LOCATION.-- Lat 40°08'14", long 87°44'45" (NAD of 1927), in NE1/4SW1/4 sec.5, T.19 N., R.12 W., Vermilion County, Hydrologic Unit 05120109, on right bank 150 ft upstream from Kickapoo State Park Road bridge, 1.0 mi upstream from Interstate Highway 74 bridge, 2.0 mi northeast of Oakwood, and at mile 31.7. |
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DRAINAGE AREA.-- 432 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1978 to current year. |
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STAGE: Water years 1994 to current year. Gage-height records for January 1972 to Nov. 8, 1978, available in files of Illinois Office of Water Resources. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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SPECIFIC CONDUCTANCE: Water year 1979. |
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WATER TEMPERATURE: Water year 1979. |
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GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 544.42 ft above NGVD of 1929 (levels by Illinois Office of Water Resources). |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 15,500 ft3/s, Apr. 13, 1994, gage height, 20.46 ft; minimum daily, 4.5 ft3/s, Nov. 20, 1980. |
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REMARKS FOR CURRENT YEAR.-- Records good except for those estimated daily discharges, which are poor. |
Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 27 | 25 | 27 | 276 | e76 | e97 | 105 | 165 | 463 | 89 | 127 | 6290 |
2 | 27 | 25 | 27 | 199 | e85 | e103 | 107 | 158 | 335 | 104 | 115 | 5910 |
3 | 27 | 22 | e26 | 145 | e94 | e92 | 102 | 159 | 274 | 140 | 280 | 2890 |
4 | 29 | 26 | e25 | 104 | e108 | e96 | 99 | 151 | 253 | 101 | 1110 | 1140 |
5 | 30 | 28 | e24 | 103 | e130 | e150 | 304 | 560 | 223 | 81 | 974 | 739 |
6 | 27 | 27 | e23 | 98 | e111 | e180 | 712 | 854 | 198 | 883 | 515 | 527 |
7 | 25 | 26 | e22 | 87 | e95 | e183 | 506 | 598 | 185 | 1830 | 350 | 395 |
8 | 25 | 24 | e22 | 77 | e83 | e230 | 891 | 436 | 161 | 875 | 260 | 299 |
9 | 25 | 24 | e24 | 124 | e74 | e310 | 732 | 894 | 142 | 1990 | 365 | 230 |
10 | 24 | 29 | e25 | 165 | e67 | e255 | 527 | 1790 | 128 | 4280 | 236 | 196 |
11 | 22 | 28 | 24 | e89 | e59 | e190 | 405 | 2040 | 124 | 3350 | 175 | 168 |
12 | 21 | 26 | 24 | e100 | e53 | e172 | 330 | 1230 | 2350 | 3260 | 141 | 147 |
13 | 20 | 53 | 24 | e120 | e54 | e250 | 269 | 765 | 888 | 1810 | 122 | 132 |
14 | 19 | 45 | 24 | e107 | e58 | 305 | 227 | 571 | 1090 | 735 | 121 | 123 |
15 | 19 | 41 | 24 | e98 | e62 | 234 | 206 | 583 | 1010 | 567 | 124 | 113 |
16 | e19 | 36 | 23 | e87 | e56 | 211 | 189 | 639 | 598 | 485 | 112 | 99 |
17 | 19 | 33 | 22 | e81 | e50 | 222 | 185 | 477 | 415 | 338 | 93 | 86 |
18 | 20 | 30 | 29 | e75 | e53 | 226 | 169 | 376 | 329 | 2350 | 82 | 78 |
19 | 23 | 31 | 31 | e70 | e57 | 209 | 152 | 329 | 279 | 2920 | 74 | 72 |
20 | 21 | 31 | 117 | e66 | e65 | 197 | 160 | 321 | 241 | 1800 | 64 | 67 |
21 | 19 | 33 | 182 | e62 | e79 | 169 | 170 | 345 | 218 | 822 | 59 | 62 |
22 | 19 | 33 | 128 | e59 | e105 | 246 | 169 | 336 | 192 | 634 | 54 | 68 |
23 | 19 | 32 | 93 | e56 | e170 | 250 | 150 | 276 | 175 | 465 | 50 | 69 |
24 | 19 | 31 | 72 | e53 | e146 | 193 | 133 | 243 | 160 | 349 | 46 | 146 |
25 | 24 | 30 | e59 | e54 | e130 | 168 | 165 | 219 | 154 | 280 | 42 | 292 |
26 | 25 | 30 | e64 | e54 | e113 | 153 | 274 | 202 | 139 | 237 | 38 | 290 |
27 | 23 | 30 | e68 | e55 | e105 | 150 | 245 | 185 | 132 | 208 | 37 | 2870 |
28 | 22 | 29 | e54 | e56 | e95 | 146 | 210 | 187 | 125 | 191 | 34 | 1150 |
29 | 23 | 29 | e46 | e59 | --- | 135 | 229 | 446 | 115 | 178 | 1030 | 628 |
30 | 24 | 29 | e43 | e63 | --- | 125 | 201 | 354 | 100 | 161 | 2970 | 435 |
31 | 24 | --- | 120 | e69 | --- | 113 | --- | 364 | --- | 142 | 910 | --- |
TOTAL | 710 | 916 | 1516 | 2911 | 2433 | 5760 | 8323 | 16253 | 11196 | 31655 | 10710 | 25711 |
MEAN | 22.9 | 30.5 | 48.9 | 93.9 | 86.9 | 186 | 277 | 524 | 373 | 1021 | 345 | 857 |
MAX | 30 | 53 | 182 | 276 | 170 | 310 | 891 | 2040 | 2350 | 4280 | 2970 | 6290 |
MIN | 19 | 22 | 22 | 53 | 50 | 92 | 99 | 151 | 100 | 81 | 34 | 62 |
CFSM | 0.05 | 0.07 | 0.11 | 0.22 | 0.20 | 0.43 | 0.64 | 1.21 | 0.86 | 2.36 | 0.80 | 1.98 |
IN. | 0.06 | 0.08 | 0.13 | 0.25 | 0.21 | 0.50 | 0.72 | 1.40 | 0.96 | 2.73 | 0.92 | 2.21 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1979 - 2003, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 150 | 291 | 351 | 325 | 577 | 731 | 674 | 678 | 444 | 300 | 201 | 123 |
MAX | 1088 | 2278 | 1097 | 1679 | 2580 | 2088 | 2384 | 1656 | 1446 | 1320 | 1060 | 1116 |
(WY) | 1994 | 1986 | 1991 | 1993 | 1982 | 1979 | 1994 | 1995 | 1998 | 1993 | 1981 | 1993 |
MIN | 9.73 | 9.54 | 15.6 | 15.5 | 67.6 | 73.4 | 86.4 | 92.1 | 27.0 | 12.8 | 11.1 | 7.85 |
(WY) | 2001 | 1981 | 2000 | 2000 | 2000 | 2000 | 2000 | 1988 | 1988 | 1988 | 2000 | 2000 |
SUMMARY STATISTICS | FOR 2002 CALENDAR YEAR | FOR 2003 WATER YEAR | WATER YEARS 1979 - 2003 | |||
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ANNUAL TOTAL | 159473 | 118094 | ||||
ANNUAL MEAN | 437 | 324 | 403 | |||
HIGHEST ANNUAL MEAN | 901 | 1993 | ||||
LOWEST ANNUAL MEAN | 74.3 | 2000 | ||||
HIGHEST DAILY MEAN | 4490 | Aug 23 | 6290 | Sep 1 | 14400 | Apr 13 1994 |
LOWEST DAILY MEAN | 17 | Aug 13 | 19 | A | 4.5 | Nov 20 1980 |
ANNUAL SEVEN-DAY MINIMUM | 20 | Oct 12 | 20 | Oct 12 | 5.1 | Nov 16 1980 |
MAXIMUM PEAK FLOW | 7490 | Sep 1 | 15500 | Apr 13 1994 | ||
MAXIMUM PEAK STAGE | 12.07 | Sep 1 | 20.46 | Apr 13 1994 | ||
INSTANTANEOUS LOW FLOW | 9.7 B | Dec 3 | ||||
ANNUAL RUNOFF (CFSM) | 1.01 | 0.75 | 0.93 | |||
ANNUAL RUNOFF (INCHES) | 13.73 | 10.17 | 12.66 | |||
10 PERCENT EXCEEDS | 1010 | 733 | 954 | |||
50 PERCENT EXCEEDS | 145 | 124 | 150 | |||
90 PERCENT EXCEEDS | 24 | 25 | 15 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |