LOCATION.-- Lat 39°47'29", long 88°11'08" (NAD of 1927), in NE1/4NW1/4 sec.3, T.15 N., R.9 E., Douglas County, Hydrologic Unit 05120112, on left bank at downstream side of bridge on U.S. Highway 36, 2.0 mi southwest of Camargo, 5.7 miles east of Tuscola, and at mile 166.5. |
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DRAINAGE AREA.-- 186 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1960 to current year. |
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STAGE: Water years 1994 to current year. |
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REVISED RECORDS.-- WDR IL-75-1: Drainage area. |
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GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 622.30 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, 8,040 ft3/s, Apr. 12, 1994, gage height, 17.33 ft; no flow for many days in most years. |
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REMARKS FOR CURRENT YEAR.-- Records fair 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 | 0.57 | 11 | 16 | 46 | e7.5 | e26 | 28 | 18 | 97 | 51 | 16 | 154 |
2 | 0.55 | 6.6 | 15 | 32 | e8.5 | e26 | 29 | 24 | 73 | 40 | 15 | 587 |
3 | 0.50 | 5.5 | 15 | 25 | e9.5 | e24 | 28 | 25 | 66 | 33 | 15 | 777 |
4 | 0.59 | 4.5 | 14 | 21 | e12 | e23 | 27 | 21 | 65 | 28 | 24 | 528 |
5 | 0.88 | 6.7 | e13 | 19 | e15 | e23 | 33 | 223 | 57 | 24 | 19 | 208 |
6 | 4.2 | 11 | e12 | 19 | e25 | e25 | 34 | 517 | 49 | 35 | 15 | 97 |
7 | 2.0 | 18 | e11 | 17 | e22 | e30 | 29 | 418 | 50 | 76 | 15 | 63 |
8 | 1.1 | 14 | e10 | 15 | e19 | e40 | 38 | 349 | 51 | 51 | 17 | 46 |
9 | 0.68 | 12 | e10 | 16 | e15 | 56 | 33 | 264 | 45 | 64 | 13 | 35 |
10 | 0.47 | 13 | e12 | 17 | e14 | 54 | 28 | 549 | 42 | 511 | 11 | 28 |
11 | 0.39 | 21 | 14 | e12 | e14 | 45 | 26 | 1100 | 43 | 825 | 9.3 | 24 |
12 | 0.35 | e11 | 17 | e11 | e13 | 41 | 25 | 702 | 74 | 643 | 9.5 | 20 |
13 | 0.31 | e7.0 | 17 | e9.8 | e13 | 57 | 23 | 431 | 157 | 315 | 9.9 | 18 |
14 | 0.30 | e5.0 | 16 | e9.0 | e14 | 218 | 19 | 280 | 201 | 151 | 8.3 | 18 |
15 | 0.30 | e6.0 | e14 | e8.4 | e15 | 184 | 18 | 300 | 241 | 99 | 8.2 | 17 |
16 | 0.36 | e7.5 | e13 | e7.8 | e17 | 137 | 19 | 292 | 232 | 72 | 7.0 | 15 |
17 | 0.35 | e10 | 15 | e7.3 | e17 | 112 | 20 | 228 | 175 | 53 | 6.0 | 13 |
18 | 0.42 | e7.0 | 15 | e6.8 | e16 | 94 | 21 | 181 | 128 | 48 | 5.5 | 11 |
19 | 1.2 | e6.0 | 34 | e6.4 | e16 | 81 | 18 | 153 | 104 | 130 | 5.3 | 11 |
20 | 17 | e6.5 | 46 | e6.1 | e18 | 77 | 18 | 135 | 88 | 91 | 4.2 | 11 |
21 | 5.9 | e7.5 | 33 | e5.8 | e22 | 72 | 25 | 130 | 71 | 76 | 4.2 | 10 |
22 | 2.0 | e9.0 | 21 | e5.5 | e40 | 60 | 24 | 116 | 61 | 140 | 3.7 | 11 |
23 | 1.3 | e11 | 12 | e5.2 | e85 | 51 | 19 | 105 | 55 | 97 | 3.5 | 14 |
24 | 1.1 | e13 | 8.7 | e5.0 | e65 | 46 | 15 | 96 | 49 | 59 | 3.5 | 12 |
25 | 1.4 | e15 | 9.8 | e4.8 | e53 | 43 | 18 | 90 | 44 | 43 | 3.4 | 11 |
26 | 6.2 | 16 | 7.1 | e4.8 | e42 | 40 | 35 | 82 | 41 | 34 | 3.3 | 11 |
27 | 9.0 | 16 | 8.2 | e5.0 | e35 | 36 | 31 | 73 | 39 | 29 | 3.8 | 55 |
28 | 4.1 | 15 | 7.8 | e5.2 | e30 | 37 | 24 | 69 | 35 | 27 | 4.3 | 137 |
29 | 4.3 | 15 | 7.0 | e5.5 | --- | 39 | 21 | 70 | 32 | 26 | 4.8 | 83 |
30 | 8.8 | 16 | 9.4 | e6.0 | --- | 34 | 19 | 66 | 40 | 22 | 16 | 51 |
31 | 17 | --- | 35 | e6.5 | --- | 28 | --- | 77 | --- | 18 | 34 | --- |
TOTAL | 93.62 | 322.8 | 488.0 | 370.9 | 672.5 | 1859 | 745 | 7184 | 2505 | 3911 | 317.7 | 3076 |
MEAN | 3.02 | 10.8 | 15.7 | 12.0 | 24.0 | 60.0 | 24.8 | 232 | 83.5 | 126 | 10.2 | 103 |
MAX | 17 | 21 | 46 | 46 | 85 | 218 | 38 | 1100 | 241 | 825 | 34 | 777 |
MIN | 0.30 | 4.5 | 7.0 | 4.8 | 7.5 | 23 | 15 | 18 | 32 | 18 | 3.3 | 10 |
CFSM | 0.02 | 0.06 | 0.08 | 0.06 | 0.13 | 0.32 | 0.13 | 1.25 | 0.45 | 0.68 | 0.06 | 0.55 |
IN. | 0.02 | 0.06 | 0.10 | 0.07 | 0.13 | 0.37 | 0.15 | 1.44 | 0.50 | 0.78 | 0.06 | 0.62 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1961 - 2003, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 55.2 | 111 | 191 | 170 | 238 | 258 | 300 | 297 | 180 | 101 | 58.9 | 44.6 |
MAX | 570 | 910 | 691 | 684 | 650 | 861 | 893 | 1263 | 773 | 487 | 315 | 422 |
(WY) | 1994 | 1993 | 1984 | 1974 | 1985 | 1979 | 2002 | 1996 | 1974 | 1992 | 1979 | 1993 |
MIN | 0.000 | 0.92 | 1.05 | 0.63 | 4.11 | 60.0 | 24.8 | 36.5 | 14.3 | 9.59 | 0.12 | 0.020 |
(WY) | 1961 | 1961 | 1961 | 1977 | 1963 | 2003 | 2003 | 1976 | 1988 | 1988 | 1964 | 1964 |
SUMMARY STATISTICS | FOR 2002 CALENDAR YEAR | FOR 2003 WATER YEAR | WATER YEARS 1961 - 2003 | |||
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ANNUAL TOTAL | 100053.24 | 21545.52 | ||||
ANNUAL MEAN | 274 | 59.0 | 167 | |||
HIGHEST ANNUAL MEAN | 357 | 1993 | ||||
LOWEST ANNUAL MEAN | 57.6 | 2000 | ||||
HIGHEST DAILY MEAN | 7000 | May 13 | 1100 | May 11 | 7000 | May 13 2002 |
LOWEST DAILY MEAN | 0.30 | Oct 14,15 | 0.30 | Oct 14,15 | 0.00 | A |
ANNUAL SEVEN-DAY MINIMUM | 0.34 | Oct 11 | 0.34 | Oct 11 | 0.00 | A |
MAXIMUM PEAK FLOW | 1230 | May 11 | 8040 | Apr 12 1994 | ||
MAXIMUM PEAK STAGE | 9.42 | May 11 | 17.33 | Apr 12 1994 | ||
INSTANTANEOUS LOW FLOW | 0.27 | Oct 13-15 | ||||
ANNUAL RUNOFF (CFSM) | 1.47 | 0.32 | 0.90 | |||
ANNUAL RUNOFF (INCHES) | 20.01 | 4.31 | 12.17 | |||
10 PERCENT EXCEEDS | 744 | 132 | 428 | |||
50 PERCENT EXCEEDS | 42 | 19 | 60 | |||
90 PERCENT EXCEEDS | 1.3 | 4.8 | 2.9 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |