LOCATION.-- Lat 41°36'25", long 87°35'52" (NAD of 1927), in NE1/4SE1/4 sec.15, T.36 N., R.14 E., Cook County, Hydrologic Unit 07120003, on left bank at downstream side of bridge on Cottage Grove Avenue in South Holland, 2.0 mi downstream from Thorn Creek, and at mile 23.0. |
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DRAINAGE AREA.-- 208 mi2. (Does not include part of watershed diverted to Lake Michigan.) |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1947 to current year. Prior to October 1974, records published with those for streams in the St. Lawrence River basin (WSP 1307, 1727, 1911, 2111, WDR IL 1971-74). |
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STAGE: Water years 1994-2002. |
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PRECIPITATION: October 2000 to current year. |
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REVISED RECORDS.-- WSP 1507: 1950, 1953. WDR IL-81-2: Drainage area. |
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GAGE.-- Water-stage recorder, phone telemeter, rain gage, and crest-stage gage. Datum of gage is 575.00 ft above NGVD of 1929 (Illinois Department of Transportation bench mark). Prior to Oct. 27, 1947, nonrecording gage and Oct. 27, 1947, to Mar. 31, 1981,water-stage recorder at site 1.4 mi upstream at same datum. Apr. 14 to Nov. 8, 1981, nonrecording gage at same site and datum. Nov. 17, 1947, to Nov. 19, 1970, auxiliary water-stage recorder at Dixmoor, 4.7 mi downstream; prior to Nov. 17, 1947, nonrecording gage at the Dixmoor site read twice daily. |
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REMARKS.-- Flow from upper Little Calumet River is diverted to Lake Michigan by Burns ditch. Calumet Sag Channel, 6.6 mi downstream from station diverts the entire flow to the Mississippi River Basin. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 4,440 ft3/s, July 14, 1957, gage height, 20.11 ft, site then in use; maximum gage height, 20.50 ft, Nov. 28, 1990; minimum daily discharge, 7.9 ft3/s Oct. 6, 1950. |
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PRECIPITATION: Maximum daily total, 2.32 in., May 11, 2002. |
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EXTREMES OUTSIDE PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Flood of Apr. 6, 1947, reached a stage of 19.24 ft, from floodmarks, discharge, 4,760 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 | 63 | 131 | 405 | e76 | 425 | 136 | 134 | 202 | 91 | 51 | 38 | 24 |
2 | 56 | 299 | 280 | e79 | 420 | 167 | 404 | 184 | 86 | 45 | 38 | 72 |
3 | 50 | 414 | 206 | e82 | 307 | 289 | 562 | 155 | 86 | 41 | 36 | 85 |
4 | 84 | 308 | 167 | e83 | 235 | 242 | 342 | 133 | 101 | 49 | 37 | 39 |
5 | 644 | 227 | 150 | 85 | 173 | 220 | 237 | 120 | 103 | 150 | 79 | 29 |
6 | 419 | 172 | 156 | 84 | 161 | 219 | 188 | 163 | 93 | 70 | 47 | 28 |
7 | 229 | 147 | 135 | 83 | 145 | 379 | 182 | 175 | 83 | 52 | 35 | 29 |
8 | 147 | 133 | 123 | 80 | 141 | 889 | 453 | 257 | 80 | 45 | 33 | 29 |
9 | 111 | 119 | 117 | 80 | 169 | 1410 | 1570 | 954 | 75 | 143 | 31 | 28 |
10 | 89 | 113 | 108 | 83 | 336 | 1270 | 1270 | 1100 | 72 | 151 | 33 | 29 |
11 | 82 | 110 | 105 | 80 | 380 | 596 | 547 | 852 | 117 | 94 | 31 | 33 |
12 | 515 | 107 | 115 | 80 | 281 | 389 | 365 | 2690 | 109 | 64 | 30 | 27 |
13 | 654 | 103 | 118 | 79 | 224 | 319 | 278 | 3130 | 73 | 51 | 31 | 23 |
14 | 1490 | 117 | 133 | 81 | 186 | 264 | 221 | 2160 | 184 | 48 | 37 | 22 |
15 | 1160 | 119 | 153 | 87 | 161 | 221 | 184 | 1100 | 190 | 41 | 29 | 26 |
16 | 617 | 103 | 141 | 99 | 151 | 179 | 163 | 748 | 101 | 38 | 40 | 25 |
17 | 410 | 96 | 209 | e90 | 139 | 156 | 160 | 753 | 73 | 38 | 67 | 25 |
18 | 309 | 96 | 229 | e79 | 124 | 145 | 143 | 481 | 64 | 37 | 38 | 43 |
19 | 241 | 109 | 194 | e78 | 160 | 135 | 133 | 330 | 64 | 47 | 67 | 50 |
20 | 205 | 106 | 171 | 78 | 460 | 136 | 405 | 263 | 82 | 41 | 72 | 154 |
21 | 164 | 99 | 138 | 78 | 521 | 134 | 360 | 222 | 60 | 38 | 45 | 102 |
22 | 139 | 99 | 123 | 78 | 341 | 126 | 333 | 218 | 47 | 36 | 76 | 54 |
23 | 475 | 93 | 132 | 81 | 242 | 117 | 247 | 191 | 50 | 36 | 51 | 42 |
24 | 551 | 113 | 123 | 87 | 194 | 115 | 210 | 540 | 48 | 40 | 50 | 35 |
25 | 629 | 151 | 111 | 89 | 170 | 112 | 272 | 409 | 61 | 61 | 41 | 33 |
26 | 412 | 133 | 108 | 84 | 184 | 116 | 208 | 248 | 111 | 43 | 36 | 29 |
27 | 288 | 125 | 104 | 87 | 176 | 114 | 241 | 172 | 226 | 55 | 33 | 29 |
28 | 227 | 113 | 99 | 87 | 147 | 119 | 616 | 145 | 120 | 61 | 29 | 53 |
29 | 200 | 121 | 91 | 88 | --- | 154 | 441 | 128 | 73 | 57 | 27 | 61 |
30 | 152 | 408 | e80 | 108 | --- | 186 | 272 | 122 | 57 | 69 | 24 | 38 |
31 | 133 | --- | e76 | 188 | --- | 156 | --- | 113 | --- | 46 | 24 | --- |
TOTAL | 10945 | 4584 | 4600 | 2701 | 6753 | 9210 | 11141 | 18458 | 2780 | 1838 | 1285 | 1296 |
MEAN | 353.1 | 152.8 | 148.4 | 87.13 | 241.2 | 297.1 | 371.4 | 595.4 | 92.67 | 59.29 | 41.45 | 43.20 |
MAX | 1490 | 414 | 405 | 188 | 521 | 1410 | 1570 | 3130 | 226 | 151 | 79 | 154 |
MIN | 50 | 93 | 76 | 76 | 124 | 112 | 133 | 113 | 47 | 36 | 24 | 22 |
CFSM | 1.70 | 0.73 | 0.71 | 0.42 | 1.16 | 1.43 | 1.79 | 2.86 | 0.45 | 0.29 | 0.20 | 0.21 |
IN. | 1.96 | 0.82 | 0.82 | 0.48 | 1.21 | 1.65 | 1.99 | 3.30 | 0.50 | 0.33 | 0.23 | 0.23 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2002, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 104.6 | 147.4 | 172.1 | 175.9 | 224.3 | 318.9 | 320.0 | 251.9 | 203.7 | 128.2 | 102.5 | 103.3 |
MAX | 645 | 572 | 767 | 572 | 667 | 916 | 712 | 638 | 817 | 555 | 360 | 480 |
(WY) | 1955 | 1991 | 1983 | 1993 | 1997 | 1979 | 1950 | 1996 | 1993 | 1957 | 1968 | 1961 |
MIN | 19.8 | 18.1 | 27.8 | 27.0 | 38.1 | 65.4 | 65.1 | 51.8 | 35.4 | 39.0 | 23.8 | 17.8 |
(WY) | 1957 | 1950 | 1963 | 1963 | 1964 | 2000 | 1986 | 1958 | 1949 | 1948 | 1948 | 1949 |
SUMMARY STATISTICS | FOR 2001 CALENDAR YEAR | FOR 2002 WATER YEAR | WATER YEARS 1948 - 2002 | |||
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ANNUAL TOTAL | 69180 | 75591 | ||||
ANNUAL MEAN | 189.5 | 207.1 | 187.4 | |||
HIGHEST ANNUAL MEAN | 333 | 1993 | ||||
LOWEST ANNUAL MEAN | 72.4 | 1964 | ||||
HIGHEST DAILY MEAN | 2310 | Feb 10 | 3130 | May 13 | 4240 | Jul 14 1957 |
LOWEST DAILY MEAN | 36 | Jul 20 | 22 | Sep 14 | 7.9 | Oct 6 1950 |
ANNUAL SEVEN-DAY MINIMUM | 39 | Jul 14 | 26 | Sep 11 | 14 | Oct 27 1949 |
MAXIMUM PEAK FLOW | 3260 | May 13 | 4440 A | Jul 14 1957 | ||
MAXIMUM PEAK STAGE | 18.37 | May 13 | 20.50 | Nov 28 1990 | ||
INSTANTANEOUS LOW FLOW | 21 | Sep 14 | ||||
ANNUAL RUNOFF (CFSM) | 0.91 | 1.00 | 0.90 | |||
ANNUAL RUNOFF (INCHES) | 12.37 | 13.52 | 12.24 | |||
10 PERCENT EXCEEDS | 405 | 416 | 423 | |||
50 PERCENT EXCEEDS | 116 | 117 | 85 | |||
90 PERCENT EXCEEDS | 59 | 37 | 36 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |