LOCATION.-- Lat 41°17'10", long 88°21'35" (NAD of 1927), in SW1/4SW1/4 sec.31, T.33 N., R.8 E., Grundy County, Hydrologic Unit 07120005, on right bank at downstream side of bridge on State Highway 113, 0.3 mi downstream from Johnny Run, 3 mi west of Coal City, and at mile 15.0. |
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DRAINAGE AREA.-- 455 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1939 to October 1995. October 1998 to current year. |
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STAGE: Water years 1994-1996;1999 to current year. |
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PARTIAL RECORD: Annual maximum, water years 1997-98. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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DISSOLVED OXYGEN: Water years 2001-2003. |
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SPECIFIC CONDUCTANCE: Water years 2001-2003. |
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TURBIDITY: Water years 2001-2003. |
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WATER TEMPERATURE: Water years 2001-2003. |
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REVISED RECORDS.-- WSP 1035: 1943(P). WSP 1115: 1946. WDR IL-75-1: 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 527.41 ft. above NGVD of 1929 (527.15 ft NAVD 1988). Prior to Apr. 30, 1940, and October 1996 to September 1998, nonrecording gage at same site and datum. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 22,400 ft3/s, Dec. 4, 1982, gage height, 19.51 ft; maximum gage height, 19.70 ft, July 15, 1958, discharge, 17,600 ft3/s, from rating extended above 12,000 ft3/s; no flow at times in many years. |
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EXTREMES OUTSIDE PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Flood of Aug. 8, 1924 reached a stage of about 21 ft, discharge not determined. |
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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 2004 TO SEPTEMBER 2005 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 5.5 | 115 | 1880 | 133 | 118 | 369 | 549 | 189 | 70 | 7.4 | 11 | 1.6 |
2 | 6.9 | 1080 | 1730 | 240 | 110 | 299 | 441 | 169 | 66 | 6.2 | 8.0 | 1.3 |
3 | 6.3 | 1090 | 1280 | 1520 | 109 | 259 | 395 | 154 | 67 | 5.7 | 6.9 | 1.0 |
4 | 7.2 | 1320 | 1010 | 4560 | 121 | 249 | 345 | 142 | 75 | 5.9 | 5.5 | 0.91 |
5 | 6.3 | 1940 | 783 | 3170 | 154 | 245 | 301 | 131 | 74 | 5.3 | 4.1 | 0.90 |
6 | 6.4 | 1250 | 854 | 2360 | 206 | 230 | 274 | 126 | 62 | 4.2 | 3.4 | 0.74 |
7 | 6.3 | 851 | 2400 | 1360 | 322 | 247 | 250 | 127 | 51 | 3.5 | 2.8 | 0.54 |
8 | 7.1 | 587 | 4810 | 902 | 813 | 232 | 229 | 122 | 45 | 2.6 | 2.1 | 0.39 |
9 | 8.5 | 447 | 2440 | 654 | 735 | 190 | 210 | 119 | 66 | 2.1 | 1.8 | 0.31 |
10 | 8.3 | 375 | 1560 | 558 | 490 | 182 | 201 | 117 | 114 | 1.6 | 1.4 | 0.28 |
11 | 9.2 | 314 | 1120 | 1180 | 358 | 191 | 192 | 111 | 102 | 1.5 | 2.3 | 0.21 |
12 | 9.6 | 252 | 876 | 3590 | 313 | 182 | 196 | 101 | 77 | 3.3 | 2.9 | 0.41 |
13 | 9.4 | 207 | 686 | 10500 | 330 | 156 | 215 | 93 | 65 | 2.5 | 6.0 | 0.41 |
14 | 13 | 173 | 500 | 11200 | 2200 | 145 | 238 | 98 | 59 | 1.6 | 41 | 0.56 |
15 | 95 | 158 | 420 | 3160 | 2330 | 131 | 228 | 95 | 54 | 1.8 | 192 | 0.44 |
16 | 182 | 152 | 386 | 1390 | 1570 | 126 | 205 | 86 | 46 | 1.9 | 200 | 0.83 |
17 | 143 | 149 | 337 | 901 | 1110 | 131 | 195 | 79 | 38 | 1.6 | 95 | 0.72 |
18 | 98 | 144 | 310 | 785 | 725 | 135 | 194 | 76 | 31 | 1.1 | 52 | 0.63 |
19 | 74 | 244 | 266 | 641 | 515 | 136 | 191 | 102 | 27 | 0.65 | 32 | 0.94 |
20 | 63 | 512 | e230 | 372 | 435 | 130 | 193 | 140 | 24 | 1.9 | 27 | 2.6 |
21 | 51 | 443 | e200 | 297 | 449 | 116 | 352 | 129 | 21 | 65 | 14 | 2.2 |
22 | 45 | 345 | e180 | 264 | 503 | 109 | 468 | 119 | 18 | 62 | 9.6 | 1.6 |
23 | 63 | 304 | e160 | e230 | 502 | 120 | 789 | 112 | 16 | 55 | 7.8 | 1.1 |
24 | 98 | 273 | e140 | e220 | 463 | 126 | 655 | 108 | 14 | 27 | 4.9 | 0.97 |
25 | 81 | 419 | e130 | e210 | 425 | 160 | 496 | 100 | 12 | 16 | 5.1 | 1.1 |
26 | 73 | 611 | e110 | e200 | 392 | 474 | 398 | 94 | 10 | 13 | 4.5 | 1.0 |
27 | 64 | 1510 | e105 | e210 | 356 | 522 | 321 | 91 | 9.6 | 43 | 3.5 | 1.1 |
28 | 55 | 2440 | e100 | e220 | 382 | 426 | 257 | 89 | 8.9 | 61 | 2.8 | 1.6 |
29 | 57 | 1570 | e105 | e180 | --- | 347 | 227 | 87 | 8.3 | 49 | 2.5 | 1.8 |
30 | 56 | 1290 | e110 | 158 | --- | 295 | 211 | 83 | 7.2 | 37 | 2.1 | 1.6 |
31 | 51 | --- | e120 | 146 | --- | 477 | --- | 76 | --- | 19 | 1.9 | --- |
TOTAL | 1459.0 | 20565 | 25338 | 51511 | 16536 | 7137 | 9416 | 3465 | 1338.0 | 509.35 | 755.9 | 29.79 |
MEAN | 47.1 | 686 | 817 | 1662 | 591 | 230 | 314 | 112 | 44.6 | 16.4 | 24.4 | 0.99 |
MAX | 182 | 2440 | 4810 | 11200 | 2330 | 522 | 789 | 189 | 114 | 65 | 200 | 2.6 |
MIN | 5.5 | 115 | 100 | 133 | 109 | 109 | 191 | 76 | 7.2 | 0.65 | 1.4 | 0.21 |
CFSM | 0.10 | 1.51 | 1.80 | 3.65 | 1.30 | 0.51 | 0.69 | 0.25 | 0.10 | 0.04 | 0.05 | 0.00 |
IN. | 0.12 | 1.68 | 2.07 | 4.21 | 1.35 | 0.58 | 0.77 | 0.28 | 0.11 | 0.04 | 0.06 | 0.00 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 2005, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 143 | 238 | 303 | 315 | 443 | 636 | 669 | 527 | 459 | 223 | 90.6 | 152 |
MAX | 1148 | 2264 | 2398 | 1662 | 2027 | 3378 | 2316 | 2765 | 1776 | 1551 | 1406 | 2494 |
(WY) | 1942 | 1986 | 1983 | 2005 | 2001 | 1979 | 1950 | 1943 | 1980 | 1958 | 1972 | 1989 |
MIN | 0.00 | 0.15 | 0.10 | 0.10 | 0.56 | 2.14 | 17.1 | 46.7 | 13.9 | 0.40 | 0.58 | 0.00 |
(WY) | 1940 | 1957 | 1940 | 1940 | 1940 | 1940 | 2003 | 1956 | 1988 | 1988 | 1947 | 1946 |
SUMMARY STATISTICS | FOR 2004 CALENDAR YEAR | FOR 2005 WATER YEAR | WATER YEARS 1940 - 2005 | |||
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ANNUAL TOTAL | 138416.7 | 138060.04 | ||||
ANNUAL MEAN | 378 | 378 | 349 | |||
HIGHEST ANNUAL MEAN | 819 | 1993 | ||||
LOWEST ANNUAL MEAN | 20.6 | 1940 | ||||
HIGHEST DAILY MEAN | 6590 | May 31 | 11200 | Jan 14 | 19400 | Dec 4 1982 |
LOWEST DAILY MEAN | 5.1 | Sep 30 | 0.21 | Sep 11 | 0.00 | A |
ANNUAL SEVEN-DAY MINIMUM | 6.0 | Sep 27 | 0.36 | Sep 7 | 0.00 | A |
MAXIMUM PEAK FLOW | 14300 | Jan 14 | 22400 B | Dec 4 1982 | ||
MAXIMUM PEAK STAGE | 15.22 | Jan 14 | 19.70 C | Jul 15 1958 | ||
INSTANTANEOUS LOW FLOW | 0.16 | D | ||||
ANNUAL RUNOFF (CFSM) | 0.831 | 0.831 | 0.767 | |||
ANNUAL RUNOFF (INCHES) | 11.32 | 11.29 | 10.42 | |||
10 PERCENT EXCEEDS | 1010 | 863 | 862 | |||
50 PERCENT EXCEEDS | 153 | 120 | 93 | |||
90 PERCENT EXCEEDS | 11 | 1.8 | 1.6 |
C - Discharge, 17,600 ft3/s, from rating extended above 12,000 ft3/s. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |