LOCATION.-- Lat 38°24'22", long 89°52'26" (NAD of 1927), in NE1/4NE1/4 sec.33, T.1 S., R.7 W., St. Clair County, Hydrologic Unit 07140204, on left bank at downstream side of bridge on State Highway 15, 2.2 mi southeast of Freeburg, 4.8 mi northwest of Fayetteville, and at mile 9.6. |
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DRAINAGE AREA.-- 464 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1970 to current year. |
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STAGE: Water years 1995 to current year. October 1980 to September 1994 (8:00 a.m. gage heights). |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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REVISED RECORDS.-- WDR IL-73-1: Drainage area. |
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GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter, and crest-stage gage. Datum of gage is 381.40 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, 15,300 ft3/s, May 19, 1995, gage height, 25.38 ft; no flow, Aug. 4-6, 1993, during period of backwater from the Mississippi River; minimum daily discharge unaffected by backwater, 0.41 ft3/s, Sept. 17, 1983. |
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REMARKS FOR CURRENT YEAR.-- Records good except those for 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 | 12 | 171 | 20 | 398 | e29 | e105 | 146 | 168 | 126 | 200 | 25 | 400 |
2 | 11 | 84 | 20 | 263 | e33 | e140 | 124 | 139 | 101 | 167 | 27 | 1100 |
3 | 9.6 | 57 | 19 | 153 | 39 | 253 | 103 | 117 | 111 | 114 | 32 | 1280 |
4 | 12 | 50 | 19 | 117 | 39 | 222 | 96 | 154 | 130 | 91 | 335 | 1430 |
5 | 22 | 50 | e18 | 99 | 39 | 191 | 282 | 998 | 119 | 79 | 961 | 1140 |
6 | 25 | 74 | e17 | 86 | 35 | 181 | 262 | 1220 | 107 | 82 | 1010 | 267 |
7 | 20 | 80 | e17 | 81 | 35 | 165 | 163 | 1440 | 110 | 61 | 489 | 115 |
8 | 15 | 61 | e18 | 86 | 29 | 132 | 160 | 1580 | 109 | 51 | 153 | 74 |
9 | 12 | 46 | e19 | 85 | e26 | 113 | 132 | 1480 | 92 | 46 | 81 | 55 |
10 | 11 | 48 | e22 | 77 | e25 | 101 | 113 | 1150 | 141 | 48 | 55 | 42 |
11 | 10 | 41 | 24 | 66 | e24 | 91 | 107 | 1100 | 1360 | 88 | 43 | 37 |
12 | 8.6 | 37 | 23 | 57 | e23 | 160 | 94 | 1290 | 3450 | 69 | 35 | 30 |
13 | 8.4 | 31 | 23 | e46 | e23 | 456 | 83 | 1700 | 5390 | 47 | 29 | 25 |
14 | 8.4 | 27 | 24 | e41 | e26 | 744 | 73 | 1750 | 3940 | 40 | 26 | 22 |
15 | 9.5 | 27 | 25 | e37 | e75 | 588 | 67 | 1310 | 3080 | 37 | 25 | 22 |
16 | 9.1 | 29 | 26 | e32 | 189 | 351 | 64 | 433 | 2930 | 34 | 23 | 21 |
17 | 9.3 | 34 | 25 | e29 | 198 | 229 | 94 | 227 | 2600 | 31 | 22 | 19 |
18 | 7.8 | 32 | 24 | e27 | 251 | 175 | 127 | 187 | 2020 | 43 | 22 | 17 |
19 | 13 | 29 | 38 | e26 | 242 | 251 | 100 | 167 | 998 | 419 | 21 | 16 |
20 | 51 | 27 | 128 | e25 | 659 | 702 | 92 | 152 | 278 | 819 | 19 | 16 |
21 | 35 | 26 | 115 | e24 | 949 | 807 | 150 | 136 | 183 | 689 | 18 | 16 |
22 | 19 | 24 | 81 | e22 | 972 | 595 | 193 | 121 | 144 | 249 | 17 | 18 |
23 | 12 | 23 | 57 | e21 | 720 | 361 | 150 | 111 | 117 | 107 | 15 | 16 |
24 | 9.9 | 22 | e40 | e21 | 386 | 246 | 119 | 101 | 96 | 67 | 14 | 14 |
25 | 105 | 21 | e34 | e20 | 235 | 190 | 209 | 257 | 81 | 50 | 14 | 13 |
26 | 756 | 22 | e31 | e20 | e145 | 189 | 333 | 583 | 660 | 41 | 14 | 15 |
27 | 300 | 21 | e30 | e21 | e125 | 181 | 595 | 369 | 1270 | 34 | 14 | 527 |
28 | 92 | 21 | e29 | e22 | e110 | 159 | 372 | 218 | 1470 | 30 | 13 | 625 |
29 | 407 | 20 | e32 | e23 | --- | 193 | 278 | 165 | 1370 | 28 | 74 | 145 |
30 | 1030 | 20 | e40 | e25 | --- | 216 | 229 | 184 | 517 | 27 | 88 | 50 |
31 | 647 | --- | 104 | e26 | --- | 173 | --- | 147 | --- | 26 | 208 | --- |
TOTAL | 3697.6 | 1255 | 1142 | 2076 | 5681 | 8660 | 5110 | 19154 | 33100 | 3914 | 3922 | 7567 |
MEAN | 119 | 41.8 | 36.8 | 67.0 | 203 | 279 | 170 | 618 | 1103 | 126 | 127 | 252 |
MAX | 1030 | 171 | 128 | 398 | 972 | 807 | 595 | 1750 | 5390 | 819 | 1010 | 1430 |
MIN | 7.8 | 20 | 17 | 20 | 23 | 91 | 64 | 101 | 81 | 26 | 13 | 13 |
CFSM | 0.26 | 0.09 | 0.08 | 0.14 | 0.44 | 0.60 | 0.37 | 1.33 | 2.38 | 0.27 | 0.27 | 0.54 |
IN. | 0.30 | 0.10 | 0.09 | 0.17 | 0.46 | 0.69 | 0.41 | 1.54 | 2.65 | 0.31 | 0.31 | 0.61 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1971 - 2003, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 95.5 | 270 | 420 | 376 | 597 | 667 | 674 | 555 | 366 | 163 | 122 | 99.4 |
MAX | 506 | 1543 | 2380 | 1438 | 1954 | 2390 | 1771 | 3579 | 1214 | 902 | 822 | 1142 |
(WY) | 1987 | 1994 | 1983 | 1974 | 1982 | 1978 | 1979 | 1995 | 1998 | 2000 | 1998 | 1993 |
MIN | 2.55 | 2.21 | 6.86 | 3.87 | 42.2 | 34.5 | 45.3 | 25.4 | 12.4 | 12.9 | 10.7 | 4.31 |
(WY) | 1972 | 1972 | 1977 | 1977 | 1978 | 1981 | 1981 | 1976 | 1988 | 1976 | 1971 | 1983 |
SUMMARY STATISTICS | FOR 2002 CALENDAR YEAR | FOR 2003 WATER YEAR | WATER YEARS 1971 - 2003 | |||
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ANNUAL TOTAL | 153373.6 | 95278.6 | ||||
ANNUAL MEAN | 420 | 261 | 365 | |||
HIGHEST ANNUAL MEAN | 660 | 1973 | ||||
LOWEST ANNUAL MEAN | 74.6 | 1976 | ||||
HIGHEST DAILY MEAN | 7210 | May 11 | 5390 | Jun 13 | 15000 | May 19 1995 |
LOWEST DAILY MEAN | 7.8 | Oct 18 | 7.8 | Oct 18 | 0.00 | A |
ANNUAL SEVEN-DAY MINIMUM | 8.7 | Oct 12 | 8.7 | Oct 12 | 0.75 | Sep 15 1983 |
MAXIMUM PEAK FLOW | 5730 | Jun 13 | 15300 | May 19 1995 | ||
MAXIMUM PEAK STAGE | 17.81 | Jun 13 | 25.38 | May 19 1995 | ||
INSTANTANEOUS LOW FLOW | 7.2 | Oct 18 | ||||
ANNUAL RUNOFF (CFSM) | 0.91 | 0.56 | 0.79 | |||
ANNUAL RUNOFF (INCHES) | 12.30 | 7.64 | 10.70 | |||
10 PERCENT EXCEEDS | 1200 | 730 | 1050 | |||
50 PERCENT EXCEEDS | 71 | 81 | 74 | |||
90 PERCENT EXCEEDS | 17 | 18 | 9.2 |
A - Aug. 4-6, 1993, during period of backwater from Mississippi River. Minimum daily discharge unaffected by backwater, 0.4 ft3/s, Sept. 17, 1983. |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |