DISCHARGE: October 1978 to current year. |
STAGE: Water years 1994-2001. Gage-height records for January 1972 to Nov. 8, 1978, available in files of Illinois Office of Water Resources. |
CHEMICAL: Water years 1978-91. |
SPECIFIC CONDUCTANCE: Water year 1979. |
WATER TEMPERATURE: Water year 1979. |
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 2000 TO SEPTEMBER 2001 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 8.8 | 8.3 | 33 | e21 | e1000 | 1010 | 171 | e118 | 192 | 56 | 26 | 75 |
2 | 6.9 | 8.6 | 31 | e21 | e700 | 735 | 159 | e120 | 208 | 50 | 23 | 50 |
3 | 6.2 | 8.8 | 30 | e23 | e500 | 588 | 144 | e107 | 318 | 54 | 26 | e35 |
4 | 7.4 | 8.6 | 28 | e24 | e400 | 490 | 134 | e91 | 353 | 88 | 30 | 23 |
5 | e14 | 9.1 | 26 | e25 | e340 | 420 | 125 | e86 | 474 | 166 | 31 | 17 |
6 | e17 | 9.1 | e28 | e25 | e300 | 350 | 215 | e101 | 784 | 135 | 21 | 13 |
7 | e20 | 12 | e29 | e25 | e280 | 300 | 1850 | e103 | 1710 | 92 | 13 | e30 |
8 | e17 | 12 | e30 | e24 | 685 | 268 | 1920 | e94 | 1180 | 73 | 13 | e120 |
9 | e15 | 23 | e30 | e22 | 2220 | 247 | 828 | e91 | 689 | 65 | 16 | e200 |
10 | e13 | 56 | e29 | e21 | 3130 | 222 | 664 | e80 | 494 | 363 | 14 | e260 |
11 | 12 | 157 | e27 | e20 | 2960 | 208 | 1100 | e78 | 385 | 308 | 14 | 113 |
12 | 11 | 156 | e50 | e19 | 1320 | 202 | 1640 | e94 | 319 | 181 | 13 | 71 |
13 | 9.6 | 103 | e80 | e20 | 694 | 204 | 954 | e87 | 269 | 112 | 12 | 48 |
14 | 8.4 | 86 | e120 | e30 | 1150 | 205 | 615 | e69 | 233 | 77 | 10 | 35 |
15 | 9.0 | 91 | e90 | e45 | 2290 | 188 | 508 | e68 | 207 | 60 | 9.0 | 29 |
16 | 9.1 | 84 | e60 | e70 | 1460 | 226 | 490 | e58 | 190 | 48 | 9.8 | 24 |
17 | 9.7 | 64 | e45 | e150 | 901 | 519 | 428 | e73 | 163 | 38 | 9.0 | 22 |
18 | 9.2 | 50 | e37 | e110 | 562 | 669 | 361 | e188 | 141 | 32 | 11 | 21 |
19 | 8.9 | 42 | e34 | e80 | 430 | 597 | 322 | e317 | 128 | 27 | 13 | 31 |
20 | 8.3 | 34 | e31 | e60 | 342 | 485 | e287 | 330 | 124 | 26 | 21 | 44 |
21 | 7.8 | 28 | e30 | e45 | 284 | 405 | e258 | 239 | 124 | 24 | 23 | 37 |
22 | 7.1 | 34 | e29 | e38 | 246 | 346 | e235 | 204 | 152 | 23 | 20 | 28 |
23 | 7.4 | 33 | e28 | e33 | 228 | 301 | e213 | 163 | 186 | e26 | 24 | 24 |
24 | 8.0 | 30 | e27 | e30 | 441 | 269 | e189 | 137 | 141 | e30 | 19 | 20 |
25 | 7.4 | 29 | e26 | e28 | 4690 | 237 | e168 | 132 | 113 | 26 | 46 | 18 |
26 | 7.0 | 31 | e25 | e26 | 4310 | 213 | e148 | 130 | 91 | 28 | 52 | 17 |
27 | 6.8 | 33 | e24 | e24 | 4270 | 198 | e144 | 236 | 79 | 15 | 80 | 16 |
28 | 7.1 | 34 | e23 | e40 | 2420 | 188 | e134 | 505 | 76 | 22 | 40 | 15 |
29 | 7.1 | 36 | e22 | e80 | --- | 179 | e119 | 358 | 68 | 139 | 26 | 14 |
30 | 7.5 | 34 | e22 | e500 | --- | 179 | e112 | 253 | 61 | 71 | 23 | 13 |
31 | 7.9 | --- | e21 | e1400 | --- | 174 | --- | 206 | --- | 39 | 99 | --- |
TOTAL | 301.6 | 1344.5 | 1145 | 3079 | 38553 | 10822 | 14635 | 4916 | 9652 | 2494 | 786.8 | 1463 |
MEAN | 9.73 | 44.8 | 36.9 | 99.3 | 1377 | 349 | 488 | 159 | 322 | 80.5 | 25.4 | 48.8 |
MAX | 20 | 157 | 120 | 1400 | 4690 | 1010 | 1920 | 505 | 1710 | 363 | 99 | 260 |
MIN | 6.2 | 8.3 | 21 | 19 | 228 | 174 | 112 | 58 | 61 | 15 | 9.0 | 13 |
CFSM | .02 | .10 | .09 | .23 | 3.19 | .81 | 1.13 | .37 | .74 | .19 | .06 | .11 |
IN. | .03 | .12 | .10 | .27 | 3.32 | .93 | 1.26 | .42 | .83 | .21 | .07 | .13 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1979 - 2001, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 125 | 306 | 359 | 339 | 577 | 752 | 689 | 666 | 447 | 277 | 173 | 94.5 |
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 2000 CALENDAR YEAR | FOR 2001 WATER YEAR | WATER YEARS 1979 - 2001 | |||
---|---|---|---|---|---|---|
ANNUAL TOTAL | 28702.9 | 89191.9 | ||||
ANNUAL MEAN | 78.4 | 244 | 399 | |||
HIGHEST ANNUAL MEAN | 901 | 1993 | ||||
LOWEST ANNUAL MEAN | 74.3 | 2000 | ||||
HIGHEST DAILY MEAN | 2040 | May 28 | 4690 | Feb 25 | 14400 | Apr 13 1994 |
LOWEST DAILY MEAN | 4.6 | Sep 5 | 6.2 | Oct 3 | 4.5 | Nov 20 1980 |
ANNUAL SEVEN-DAY MINIMUM | 5.5 | Sep 3 | 7.3 | Oct 22 | 5.1 | Nov 16 1980 |
MAXIMUM PEAK FLOW | 4900 | Feb 25 | 15500 | Apr 13 1994 | ||
MAXIMUM PEAK STAGE | 8.28 | Feb 25 | 20.46 | Apr 13 1994 | ||
INSTANTANEOUS LOW FLOW | 5.9 | A | ||||
ANNUAL RUNOFF (CFSM) | .18 | .57 | .92 | |||
ANNUAL RUNOFF (INCHES) | 2.47 | 7.68 | 12.56 | |||
10 PERCENT EXCEEDS | 164 | 512 | 950 | |||
50 PERCENT EXCEEDS | 29 | 68 | 147 | |||
90 PERCENT EXCEEDS | 7.8 | 12 | 15 |
A - Oct. 4; Dec. 5, result of freeze-up. |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |