120007, on right bank at downstream side of bridge on Randall Road, 2.4 mi northwest of St. Charles, and at mile 2.2. |
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DRAINAGE AREA.-- 51.7 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: December 1960 to current year. |
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STAGE: Water years 1994-2002. |
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SURFACE-WATER QUALITY |
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MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, water year 2000. |
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PRECIPITATION: August 2000 to current year. |
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BIOLOGICAL |
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BENTHIC MACROINVERTEBRATES: Water year 2000. |
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HABITAT: Water year 2000. |
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REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-82-2: 1966(M), 1968(M), 1970-71(M), 1973(M), 1978-79(M). |
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GAGE.-- Water-stage recorder, phone telemeter, crest-stage gage, and rain gage. Datum of gage is 704.84 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, 2,580, Feb. 21, 1997, from rating curve extended above 1,960 ft3/s, gage height, 8.77 ft; maximum gage height, 9.66 ft, Feb. 8, 1965, from floodmark, ice jam; minimum discharge, 0.10 ft3/s, several days in 1961 and 1965. |
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PRECIPITATION: Maximum recorded daily total, 3.27 in., August 13, 2002. |
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REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. |
DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 8.6 | 42 | 49 | 24 | e23 | 34 | 38 | 43 | 26 | 20 | 7.9 | 18 |
2 | 7.8 | 38 | 41 | 24 | e22 | 37 | 42 | 148 | 23 | 15 | 6.7 | 21 |
3 | 7.7 | 35 | 37 | 23 | e20 | 38 | 40 | 105 | 23 | 13 | 5.9 | 31 |
4 | 6.7 | 33 | 35 | 23 | e20 | 44 | 37 | 75 | 504 | 13 | 6.1 | 20 |
5 | 19 | 31 | 33 | 23 | e20 | 38 | 35 | 63 | 986 | 11 | 18 | 15 |
6 | 16 | 29 | 33 | 23 | 20 | 32 | 34 | 56 | 345 | 11 | 12 | 14 |
7 | 12 | 29 | 30 | 21 | 20 | 37 | 39 | 46 | 178 | 10 | 8.8 | 12 |
8 | 10 | 28 | 29 | 20 | 19 | 131 | 98 | 44 | 126 | 9.7 | 7.2 | 11 |
9 | 9.0 | 27 | 27 | 22 | 20 | 270 | 244 | 52 | 102 | 59 | 6.1 | 11 |
10 | 9.8 | 26 | 25 | 22 | 54 | 183 | 154 | 42 | 88 | 39 | 5.4 | 10 |
11 | 12 | 25 | 25 | 21 | 67 | 110 | 108 | 68 | 74 | 23 | 5.2 | 9.5 |
12 | 22 | 26 | 25 | 20 | 52 | 89 | 87 | 515 | 64 | 18 | 4.8 | 9.2 |
13 | 93 | 26 | 51 | 20 | 44 | 76 | 74 | 332 | 56 | 15 | 79 | 8.9 |
14 | 258 | 27 | 50 | 20 | 38 | 66 | 66 | 159 | 78 | 13 | 391 | 9.1 |
15 | 124 | 29 | 42 | 20 | 36 | 59 | 59 | 108 | 70 | 12 | 138 | 8.5 |
16 | 73 | 27 | 38 | 19 | 35 | 50 | 53 | 121 | 52 | 10 | 62 | 8.3 |
17 | 51 | 24 | 40 | e19 | 32 | 45 | 49 | 206 | 43 | 9.3 | 39 | 7.6 |
18 | 40 | 24 | 37 | e18 | 29 | 43 | 42 | 123 | 40 | 9.0 | 27 | 8.1 |
19 | 33 | 25 | 37 | e18 | 38 | 40 | 40 | 96 | 36 | 8.3 | 22 | 11 |
20 | 28 | 24 | 37 | e17 | 111 | 39 | 40 | 80 | 34 | 8.4 | 19 | 14 |
21 | 26 | 23 | 33 | 17 | 126 | 37 | 43 | 65 | 30 | 7.9 | 16 | 13 |
22 | 24 | 22 | 33 | 17 | 84 | 33 | 46 | 58 | 28 | 7.6 | 256 | 14 |
23 | 260 | 22 | 38 | 20 | 64 | 34 | 42 | 54 | 25 | 7.7 | 392 | 13 |
24 | 295 | 31 | 35 | 22 | 55 | 33 | 39 | 49 | 22 | 7.0 | 156 | 10 |
25 | 247 | 54 | e34 | 21 | 48 | 30 | 45 | 48 | 22 | 6.6 | 91 | 9.1 |
26 | 139 | 43 | e32 | 20 | 44 | 29 | 37 | 46 | 22 | 8.1 | 63 | 8.9 |
27 | 97 | 38 | 31 | 20 | 39 | 29 | 39 | 40 | 21 | 12 | 45 | 8.5 |
28 | 74 | 34 | 29 | 20 | 36 | 31 | 73 | 36 | 19 | 12 | 36 | 8.7 |
29 | 60 | 36 | 25 | 21 | --- | 38 | 57 | 36 | 17 | 14 | 27 | 8.6 |
30 | 52 | 45 | 26 | 20 | --- | 49 | 48 | 32 | 18 | 12 | 23 | 8.3 |
31 | 46 | --- | 25 | e21 | --- | 43 | --- | 28 | --- | 9.1 | 20 | --- |
TOTAL | 2160.6 | 923 | 1062 | 636 | 1216 | 1847 | 1848 | 2974 | 3172 | 430.7 | 1996.1 | 359.3 |
MEAN | 69.70 | 30.77 | 34.26 | 20.52 | 43.43 | 59.58 | 61.60 | 95.94 | 105.7 | 13.89 | 64.39 | 11.98 |
MAX | 295 | 54 | 51 | 24 | 126 | 270 | 244 | 515 | 986 | 59 | 392 | 31 |
MIN | 6.7 | 22 | 25 | 17 | 19 | 29 | 34 | 28 | 17 | 6.6 | 4.8 | 7.6 |
CFSM | 1.35 | 0.60 | 0.66 | 0.40 | 0.84 | 1.15 | 1.19 | 1.86 | 2.05 | 0.27 | 1.25 | 0.23 |
IN. | 1.55 | 0.66 | 0.76 | 0.46 | 0.87 | 1.33 | 1.33 | 2.14 | 2.28 | 0.31 | 1.44 | 0.26 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1961 - 2002, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 22.74 | 35.75 | 36.73 | 36.57 | 51.76 | 69.96 | 71.49 | 54.56 | 46.50 | 25.55 | 25.67 | 23.57 |
MAX | 99.3 | 151 | 159 | 134 | 170 | 303 | 186 | 148 | 159 | 113 | 141 | 170 |
(WY) | 1973 | 1986 | 1983 | 1969 | 1997 | 1979 | 1993 | 1996 | 1993 | 1996 | 1987 | 1972 |
MIN | 1.61 | 2.39 | 1.98 | 1.63 | 3.31 | 17.1 | 16.4 | 7.87 | 3.07 | 1.05 | 1.65 | 1.64 |
(WY) | 1964 | 1972 | 1964 | 1977 | 1963 | 1968 | 1977 | 1989 | 1977 | 1961 | 1964 | 1976 |
SUMMARY STATISTICS | FOR 2001 CALENDAR YEAR | FOR 2002 WATER YEAR | WATER YEARS 1961 - 2002 | |||
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ANNUAL TOTAL | 15656.0 | 18624.7 | ||||
ANNUAL MEAN | 42.89 | 51.03 | 42.08 | |||
HIGHEST ANNUAL MEAN | 76.7 | 1993 | ||||
LOWEST ANNUAL MEAN | 8.72 | 1977 | ||||
HIGHEST DAILY MEAN | 587 | Feb 10 | 986 | Jun 5 | 1620 | Feb 21 1997 |
LOWEST DAILY MEAN | 2.2 | Aug 15 | 4.8 | Aug 12 | 0.10 | A |
ANNUAL SEVEN-DAY MINIMUM | 2.8 | Aug 9 | 7.1 | Aug 6 | 0.23 | Aug 26 1961 |
MAXIMUM PEAK FLOW | 1430 | Jun 5 | 2580 B,C | Feb 21 1997 | ||
MAXIMUM PEAK STAGE | 6.73 | Jun 5 | 9.66 D | Feb 8 1965 | ||
INSTANTANEOUS LOW FLOW | 4.2 | Aug 12 | 0.10 | E | ||
ANNUAL RUNOFF (CFSM) | 0.83 | 0.99 | 0.81 | |||
ANNUAL RUNOFF (INCHES) | 11.27 | 13.40 | 11.06 | |||
10 PERCENT EXCEEDS | 86 | 97 | 89 | |||
50 PERCENT EXCEEDS | 28 | 31 | 22 | |||
90 PERCENT EXCEEDS | 5.1 | 9.1 | 4.4 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |