LOCATION.-- Lat 41°30'54", long 88°04'24" (NAD of 1927), in NE1/4SW1/4 sec.15, T.35 N., R.10 E., Will County, Hydrologic Unit 07120004, on left bank at downstream side of Richards Street bridge in Joliet, 0.6 mi downstream from Spring Creek, and at mile 1.6. |
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DRAINAGE AREA.-- 107.48 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1944 to current year. |
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STAGE: Water years 1994 to current year. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1979-91. |
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REVISED RECORDS.-- WDR IL-91-2: 1981(M). |
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GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 506.00 ft above NGVD of 1929. Prior to Oct. 9, 1946, nonrecording gage at site 0.3 mi upstream at datum 21.00 ft higher. Oct. 9, 1946, to Sept. 30, 1974, at site 0.3 miles upstream at datum 21.00 ft higher. Oct. 1, 1974 to Sept. 30, 2003, at site 0.3 miles upstream at datum 20.00 ft higher. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 17,300 ft3/s, June 13, 1981, gage height, 14.90 ft, from rating curve extended above 6,300 ft3/s, site and datum then in use; maximum gage height, 16.82 ft, June 12, 2004, present site and datum (discharge 4,630 ft3/s); minimum, 0.5 ft3/s, Aug. 9, 16, 19, 1964. |
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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 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 21 | 19 | 81 | e49 | e23 | 67 | 196 | 133 | 812 | 28 | 24 | 113 |
2 | 18 | 252 | 70 | e47 | e23 | 90 | 146 | 112 | 466 | 26 | 23 | 76 |
3 | 17 | 225 | 65 | e45 | e24 | 74 | 117 | 73 | 345 | 32 | 32 | 54 |
4 | 17 | 164 | 66 | e47 | e25 | 99 | 99 | 57 | 211 | 200 | 160 | 45 |
5 | 18 | 510 | 114 | e49 | e24 | 1370 | 83 | 50 | 156 | 120 | 127 | 38 |
6 | 17 | 277 | 205 | e45 | e23 | 718 | 75 | 44 | 115 | 69 | 56 | 34 |
7 | 17 | 147 | 143 | e40 | e23 | 392 | 67 | 46 | 89 | 47 | 35 | 31 |
8 | 20 | 105 | 117 | e35 | e22 | 235 | 62 | 47 | 73 | 35 | 28 | 29 |
9 | 16 | 80 | 113 | e31 | e22 | 172 | 56 | 48 | 65 | 42 | 25 | 26 |
10 | 15 | 70 | 443 | e32 | e22 | 136 | 52 | 51 | 107 | 72 | 23 | 25 |
11 | 14 | 63 | 378 | e33 | e23 | 107 | 48 | 47 | 659 | 45 | 21 | 25 |
12 | 14 | 60 | 199 | e33 | e23 | 81 | 44 | 48 | 3470 | 34 | 21 | 23 |
13 | 13 | 58 | 132 | e32 | e23 | 69 | 43 | 425 | 1350 | 30 | 21 | 22 |
14 | 45 | 51 | 112 | e31 | e22 | 73 | 39 | 1140 | 790 | 28 | 20 | 22 |
15 | 78 | 48 | 97 | e31 | e22 | 70 | 38 | 847 | 489 | 28 | 19 | 25 |
16 | 45 | 47 | 92 | e30 | e21 | 64 | 37 | 439 | 307 | 26 | 19 | 124 |
17 | 33 | 50 | 86 | e29 | e21 | 62 | 38 | 265 | 214 | 24 | 19 | 80 |
18 | 26 | 1040 | 73 | e28 | e22 | 67 | 38 | 283 | 173 | 24 | 22 | 37 |
19 | 23 | 1720 | 68 | e27 | e25 | 77 | 35 | 210 | 145 | 22 | 30 | 28 |
20 | 19 | 769 | 59 | e27 | e50 | 71 | 43 | 157 | 115 | 22 | 30 | 24 |
21 | 17 | 409 | 56 | e26 | e200 | 62 | 103 | 128 | 94 | 22 | 28 | 22 |
22 | 17 | 257 | 46 | e25 | 172 | 55 | 67 | 164 | 96 | 22 | 23 | 20 |
23 | 16 | 309 | 44 | e25 | 187 | 52 | 50 | 895 | 70 | 33 | 21 | 19 |
24 | 17 | 762 | 43 | e25 | 180 | 74 | 45 | 423 | 54 | 32 | 40 | 19 |
25 | 38 | 375 | 40 | e25 | 128 | 112 | 156 | 364 | 49 | 27 | 47 | 18 |
26 | 44 | 237 | 38 | e25 | 96 | 130 | 128 | 246 | 42 | 24 | 147 | 18 |
27 | 27 | 188 | 36 | e24 | 73 | 149 | 81 | 161 | 37 | 23 | 298 | 18 |
28 | 23 | 159 | 46 | e23 | 61 | 187 | 60 | 118 | 35 | 22 | 1250 | 17 |
29 | 20 | 130 | 61 | e23 | 57 | 698 | 50 | 91 | 33 | 23 | 598 | 17 |
30 | 20 | 98 | e65 | e22 | --- | 379 | 64 | 659 | 30 | 26 | 273 | 17 |
31 | 21 | --- | e52 | e22 | --- | 280 | --- | 1490 | --- | 25 | 155 | --- |
TOTAL | 746 | 8679 | 3240 | 986 | 1637 | 6272 | 2160 | 9261 | 10691 | 1233 | 3635 | 1066 |
MEAN | 24.1 | 289 | 105 | 31.8 | 56.4 | 202 | 72.0 | 299 | 356 | 39.8 | 117 | 35.5 |
MAX | 78 | 1720 | 443 | 49 | 200 | 1370 | 196 | 1490 | 3470 | 200 | 1250 | 124 |
MIN | 13 | 19 | 36 | 22 | 21 | 52 | 35 | 44 | 30 | 22 | 19 | 17 |
CFSM | 0.22 | 2.69 | 0.97 | 0.30 | 0.53 | 1.88 | 0.67 | 2.78 | 3.32 | 0.37 | 1.09 | 0.33 |
IN. | 0.26 | 3.00 | 1.12 | 0.34 | 0.57 | 2.17 | 0.75 | 3.21 | 3.70 | 0.43 | 1.26 | 0.37 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 2004, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 39.6 | 65.4 | 78.0 | 81.3 | 109 | 167 | 172 | 135 | 108 | 59.7 | 36.9 | 39.7 |
MAX | 458 | 359 | 552 | 306 | 416 | 726 | 566 | 488 | 581 | 432 | 144 | 372 |
(WY) | 1955 | 1991 | 1983 | 1974 | 1997 | 1979 | 1947 | 1974 | 1981 | 1957 | 1998 | 1961 |
MIN | 3.05 | 5.34 | 3.15 | 3.89 | 5.54 | 18.9 | 13.8 | 20.1 | 10.9 | 7.17 | 3.36 | 4.35 |
(WY) | 1964 | 1964 | 1964 | 1963 | 1963 | 1964 | 1963 | 1985 | 1988 | 1988 | 1964 | 1966 |
SUMMARY STATISTICS | FOR 2003 CALENDAR YEAR | FOR 2004 WATER YEAR | WATER YEARS 1945 - 2004 | |||
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ANNUAL TOTAL | 35016 | 49606 | ||||
ANNUAL MEAN | 95.9 | 136 | 90.8 | |||
HIGHEST ANNUAL MEAN | 168 | 1993 | ||||
LOWEST ANNUAL MEAN | 20.8 | 1963 | ||||
HIGHEST DAILY MEAN | 1720 | Nov 19 | 3470 | Jun 12 | 8400 B | Jun 13 1981 |
LOWEST DAILY MEAN | 11 | A | 13 | Oct 13 | 0.80 B | Aug 16 1964 |
ANNUAL SEVEN-DAY MINIMUM | 13 | Feb 11 | 16 | Oct 7 | 1.0 B | Aug 12 1964 |
MAXIMUM PEAK FLOW | 4630 | Jun 12 | 17300 C | Jun 13 1981 | ||
MAXIMUM PEAK STAGE | 16.82 | Jun 12 | 16.82 D | Jun 12 2004 | ||
INSTANTANEOUS LOW FLOW | 11 | Oct 12 | 0.50 | E | ||
ANNUAL RUNOFF (CFSM) | 0.893 | 1.26 | 0.845 | |||
ANNUAL RUNOFF (INCHES) | 12.12 | 17.17 | 11.48 | |||
10 PERCENT EXCEEDS | 212 | 288 | 199 | |||
50 PERCENT EXCEEDS | 36 | 48 | 30 | |||
90 PERCENT EXCEEDS | 15 | 21 | 7.8 |
C - From rating curve extended above 6,300 ft3/s, gage height, 14.90 ft, site and datum then in use. |
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Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |