LOCATION.-- Lat 39°30'24", long 88°31'39" (NAD of 1927), in SE1/4SE1/4 sec.4, T.12 N., R.6 E., Moultrie County, Hydrologic Unit 07140201, on left downstream side of bridge on County Highway 3, 3.2 mi south of Allenville, and at mile 5.8. | |
DRAINAGE AREA.-- 34.6 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: February 1980 to current year. | |
STAGE: Water years 1994-2002. Gage-height record for January 1963 to February 1980 available in files of U.S. Army Corps of Engineers. | |
REVISED RECORDS.-- WDR IL-81-1: 1980. | |
GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter. Datum of gage is 617.00 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers). | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISHCARGE AND STAGE: Maximum discharge, 3,260 ft3/s, May 12, 2002, gage height, 13.38 ft, from rating curve extended above 1,890 ft3/s; no flow for many days in most years. | |
EXTREMES OUTSIDE PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Flood of July 1971 reached a stage of 13.67 ft, discharge not determined, from information by U.S. Army Corps of Engineers. | |
REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. | |
| DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
DAILY MEAN VALUES | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | 0.14 | 32 | 112 | e17 | 448 | e14 | 68 | 181 | 44 | 6.5 | 0.18 | 0.00 |
| 2 | 0.16 | 28 | 73 | e15 | 186 | 59 | 53 | 197 | 27 | 5.8 | 0.20 | 0.00 |
| 3 | 0.12 | 24 | 55 | e14 | 120 | 132 | 38 | 102 | 22 | 5.2 | 0.18 | 0.00 |
| 4 | 0.08 | 22 | 44 | e13 | 79 | 61 | 32 | 71 | 20 | 4.4 | 0.16 | 0.00 |
| 5 | 0.81 | 21 | 36 | e12 | 51 | 40 | 28 | 55 | 19 | 3.7 | 0.16 | 0.00 |
| 6 | 1.0 | 21 | 32 | e11 | 41 | 41 | 26 | 756 | 17 | 2.7 | 0.15 | 0.00 |
| 7 | 2.5 | 20 | 29 | e10 | 35 | 37 | 25 | 1400 | 15 | 2.1 | 0.13 | 0.00 |
| 8 | 2.1 | 19 | 26 | e12 | 29 | 30 | 43 | 441 | 14 | 1.7 | 0.07 | 0.00 |
| 9 | 1.2 | 17 | 22 | e10 | 27 | 195 | 71 | 406 | 14 | 1.3 | 0.02 | 0.00 |
| 10 | 1.3 | 18 | 21 | e9.5 | 25 | 150 | 49 | 175 | 13 | 1.1 | 0.00 | 0.00 |
| 11 | 3.0 | 17 | 20 | 10 | 22 | 84 | 39 | 138 | 30 | 0.92 | 0.00 | 0.00 |
| 12 | 89 | 15 | 21 | 11 | 22 | 61 | 34 | 1300 | 135 | 0.83 | 0.00 | 0.00 |
| 13 | 127 | 15 | 50 | 10 | 19 | 49 | 36 | 668 | 94 | 0.64 | 0.00 | 0.00 |
| 14 | 486 | 15 | 107 | 11 | 17 | 39 | 33 | 256 | 59 | 0.49 | 0.00 | 0.00 |
| 15 | 196 | 15 | 126 | 9.3 | 17 | 35 | 29 | 140 | 38 | 0.39 | 0.00 | 0.00 |
| 16 | 236 | 14 | 153 | 8.9 | 16 | 57 | 24 | 96 | 28 | 0.33 | 0.00 | 0.00 |
| 17 | 151 | 14 | 596 | 9.1 | 15 | 48 | 22 | 72 | 22 | 0.37 | 0.00 | 0.00 |
| 18 | 101 | 14 | 348 | 9.8 | 14 | 37 | 21 | 58 | 19 | 0.45 | 0.00 | 0.00 |
| 19 | 74 | 14 | 182 | 9.3 | 16 | 32 | 20 | 47 | 17 | 0.30 | 0.00 | 0.00 |
| 20 | 55 | 13 | 112 | 9.0 | 54 | 35 | 21 | 39 | 15 | 0.28 | 0.00 | 0.00 |
| 21 | 43 | 14 | 77 | 9.0 | 46 | 32 | 377 | 34 | 14 | 0.28 | 0.00 | 0.00 |
| 22 | 35 | 14 | 62 | 8.4 | 30 | 27 | 287 | 31 | 13 | 3.5 | 0.00 | 0.00 |
| 23 | 91 | 13 | 54 | 8.6 | 25 | 26 | 146 | 29 | 13 | 6.3 | 0.00 | 0.00 |
| 24 | 227 | 15 | 43 | 8.8 | 22 | 25 | 209 | 26 | 12 | 2.5 | 0.07 | 0.00 |
| 25 | 276 | 20 | e29 | 8.1 | 20 | 178 | 314 | 24 | 14 | 0.61 | 0.01 | 0.00 |
| 26 | 130 | 15 | e24 | 8.0 | e17 | 139 | 116 | 20 | 12 | 0.39 | 0.00 | 0.00 |
| 27 | 81 | 15 | e21 | 8.0 | e16 | 100 | 319 | 29 | 11 | 0.54 | 0.00 | 0.00 |
| 28 | 58 | 31 | e18 | 8.0 | e15 | 241 | 1000 | 112 | 9.3 | 0.44 | 0.00 | 0.00 |
| 29 | 45 | 81 | e20 | 8.4 | --- | 255 | 261 | 55 | 8.1 | 0.30 | 0.00 | 0.00 |
| 30 | 37 | 174 | e18 | 26 | --- | 169 | 154 | 36 | 7.5 | 0.25 | 0.00 | 0.00 |
| 31 | 34 | --- | e17 | 300 | --- | 101 | --- | 53 | --- | 0.21 | 0.00 | --- |
| TOTAL | 2584.41 | 760 | 2548 | 622.2 | 1444 | 2529 | 3895 | 7047 | 775.9 | 54.82 | 1.33 | 0.00 |
| MEAN | 83.37 | 25.33 | 82.19 | 20.07 | 51.57 | 81.58 | 129.8 | 227.3 | 25.86 | 1.768 | 0.043 | 0.000 |
| MAX | 486 | 174 | 596 | 300 | 448 | 255 | 1000 | 1400 | 135 | 6.5 | 0.20 | 0.00 |
| MIN | 0.08 | 13 | 17 | 8.0 | 14 | 14 | 20 | 20 | 7.5 | 0.21 | 0.00 | 0.00 |
| CFSM | 2.41 | 0.73 | 2.38 | 0.58 | 1.49 | 2.36 | 3.75 | 6.57 | 0.75 | 0.05 | 0.00 | 0.00 |
| IN. | 2.78 | 0.82 | 2.74 | 0.67 | 1.55 | 2.72 | 4.19 | 7.58 | 0.83 | 0.06 | 0.00 | 0.00 |
| e Estimated |
| STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1980 - 2002, BY WATER YEAR (WY) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MEAN | 14.43 | 33.83 | 38.43 | 36.88 | 48.35 | 46.98 | 54.46 | 54.60 | 36.94 | 11.64 | 3.257 | 6.038 |
| MAX | 88.0 | 235 | 131 | 122 | 124 | 117 | 146 | 227 | 102 | 39.8 | 14.1 | 54.2 |
| (WY) | 2001 | 1993 | 1983 | 1993 | 1982 | 1998 | 1994 | 2002 | 1998 | 2000 | 1981 | 1993 |
| MIN | 0.000 | 0.000 | 0.13 | 0.19 | 1.98 | 4.00 | 4.29 | 8.19 | 1.27 | 0.031 | 0.000 | 0.000 |
| (WY) | 1989 | 2000 | 2000 | 1981 | 2000 | 2000 | 2000 | 2000 | 1991 | 1991 | 1984 | 1983 |
| SUMMARY STATISTICS | FOR 2001 CALENDAR YEAR | FOR 2002 WATER YEAR | WATER YEARS 1980 - 2002 | |||
|---|---|---|---|---|---|---|
| ANNUAL TOTAL | 13579.09 | 22261.66 | ||||
| ANNUAL MEAN | 37.20 | 60.99 | 32.20 | |||
| HIGHEST ANNUAL MEAN | 61.0 | 2002 | ||||
| LOWEST ANNUAL MEAN | 12.4 | 1992 | ||||
| HIGHEST DAILY MEAN | 719 | Jun 6 | 1400 | May 7 | 1680 | May 16 1990 |
| LOWEST DAILY MEAN | 0.08 | Oct 4 | 0.00 | Many days | 0.00 | A |
| ANNUAL SEVEN-DAY MINIMUM | 0.13 | Sep 28 | 0.00 | Aug 10 | 0.00 | Aug 11 1983 |
| MAXIMUM PEAK FLOW | 3260 | May 12 | 3260 B | May 12 2002 | ||
| MAXIMUM PEAK STAGE | 13.38 | May 12 | 13.38 | May 12 2002 | ||
| ANNUAL RUNOFF (CFSM) | 1.08 | 1.76 | 0.93 | |||
| ANNUAL RUNOFF (INCHES) | 14.60 | 23.93 | 12.65 | |||
| 10 PERCENT EXCEEDS | 85 | 152 | 72 | |||
| 50 PERCENT EXCEEDS | 17 | 19 | 11 | |||
| 90 PERCENT EXCEEDS | 0.37 | 0.00 | 0.00 | |||