LOCATION.-- Lat 40°49'22", long 87°34'53" (NAD of 1927), in NE1/4SE1/4 sec.15, T.27 N., R.11 W., Iroquois County, Hydrologic Unit 07120002, on left bank at upstream side of bridge on U.S. Highway 52 in Iroquois, 500 ft upstream from a railroad bridge, 4.5 mi downstream from Indiana-Illinois State line, and at mile 50.4. |
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DRAINAGE AREA.-- 686 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 1978-91. Additional chemical data for water years 1972-77 are published in Water-Resources Investigations 78-23 and 79-24 as site FL 04. |
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SEDIMENT: October 1978 to September 1980, January 1993 to December 1995. |
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GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 614.34 ft above NGVD of 1929 (614.12 ft NAVD 1988). Prior to Aug. 5, 1945, 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, 10,400 ft3/s, June 13, 1958, gage height, 26.31 ft; minimum, 5.2 ft3/s, Sept. 13, 1964. |
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SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 2,280 mg/L, June 2, 1980; minimum daily, 3 mg/L, Dec. 23, 24, 27-31, 1978. |
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SUSPENDED-SEDIMENT LOADS: Maximum daily, 12,200 tons, June 3, 1980; minimum daily, 0.45 ton, Dec. 28, 1978. |
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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 | 158 | 477 | e2930 | 436 | 450 | 903 | 511 | 344 | 116 | 64 | 51 | 30 |
2 | 155 | 799 | e2980 | 503 | 419 | 821 | 497 | 317 | 114 | 64 | 44 | 29 |
3 | 153 | 1130 | e2900 | 767 | 401 | 747 | 474 | 293 | 119 | 66 | 40 | 29 |
4 | 149 | 1350 | e2770 | 1690 | 392 | 685 | 444 | 275 | 124 | 60 | 37 | 28 |
5 | 144 | 1570 | e2520 | 2310 | 425 | 647 | 415 | 256 | 133 | 61 | 35 | 27 |
6 | 141 | 1570 | e2320 | 3050 | 556 | 624 | 396 | 243 | 459 | 62 | 36 | 26 |
7 | 138 | 1490 | 2610 | 3260 | 747 | 625 | 379 | 243 | 639 | 59 | 39 | 26 |
8 | 138 | 1330 | 3110 | 3130 | 1130 | 613 | 362 | 240 | 562 | 59 | 39 | 26 |
9 | 140 | 1120 | 3140 | 2800 | 1390 | 572 | 347 | 230 | 432 | 51 | 37 | 27 |
10 | 140 | 912 | 2990 | 2440 | 1460 | 528 | 334 | 226 | 331 | 44 | 37 | 28 |
11 | 140 | 700 | 2720 | 2350 | 1440 | 505 | 322 | 219 | 266 | 42 | 35 | 29 |
12 | 138 | 570 | 2410 | 3250 | 1360 | 491 | 328 | 207 | 252 | 42 | 44 | 28 |
13 | 140 | 488 | 2050 | 5010 | 1310 | 470 | 438 | 196 | 229 | 43 | 55 | 27 |
14 | 144 | 422 | 1720 | 6160 | 1860 | 442 | 475 | 192 | 233 | 45 | 63 | 28 |
15 | 147 | 386 | 1420 | 5870 | 2390 | 418 | 429 | 187 | 286 | 48 | 87 | 30 |
16 | 147 | 373 | 1150 | 5420 | 2660 | 408 | 385 | 180 | 264 | 57 | 110 | 38 |
17 | 144 | 365 | 930 | 4860 | 2780 | 397 | 359 | 170 | 216 | 73 | 109 | 44 |
18 | 151 | 359 | 769 | 4300 | 2700 | 393 | 346 | 162 | 178 | 82 | 100 | 46 |
19 | 207 | 392 | 663 | 3790 | 2480 | 390 | 337 | 161 | 155 | 68 | 85 | 46 |
20 | 240 | 471 | 583 | 3250 | 2160 | 380 | 328 | 181 | 139 | 56 | 70 | 44 |
21 | 246 | e520 | 531 | 2720 | 1890 | 367 | 328 | 182 | 127 | 54 | 60 | 41 |
22 | 233 | 542 | 500 | 2220 | 1720 | 354 | 354 | 175 | 118 | 58 | 54 | 40 |
23 | 232 | 503 | e455 | 1770 | 1590 | 352 | 557 | 168 | 109 | 60 | 48 | 44 |
24 | 386 | 478 | e435 | 1460 | 1480 | 353 | 784 | 161 | 100 | 59 | 44 | 49 |
25 | 512 | 695 | e420 | 1070 | 1360 | 359 | 788 | 151 | 92 | 57 | 41 | 60 |
26 | 506 | e1170 | e410 | 871 | 1220 | 408 | 690 | 141 | 84 | 51 | 39 | 77 |
27 | 451 | e1630 | e400 | 730 | 1090 | 519 | 576 | 136 | 76 | 52 | 37 | 185 |
28 | 395 | e2170 | e385 | 602 | 993 | 568 | 479 | 133 | 71 | 66 | 35 | 296 |
29 | 387 | e2440 | e375 | 534 | --- | 555 | 412 | 129 | 66 | 92 | 33 | 263 |
30 | 435 | e2700 | e380 | 517 | --- | 516 | 371 | 125 | 65 | 82 | 31 | 262 |
31 | 461 | --- | e390 | 499 | --- | 509 | --- | 120 | --- | 63 | 31 | --- |
TOTAL | 7298 | 29122 | 47366 | 77639 | 39853 | 15919 | 13245 | 6143 | 6155 | 1840 | 1606 | 1953 |
MEAN | 235 | 971 | 1528 | 2504 | 1423 | 514 | 442 | 198 | 205 | 59.4 | 51.8 | 65.1 |
MAX | 512 | 2700 | 3140 | 6160 | 2780 | 903 | 788 | 344 | 639 | 92 | 110 | 296 |
MIN | 138 | 359 | 375 | 436 | 392 | 352 | 322 | 120 | 65 | 42 | 31 | 26 |
CFSM | 0.34 | 1.42 | 2.23 | 3.65 | 2.07 | 0.75 | 0.64 | 0.29 | 0.30 | 0.09 | 0.08 | 0.09 |
IN. | 0.40 | 1.58 | 2.57 | 4.21 | 2.16 | 0.86 | 0.72 | 0.33 | 0.33 | 0.10 | 0.09 | 0.11 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 2005, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 264 | 355 | 548 | 647 | 814 | 1050 | 1058 | 839 | 748 | 479 | 150 | 190 |
MAX | 2556 | 1878 | 1794 | 3030 | 2213 | 3462 | 3116 | 1956 | 3496 | 4336 | 608 | 2020 |
(WY) | 1994 | 1986 | 1968 | 1950 | 1950 | 1982 | 1950 | 2002 | 1958 | 2003 | 2004 | 1993 |
MIN | 10.6 | 18.0 | 16.9 | 20.6 | 27.7 | 94.8 | 249 | 141 | 53.7 | 23.4 | 11.4 | 11.7 |
(WY) | 1957 | 1957 | 1964 | 1945 | 1963 | 1957 | 1946 | 1958 | 1988 | 1988 | 1988 | 1964 |
SUMMARY STATISTICS | FOR 2004 CALENDAR YEAR | FOR 2005 WATER YEAR | WATER YEARS 1945 - 2005 | |||
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ANNUAL TOTAL | 284842 | 248139 | ||||
ANNUAL MEAN | 778 | 680 | 594 | |||
HIGHEST ANNUAL MEAN | 1323 | 1993 | ||||
LOWEST ANNUAL MEAN | 121 | 1964 | ||||
HIGHEST DAILY MEAN | 6510 | Jun 13 | 6160 | Jan 14 | 10200 | Jun 14 1958 |
LOWEST DAILY MEAN | 63 | Aug 3 | 26 A | 5.5 | Sep 13 1964 | |
ANNUAL SEVEN-DAY MINIMUM | 72 | Jul 28 | 27 | Sep 4 | 6.6 | Sep 8 1964 |
MAXIMUM PEAK FLOW | 6280 | Jan 14 | 10400 | Jun 13 1958 | ||
MAXIMUM PEAK STAGE | 23.54 | Jan 14 | 26.31 | Jun 13 1958 | ||
INSTANTANEOUS LOW FLOW | 26 B | 5.2 | Sep 13 1964 | |||
ANNUAL RUNOFF (CFSM) | 1.13 | 0.991 | 0.865 | |||
ANNUAL RUNOFF (INCHES) | 15.45 | 13.46 | 11.76 | |||
10 PERCENT EXCEEDS | 1960 | 2260 | 1610 | |||
50 PERCENT EXCEEDS | 400 | 354 | 270 | |||
90 PERCENT EXCEEDS | 143 | 43 | 34 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |