LOCATION.-- Lat 41°42'28", long 87°57'47" (NAD of 1927), in NE1/4SW1/4 sec.10, T.37 N., R.11 E., Du Page County, Hydrologic Unit 07120004, on concrete abutment on right bank, 50 ft upstream from bridge on Bluff Road at south edge of Argonne National Laboratory, 2.5 mi northeast of Lemont, and at mile 1. | |
DRAINAGE AREA.-- 13.0 mi2 | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: December 1985 to current year. | |
STAGE: Water years 1994-2002. | |
PARTIAL RECORD: Annual maximum, water years 1961-79. | |
PRECIPITATION: April 1986 to current year. | |
SURFACE-WATER QUALITY | |
MISCELLANEOUS: Water year 2000; contaminants in streambed sediments, water year 2000. | |
BIOLOGICAL | |
BENTHIC MACROINVERTEBRATES: Water year 2000. | |
FISH: Water year 2001. | |
HABITAT: Water year 2000. | |
REVISED RECORDS.-- WDR IL-77-1: 1961-76(M). | |
GAGE.-- Water-stage recorder, phone telemeter, unheated tipping-bucket rain gage, and crest-stage gage. Datum of gage is 630.00 ft above NGVD of 1929. Oct. 11, 1961, to Sept. 30, 1976, crest-stage gage on bridge 50 ft downstream at datum 11.22 ft higher. | |
REMARKS.-- For precipitation records, snowfall-affected data can result during cold weather when snow fills the rain-gage funnel and then melts as temperatures rise. Snowfall-affected data are subject to appreciable errors. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 3,070 ft3/s, July 18,1996, gage height, 17.53 ft; no flow at times in most years. | |
PRECIPITATION: Maximum daily total, 6.17 in., July 17, 1996. | |
REMARKS FOR CURRENT YEAR.-- Records fair except those for estimated daily discharges, which are poor. | |
| DISCHARGE, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
DAILY MEAN VALUES | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | 1.0 | 4.3 | 8.4 | 1.5 | 10 | 5.1 | 7.4 | 9.5 | e2.4 | 0.05 | 0.00 | 0.19 |
| 2 | 1.0 | 4.5 | 5.4 | 1.4 | 7.5 | 8.2 | 28 | 14 | e2.3 | 0.00 | 0.00 | 0.68 |
| 3 | 0.98 | 3.1 | 4.5 | 1.2 | 5.8 | 12 | 16 | 7.4 | 2.4 | 0.00 | 0.00 | 0.91 |
| 4 | 11 | 2.5 | 3.9 | 1.1 | 5.2 | 10 | 9.7 | 6.0 | 34 | 7.9 | 9.0 | 0.09 |
| 5 | 68 | 2.2 | 3.4 | 1.3 | 4.4 | 6.8 | 7.6 | 4.5 | 20 | 4.3 | 33 | 0.00 |
| 6 | 16 | 2.1 | 3.3 | 1.5 | 3.5 | 16 | 5.8 | 12 | 7.0 | 1.5 | 6.0 | 0.00 |
| 7 | 6.8 | 2.1 | 2.7 | 1.4 | 3.9 | 33 | 19 | 7.6 | 4.1 | 1.0 | 1.9 | 0.00 |
| 8 | 4.9 | 1.7 | 2.3 | 1.2 | 5.7 | 97 | 99 | 7.1 | 2.8 | 0.60 | 0.95 | 4.0 |
| 9 | 3.8 | 1.6 | 2.0 | 1.6 | 17 | 88 | 104 | 22 | 2.1 | 57 | 0.40 | 3.2 |
| 10 | e3.0 | 1.8 | 1.9 | 1.6 | 35 | 42 | 41 | 8.1 | 7.9 | 11 | 0.11 | 0.77 |
| 11 | e2.5 | 1.6 | 1.7 | 1.7 | 19 | 25 | 25 | 161 | 23 | 3.4 | 0.00 | 0.51 |
| 12 | e40 | 1.7 | 1.8 | 1.7 | 12 | 17 | 18 | 383 | 7.8 | 1.8 | 0.00 | 0.02 |
| 13 | e100 | 1.6 | 8.9 | 1.7 | 9.6 | 11 | 12 | 74 | 6.6 | 1.1 | 3.1 | 0.00 |
| 14 | e200 | 4.1 | 6.2 | e1.7 | 8.0 | 11 | 10 | 39 | 24 | 0.57 | 3.1 | 0.00 |
| 15 | e60 | 2.9 | 5.2 | e1.7 | 8.6 | 11 | 8.0 | 21 | 9.2 | 0.39 | 0.61 | 0.03 |
| 16 | e30 | 2.2 | 4.2 | e1.6 | 9.1 | 8.3 | 6.6 | 40 | 3.5 | 0.42 | 0.30 | 0.05 |
| 17 | 15 | 1.8 | 10 | e1.9 | 7.0 | 6.3 | 9.7 | 35 | 2.3 | 0.04 | 0.05 | 0.02 |
| 18 | 8.1 | 2.0 | 6.1 | e1.8 | 5.8 | 5.7 | 6.2 | 19 | 1.7 | 0.00 | 0.00 | 11 |
| 19 | 5.9 | 3.1 | 6.1 | e1.9 | 23 | 5.7 | 5.6 | 11 | 1.3 | 0.00 | 1.1 | 7.2 |
| 20 | 7.0 | 2.6 | 5.0 | e2.1 | 59 | 5.6 | 55 | 8.3 | 1.2 | 0.00 | 0.95 | 8.2 |
| 21 | 6.3 | 2.0 | 3.9 | 2.6 | 38 | 4.5 | 32 | 6.9 | 0.91 | 0.00 | 0.06 | 3.5 |
| 22 | 4.9 | 1.7 | 4.5 | 3.2 | 22 | 3.6 | 19 | 5.3 | 0.72 | 0.00 | 90 | 4.1 |
| 23 | 52 | 1.5 | 7.2 | 6.0 | 13 | 3.4 | 12 | 4.2 | 0.46 | 0.00 | 70 | 1.9 |
| 24 | 42 | 2.7 | 4.5 | 5.3 | 9.8 | 3.1 | 23 | 7.5 | 0.26 | 0.00 | 34 | 1.6 |
| 25 | 31 | 8.5 | 3.5 | 4.4 | 8.0 | 3.0 | 23 | 12 | 1.0 | 0.00 | 13 | 0.74 |
| 26 | 14 | 4.2 | 3.1 | 3.7 | 8.1 | 3.8 | 10 | 6.0 | 1.2 | 0.00 | 5.0 | 0.18 |
| 27 | 8.7 | 4.3 | 2.9 | 3.5 | 7.3 | 4.0 | 34 | 4.3 | 0.63 | 1.8 | 3.2 | 0.18 |
| 28 | 6.6 | 2.9 | 2.7 | 3.3 | 6.1 | 3.7 | 46 | 3.6 | 0.23 | 0.80 | 2.3 | 1.6 |
| 29 | 5.4 | 5.6 | 2.4 | 2.9 | --- | 17 | 21 | 3.2 | 0.09 | 0.10 | 1.5 | 3.7 |
| 30 | 4.4 | 21 | 1.8 | 4.2 | --- | 12 | 13 | 2.6 | 0.09 | 0.10 | 1.0 | 1.7 |
| 31 | 4.0 | --- | 1.7 | 7.2 | --- | 8.3 | --- | e2.5 | --- | 0.03 | 0.69 | --- |
| TOTAL | 764.28 | 103.9 | 131.2 | 77.9 | 371.4 | 491.1 | 726.6 | 947.6 | 171.19 | 93.90 | 281.32 | 56.07 |
| MEAN | 24.65 | 3.463 | 4.232 | 2.513 | 13.26 | 15.84 | 24.22 | 30.57 | 5.706 | 3.029 | 9.075 | 1.869 |
| MAX | 200 | 21 | 10 | 7.2 | 59 | 97 | 104 | 383 | 34 | 57 | 90 | 11 |
| MIN | 0.98 | 1.5 | 1.7 | 1.1 | 3.5 | 3.0 | 5.6 | 2.5 | 0.09 | 0.00 | 0.00 | 0.00 |
| CFSM | 1.90 | 0.27 | 0.33 | 0.19 | 1.02 | 1.22 | 1.86 | 2.35 | 0.44 | 0.23 | 0.70 | 0.14 |
| IN. | 2.19 | 0.30 | 0.38 | 0.22 | 1.06 | 1.41 | 2.08 | 2.71 | 0.49 | 0.27 | 0.81 | 0.16 |
| e Estimated |
| STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1986 - 2002, BY WATER YEAR (WY) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MEAN | 7.253 | 11.68 | 8.855 | 11.17 | 14.38 | 14.56 | 18.00 | 16.45 | 12.31 | 10.27 | 8.857 | 7.090 |
| MAX | 24.7 | 37.4 | 28.7 | 30.6 | 54.5 | 27.7 | 53.4 | 49.3 | 57.6 | 58.6 | 28.2 | 20.6 |
| (WY) | 2002 | 1991 | 1988 | 1993 | 1997 | 1990 | 1999 | 1990 | 1993 | 1996 | 1998 | 1989 |
| MIN | 1.11 | 0.86 | 1.03 | 2.37 | 2.08 | 3.54 | 5.30 | 1.25 | 1.02 | 0.14 | 0.50 | 0.095 |
| (WY) | 1993 | 2000 | 1996 | 2000 | 1993 | 2000 | 1989 | 1992 | 1992 | 1991 | 1991 | 1995 |
| SUMMARY STATISTICS | FOR 2001 CALENDAR YEAR | FOR 2002 WATER YEAR | WATER YEARS 1986 - 2002 | |||
|---|---|---|---|---|---|---|
| ANNUAL TOTAL | 4277.05 | 4216.46 | ||||
| ANNUAL MEAN | 11.72 | 11.55 | 11.56 | |||
| HIGHEST ANNUAL MEAN | 17.9 | 1993 | ||||
| LOWEST ANNUAL MEAN | 7.58 | 1994 | ||||
| HIGHEST DAILY MEAN | 265 | Feb 9 | 383 | May 12 | 1220 | Jul 18 1996 |
| LOWEST DAILY MEAN | 0.03 | Jul 16,17,20 | 0.00 A | 0.00 B | ||
| ANNUAL SEVEN-DAY MINIMUM | 0.04 | Jul 14 | 0.00 | Jul 18 | 0.00 | Jul 24 1991 |
| MAXIMUM PEAK FLOW | 1060 | May 12 | 3070 | Jul 18 1996 | ||
| MAXIMUM PEAK STAGE | 13.97 | May 12 | 17.53 | Jul 18 1996 | ||
| ANNUAL RUNOFF (CFSM) | 0.90 | 0.89 | 0.89 | |||
| ANNUAL RUNOFF (INCHES) | 12.24 | 12.07 | 12.08 | |||
| 10 PERCENT EXCEEDS | 28 | 26 | 25 | |||
| 50 PERCENT EXCEEDS | 4.9 | 4.1 | 3.7 | |||
| 90 PERCENT EXCEEDS | 1.6 | 0.11 | 0.38 | |||