DISCHARGE: October 1978 to current year. |
STAGE: Water years 1994-2000. 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 1999 TO SEPTEMBER 2000 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 21 | 12 | 11 | 16 | e14 | 90 | 43 | 70 | 347 | 136 | 22 | 6.1 |
2 | 15 | 17 | 8.1 | 16 | e14 | 73 | 41 | 77 | 277 | 111 | 27 | 5.8 |
3 | 13 | 13 | 6.2 | 16 | e15 | 58 | 42 | 92 | 248 | 96 | 24 | 5.5 |
4 | 17 | 11 | 6.4 | 20 | e15 | 51 | 42 | 108 | 203 | 85 | 17 | 5.2 |
5 | 15 | 10 | 14 | 21 | e15 | 47 | 38 | 95 | 196 | 217 | e16 | 4.6 |
6 | 14 | 11 | 20 | 22 | e15 | 41 | 37 | 81 | 170 | 452 | e15 | 7.1 |
7 | 18 | 11 | 27 | 20 | e15 | 37 | 38 | 75 | 143 | 366 | 14 | 5.6 |
8 | 19 | 14 | 26 | 19 | e15 | 34 | 39 | 72 | 125 | 228 | 12 | 5.3 |
9 | 19 | 18 | 20 | 20 | e16 | 35 | 37 | 82 | 115 | 152 | 12 | 5.3 |
10 | 18 | 14 | 19 | 19 | e18 | 33 | 35 | 82 | 109 | 116 | 11 | 6.6 |
11 | 17 | 12 | 15 | 18 | e21 | 30 | 42 | 128 | 99 | 96 | 10 | 7.1 |
12 | 16 | 12 | 13 | 16 | e25 | 30 | 38 | 107 | 96 | 81 | 10 | 11 |
13 | 16 | 12 | 11 | 16 | e27 | 29 | 33 | 99 | 92 | 73 | 10 | 11 |
14 | 16 | 12 | 18 | 13 | e26 | 31 | 26 | 85 | 120 | 62 | 8.6 | 9.9 |
15 | 14 | 12 | 18 | 13 | e24 | 32 | 26 | 68 | 128 | 52 | 8.1 | 7.8 |
16 | 13 | 11 | 17 | 14 | e23 | 30 | 27 | 57 | 112 | 44 | 7.7 | 6.6 |
17 | 15 | 12 | 17 | 15 | e22 | 25 | 100 | 56 | 97 | 39 | 6.8 | 7.8 |
18 | 12 | 12 | 19 | e13 | e85 | 22 | 173 | 65 | 81 | 34 | 9.3 | 7.9 |
19 | 11 | 12 | 20 | e13 | e325 | 29 | 142 | 86 | 68 | 32 | 9.7 | 6.7 |
20 | 11 | 12 | 21 | e14 | 190 | 169 | 117 | 300 | 65 | 28 | 8.5 | 6.0 |
21 | 11 | 12 | 19 | e15 | 114 | 333 | 104 | 275 | 292 | 25 | 8.8 | 5.9 |
22 | 11 | 13 | 16 | e14 | 97 | 237 | 348 | 162 | 817 | 23 | 8.5 | 6.0 |
23 | 11 | 14 | e14 | e14 | 110 | 150 | 229 | 126 | 563 | 21 | 8.4 | 6.3 |
24 | 11 | 16 | e13 | e13 | 103 | 118 | 161 | 108 | 448 | 19 | 9.0 | 7.6 |
25 | 11 | 15 | e12 | e12 | 88 | 102 | 126 | 89 | 792 | 17 | 8.7 | 12 |
26 | 11 | 14 | e12 | e12 | 80 | 85 | 139 | 73 | 499 | 15 | 8.1 | 13 |
27 | 11 | 13 | e12 | e12 | 169 | 81 | 113 | 1100 | 337 | 13 | 7.6 | 12 |
28 | 11 | 13 | e13 | e13 | 169 | 75 | 97 | 2040 | 243 | 12 | 7.1 | 9.8 |
29 | 11 | 12 | e14 | e13 | 110 | 65 | 86 | 1110 | 188 | 11 | 7.1 | 12 |
30 | 11 | 12 | e15 | e14 | --- | 55 | 74 | 663 | 160 | 12 | 6.8 | 12 |
31 | 11 | --- | 16 | e14 | --- | 48 | --- | 463 | --- | 31 | 6.5 | --- |
TOTAL | 431 | 384 | 482.7 | 480 | 1960 | 2275 | 2593 | 8094 | 7230 | 2699 | 345.3 | 235.5 |
MEAN | 13.9 | 12.8 | 15.6 | 15.5 | 67.6 | 73.4 | 86.4 | 261 | 241 | 87.1 | 11.1 | 7.85 |
MAX | 21 | 18 | 27 | 22 | 325 | 333 | 348 | 2040 | 817 | 452 | 27 | 13 |
MIN | 11 | 10 | 6.2 | 12 | 14 | 22 | 26 | 56 | 65 | 11 | 6.5 | 4.6 |
CFSM | .03 | .03 | .04 | .04 | .16 | .17 | .20 | .60 | .56 | .20 | .03 | .02 |
IN. | .04 | .03 | .04 | .04 | .17 | .20 | .22 | .70 | .62 | .23 | .03 | .02 |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1979 - 2000, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | 130 | 318 | 374 | 350 | 541 | 771 | 698 | 689 | 452 | 286 | 179 | 96.6 |
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 | 12.4 | 9.54 | 15.6 | 15.5 | 67.6 | 73.4 | 86.4 | 92.1 | 27.0 | 12.8 | 11.1 | 7.85 |
(WY) | 1981 | 1981 | 2000 | 2000 | 2000 | 2000 | 2000 | 1988 | 1988 | 1988 | 2000 | 2000 |
SUMMARY STATISTICS | FOR 1999 CALENDAR YEAR | FOR 2000 WATER YEAR | WATER YEARS 1979 - 2000 | |||
---|---|---|---|---|---|---|
ANNUAL TOTAL | 104958.4 | 27209.5 | ||||
ANNUAL MEAN | 288 | 74.3 | 406 | |||
HIGHEST ANNUAL MEAN | 901 | 1993 | ||||
LOWEST ANNUAL MEAN | 74.3 | 2000 | ||||
HIGHEST DAILY MEAN | 3970 | Jan 24 | 2040 | May 28 | 14400 | Apr 13 1994 |
LOWEST DAILY MEAN | 5.4 | Sep 27 | 4.6 | Sep 5 | 4.5 | Nov 20 1980 |
ANNUAL SEVEN-DAY MINIMUM | 5.8 | Sep 21 | 5.5 | Sep 3 | 5.1 | Nov 16 1980 |
INSTANTANEOUS PEAK FLOW | 2900 | May 28 | 15500 | Apr 13 1994 | ||
INSTANTANEOUS PEAK STAGE | 6.11 | May 28 | 20.46 | Apr 13 1994 | ||
INSTANTANEOUS LOW FLOW | 4.2 | Sep 5 | ||||
ANNUAL RUNOFF (CFSM) | .67 | .17 | .94 | |||
ANNUAL RUNOFF (INCHES) | 9.04 | 2.34 | 12.78 | |||
10 PERCENT EXCEEDS | 748 | 164 | 969 | |||
50 PERCENT EXCEEDS | 44 | 19 | 150 | |||
90 PERCENT EXCEEDS | 11 | 8.6 | 15 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |