LOCATION.-- Lat 41°32'24", long 87°38'57" (NAD of 1927), in NE1/4NW1/4 sec.8, T.35 N., R.14 E., Cook County, Hydrologic Unit 07120003, on left bank at downstream side of Riegel Road Bridge at Homewood city limits, 0.1 mi north of Holbrook Road, 0.8 mi east of Flossmoor, and at mile 1.2. | |
DRAINAGE AREA.-- 23.5 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: May 1948 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). | |
STAGE: Water years 1994-2002. | |
REVISED RECORDS.-- WSP 1437: 1948(M), 1953, 1955. WDR IL-75-1: Drainage area. WDR IL-81-2: 1955(M), 1957(M), 1968(M), 1974(M). | |
GAGE.-- Water-stage recorder and phone telemeter. Datum of gage is 616.80 ft above NGVD of 1929. Prior to Sept. 9, 1948, nonrecording gage at same site and datum. | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 2,220 ft3/s, July 18, 1996, gage height, 12.59 ft; no flow at times in several years. | |
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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | 1.2 | 6.1 | 33 | e3.4 | 52 | 9.8 | 10 | 19 | 5.5 | 1.9 | 0.63 | 0.00 |
| 2 | 1.2 | 41 | 20 | e3.3 | 36 | 20 | 79 | 19 | 4.8 | 1.4 | 1.3 | 4.0 |
| 3 | 1.5 | 25 | 13 | e3.4 | 25 | e28 | 55 | 13 | 4.9 | 1.2 | 0.52 | 2.2 |
| 4 | 11 | 16 | 10 | e3.7 | e19 | e24 | 30 | 9.7 | 4.6 | 5.1 | 0.41 | 0.48 |
| 5 | 92 | 10 | 11 | e3.9 | e14 | 21 | 20 | 7.9 | 4.7 | 8.5 | 6.0 | 0.24 |
| 6 | 37 | 6.9 | 13 | e4.0 | 11 | 25 | 14 | 19 | 4.1 | 3.8 | 1.8 | 0.13 |
| 7 | 16 | 5.6 | 8.4 | e4.0 | 8.7 | 61 | 17 | 17 | 4.0 | 1.9 | 0.93 | 0.04 |
| 8 | 7.7 | 4.7 | 6.0 | 3.9 | 8.9 | 180 | 142 | 43 | 3.7 | 1.4 | 0.51 | 0.02 |
| 9 | 4.2 | 4.5 | 5.0 | 3.9 | 19 | 231 | 224 | 134 | 3.3 | 43 | 0.32 | 0.02 |
| 10 | 3.0 | 4.2 | 4.1 | 3.7 | 58 | 99 | 80 | 56 | 4.4 | 17 | 0.31 | 1.9 |
| 11 | 2.8 | 3.1 | 3.8 | 3.3 | 47 | 57 | 46 | 192 | 22 | 6.9 | 0.16 | 1.1 |
| 12 | 73 | 2.7 | 4.1 | 2.8 | 31 | 41 | 32 | 728 | 14 | 3.5 | 0.08 | 0.80 |
| 13 | 149 | 2.5 | 8.2 | 2.6 | 26 | 32 | 23 | 267 | 6.9 | 2.0 | 0.04 | 0.37 |
| 14 | 295 | 5.5 | 13 | 2.5 | 19 | 35 | 17 | 103 | 9.7 | 1.2 | 1.0 | 0.13 |
| 15 | 88 | 4.3 | 13 | 2.6 | 17 | 26 | 14 | 58 | 11 | 0.95 | 0.72 | 0.31 |
| 16 | 52 | 3.5 | 10 | 2.5 | 15 | 16 | 11 | 69 | 5.4 | 0.84 | 1.2 | 0.47 |
| 17 | 34 | 2.9 | 28 | e2.5 | 12 | 13 | 11 | 71 | 3.5 | 0.79 | 1.7 | 0.16 |
| 18 | 21 | 2.8 | 25 | e2.4 | 9.8 | 11 | 9.2 | 41 | 2.9 | 0.88 | 1.1 | 4.9 |
| 19 | 13 | 5.0 | 17 | e2.3 | 25 | 9.5 | 8.0 | 29 | 2.6 | 0.84 | 6.4 | 5.7 |
| 20 | 8.3 | 4.2 | 12 | e2.2 | 80 | 9.5 | 45 | 22 | 2.2 | 0.66 | 3.5 | 18 |
| 21 | 6.9 | 3.4 | 9.4 | e2.1 | 51 | 8.8 | 41 | 16 | 2.1 | 0.70 | 1.5 | 6.6 |
| 22 | 5.9 | 2.8 | 8.4 | e2.1 | 31 | 7.0 | 34 | 11 | 1.9 | 0.79 | 1.4 | 3.2 |
| 23 | 91 | 2.4 | 10 | 3.4 | 22 | 6.2 | 22 | 9.9 | 1.8 | 0.52 | 1.4 | 1.9 |
| 24 | 91 | 2.9 | 7.3 | 9.7 | 17 | 6.2 | 22 | 68 | 1.7 | 0.45 | 1.6 | 1.0 |
| 25 | 75 | 6.4 | e6.0 | 7.6 | 15 | 6.2 | 22 | 33 | 1.6 | 0.32 | 0.73 | 0.63 |
| 26 | 39 | 4.5 | e5.1 | 5.5 | 21 | 6.6 | 14 | 21 | 7.4 | 0.46 | 0.52 | 0.50 |
| 27 | 25 | 5.6 | e4.7 | 6.4 | 16 | 6.2 | 38 | 14 | 25 | 4.3 | 0.32 | 0.45 |
| 28 | 18 | 3.8 | e4.4 | 6.1 | 12 | 6.0 | 94 | 9.9 | 8.6 | 2.5 | 0.11 | 0.39 |
| 29 | 17 | 6.2 | e4.1 | 8.5 | --- | 12 | 43 | 8.4 | 3.7 | 2.1 | 0.04 | 0.24 |
| 30 | 14 | 56 | e3.8 | 12 | --- | 14 | 26 | 8.3 | 2.5 | 2.6 | 0.04 | 0.70 |
| 31 | 8.0 | --- | e3.6 | 32 | --- | 9.1 | --- | 6.3 | --- | 1.0 | 0.02 | --- |
| TOTAL | 1301.7 | 254.5 | 324.4 | 158.3 | 718.4 | 1037.1 | 1243.2 | 2123.4 | 180.5 | 119.50 | 36.31 | 56.58 |
| MEAN | 41.99 | 8.483 | 10.46 | 5.106 | 25.66 | 33.45 | 41.44 | 68.50 | 6.017 | 3.855 | 1.171 | 1.886 |
| MAX | 295 | 56 | 33 | 32 | 80 | 231 | 224 | 728 | 25 | 43 | 6.4 | 18 |
| MIN | 1.2 | 2.4 | 3.6 | 2.1 | 8.7 | 6.0 | 8.0 | 6.3 | 1.6 | 0.32 | 0.02 | 0.00 |
| CFSM | 1.79 | 0.36 | 0.45 | 0.22 | 1.09 | 1.42 | 1.76 | 2.91 | 0.26 | 0.16 | 0.05 | 0.08 |
| IN. | 2.06 | 0.40 | 0.51 | 0.25 | 1.14 | 1.64 | 1.97 | 3.36 | 0.29 | 0.19 | 0.06 | 0.09 |
| e Estimated |
| STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1948 - 2002, BY WATER YEAR (WY) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MEAN | 8.121 | 13.64 | 16.56 | 17.54 | 22.32 | 33.23 | 33.57 | 26.22 | 21.40 | 12.11 | 8.146 | 8.237 |
| MAX | 76.1 | 96.7 | 105 | 73.7 | 88.4 | 120 | 97.7 | 95.6 | 119 | 85.9 | 60.0 | 77.1 |
| (WY) | 1955 | 1991 | 1983 | 1969 | 1997 | 1979 | 1970 | 1996 | 1993 | 1957 | 1968 | 1961 |
| MIN | 0.27 | 0.14 | 0.073 | 0.032 | 0.38 | 2.85 | 3.57 | 2.49 | 1.14 | 0.55 | 0.32 | 0.25 |
| (WY) | 1953 | 2000 | 1977 | 1977 | 1978 | 2000 | 1986 | 1992 | 1988 | 1988 | 1948 | 1953 |
| SUMMARY STATISTICS | FOR 2001 CALENDAR YEAR | FOR 2002 WATER YEAR | WATER YEARS 1948 - 2002 | |||
|---|---|---|---|---|---|---|
| ANNUAL TOTAL | 6974.09 | 7553.89 | ||||
| ANNUAL MEAN | 19.11 | 20.70 | 18.46 | |||
| HIGHEST ANNUAL MEAN | 42.3 | 1993 | ||||
| LOWEST ANNUAL MEAN | 4.82 | 1963 | ||||
| HIGHEST DAILY MEAN | 460 | Feb 9 | 728 | May 12 | 1500 | Jul 13 1957 |
| LOWEST DAILY MEAN | 0.42 | Jul 15 | 0.00 | Sep 1 | 0.00 | A |
| ANNUAL SEVEN-DAY MINIMUM | 0.48 | Jul 12 | 0.15 | Aug 26 | 0.00 | Aug 8 1975 |
| MAXIMUM PEAK FLOW | 949 | May 12 | 2220 | Jul 18 1996 | ||
| MAXIMUM PEAK STAGE | 10.52 | May 12 | 12.59 | Jul 18 1996 | ||
| ANNUAL RUNOFF (CFSM) | 0.81 | 0.88 | 0.79 | |||
| ANNUAL RUNOFF (INCHES) | 11.04 | 11.96 | 10.67 | |||
| 10 PERCENT EXCEEDS | 48 | 46 | 42 | |||
| 50 PERCENT EXCEEDS | 6.4 | 6.4 | 4.6 | |||
| 90 PERCENT EXCEEDS | 1.4 | 0.65 | 0.47 | |||