LOCATION.-- Lat 42°04'55", long 87°53'25" (NAD of 1927), in SE1/4SE1/4 sec.25, T.42 N., R.11 E., Cook County, Hydrologic Unit 07120004, on right bank 50 ft upstream from Dam No. 2 of Cook County Forest Preserve, 0.3 mi downstream from Lake Avenue Bridge, 1.2 mi upstream from Central Road Bridge, 2.5 mi north of Des Plaines, and at mile 69.3. |
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DRAINAGE AREA.-- 360 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1940 to current year. |
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STAGE: Water years 1994-2002. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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REVISED RECORDS.-- WSP 975: 1942. WDR IL-75-1: Drainage area. |
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GAGE.-- Water-stage recorder, phone telemeter, and masonry dam. Datum of gage is 626.31 ft above NGVD of 1929. Prior to Apr. 8, 1941, 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, 4,900 ft3/s, Oct. 1, 1986, gage height, 10.88 ft; no flow many days in 1944, 1946 and Aug. 7, 8, 1962. |
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EXTREMES OUTSIDE PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Flood of July 4, 1938, reached a stage of 9.0 ft, from floodmark, discharge, 5,000 ft3/s. |
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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 |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 202 | 843 | 419 | e128 | 195 | 381 | 280 | 420 | 159 | 102 | 77 | 83 |
2 | 177 | 795 | 395 | e120 | 212 | 365 | 296 | 716 | 140 | 95 | 72 | 246 |
3 | 161 | 743 | 376 | e120 | 213 | 371 | 300 | 542 | 174 | 83 | 72 | 330 |
4 | 160 | 677 | 361 | 130 | 198 | 318 | 286 | 438 | 1240 | 75 | 82 | 245 |
5 | 267 | 602 | 351 | 128 | 165 | 315 | 280 | 383 | 1820 | 67 | 106 | 216 |
6 | 216 | 513 | 337 | 129 | 173 | 319 | 269 | 354 | 1590 | 74 | 75 | 180 |
7 | 172 | 407 | 312 | 129 | 174 | 332 | 283 | 336 | 1160 | 74 | 64 | 137 |
8 | 151 | 333 | 287 | 127 | 173 | 558 | 449 | 317 | 812 | 66 | 59 | 105 |
9 | 139 | 296 | 264 | 129 | 196 | 879 | 933 | 362 | 735 | 117 | 57 | 91 |
10 | 134 | 276 | 252 | 133 | 300 | 870 | 968 | 338 | 699 | 101 | 56 | 80 |
11 | 157 | 261 | 238 | 133 | 357 | 789 | 896 | 442 | 738 | 84 | 57 | 64 |
12 | 301 | 244 | 232 | 136 | 361 | 750 | 863 | 1430 | 703 | 87 | 58 | 59 |
13 | 995 | 228 | 361 | 137 | 372 | 726 | 840 | 1100 | 642 | 80 | 239 | 55 |
14 | 2890 | 218 | 366 | 140 | 355 | 705 | 828 | 790 | 607 | 72 | 403 | 51 |
15 | 2470 | 227 | 347 | 145 | 335 | 679 | 818 | 664 | 576 | 69 | 189 | 52 |
16 | 1950 | 262 | 337 | 148 | 309 | 641 | 795 | 713 | 497 | 67 | 120 | 49 |
17 | 1480 | 294 | 337 | 150 | 285 | 606 | 765 | 781 | 410 | 66 | 93 | 47 |
18 | 951 | 316 | 329 | 142 | 266 | 569 | 714 | 640 | 323 | 70 | 72 | 57 |
19 | 783 | 317 | 338 | 140 | 297 | 519 | 651 | 523 | 264 | 68 | 86 | 126 |
20 | 721 | 298 | 333 | 139 | 472 | 459 | 607 | 436 | 230 | 66 | 75 | 193 |
21 | 657 | 271 | 311 | 134 | 569 | 390 | 621 | 370 | 220 | 63 | 92 | 161 |
22 | 605 | 249 | 289 | 117 | 581 | 336 | 613 | 322 | 203 | 68 | 1860 | 208 |
23 | 1690 | 231 | 294 | 121 | 557 | 304 | 565 | 286 | 180 | 75 | 1890 | 152 |
24 | 2140 | 245 | 278 | 126 | 541 | 275 | 512 | 260 | 162 | 72 | 873 | 108 |
25 | 2180 | 280 | 246 | 129 | 522 | 249 | 475 | 255 | 148 | 70 | 473 | 86 |
26 | 1960 | 262 | 213 | 127 | 498 | 233 | 438 | 256 | 134 | 74 | 287 | 74 |
27 | 1690 | 246 | e180 | 131 | 476 | 220 | 432 | 229 | 144 | 87 | 206 | 66 |
28 | 1400 | 232 | e165 | 139 | 437 | 221 | 472 | 212 | 125 | 88 | 155 | 57 |
29 | 1140 | 252 | e150 | 145 | --- | 273 | 437 | 201 | 115 | 103 | 120 | 115 |
30 | 987 | 361 | e140 | 144 | --- | 344 | 406 | 194 | 107 | 92 | 105 | 149 |
31 | 905 | --- | e133 | 164 | --- | 300 | --- | 179 | --- | 81 | 91 | --- |
TOTAL | 29831 | 10779 | 8971 | 4160 | 9589 | 14296 | 17092 | 14489 | 15057 | 2456 | 8264 | 3642 |
MEAN | 962.3 | 359.3 | 289.4 | 134.2 | 342.5 | 461.2 | 569.7 | 467.4 | 501.9 | 79.23 | 266.6 | 121.4 |
MAX | 2890 | 843 | 419 | 164 | 581 | 879 | 968 | 1430 | 1820 | 117 | 1890 | 330 |
MIN | 134 | 218 | 133 | 117 | 165 | 220 | 269 | 179 | 107 | 63 | 56 | 47 |
CFSM | 2.67 | 1.00 | 0.80 | 0.37 | 0.95 | 1.28 | 1.58 | 1.30 | 1.39 | 0.22 | 0.74 | 0.34 |
IN. | 3.08 | 1.11 | 0.93 | 0.43 | 0.99 | 1.48 | 1.77 | 1.50 | 1.56 | 0.25 | 0.85 | 0.38 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 2002, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 158.8 | 215.3 | 229.7 | 237.2 | 324.5 | 625.2 | 637.9 | 416.5 | 301.6 | 174.2 | 133.0 | 136.9 |
MAX | 1453 | 1187 | 1368 | 1046 | 1070 | 2216 | 1990 | 1557 | 1299 | 908 | 726 | 1191 |
(WY) | 1987 | 1986 | 1983 | 1960 | 1974 | 1979 | 1993 | 1996 | 2000 | 1993 | 1972 | 1972 |
MIN | 0.96 | 3.02 | 2.73 | 2.92 | 5.01 | 40.7 | 57.7 | 41.5 | 15.3 | 6.35 | 0.81 | 0.30 |
(WY) | 1945 | 1954 | 1945 | 1945 | 1963 | 1945 | 1945 | 1946 | 1963 | 1946 | 1944 | 1944 |
SUMMARY STATISTICS | FOR 2001 CALENDAR YEAR | FOR 2002 WATER YEAR | WATER YEARS 1941 - 2002 | |||
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ANNUAL TOTAL | 180359 | 138626 | ||||
ANNUAL MEAN | 494.1 | 379.8 | 298.8 | |||
HIGHEST ANNUAL MEAN | 656 | 1993 | ||||
LOWEST ANNUAL MEAN | 31.4 | 1963 | ||||
HIGHEST DAILY MEAN | 2890 | Oct 14 | 2890 | Oct 14 | 4870 | Oct 1 1986 |
LOWEST DAILY MEAN | 53 | Aug 8 | 47 | Sep 17 | 0.00 | A |
ANNUAL SEVEN-DAY MINIMUM | 90 | Aug 3 | 53 | Sep 12 | 0.00 | Aug 10 1944 |
MAXIMUM PEAK FLOW | 2970 | Oct 14 | 4900 | Oct 1 1986 | ||
MAXIMUM PEAK STAGE | 7.38 | Oct 14 | 10.88 | Oct 1 1986 | ||
INSTANTANEOUS LOW FLOW | 45 | Sep 17 | ||||
ANNUAL RUNOFF (CFSM) | 1.37 | 1.05 | 0.83 | |||
ANNUAL RUNOFF (INCHES) | 18.64 | 14.32 | 11.28 | |||
10 PERCENT EXCEEDS | 929 | 795 | 780 | |||
50 PERCENT EXCEEDS | 361 | 262 | 138 | |||
90 PERCENT EXCEEDS | 148 | 75 | 12 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |