LOCATION.-- Lat 42°09'10", long 87°49'07" (NAD of 1927), in SW1/4SE1/4 sec.34, T.43 N., R.12 E., Lake County, Hydrologic Unit 07120003, on right bank at upstream side of bridge on Lake-Cook Road, 1.7 mi southeast of Deerfield, 5.7 mi upstream from Skokie River, and at mile 64.7. | |
DRAINAGE AREA.-- 19.7 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: August 1952 to current year. | |
STAGE: Water years 1994 to current year. | |
SURFACE-WATER QUALITY | |
CHEMICAL: Water years 1978-91. | |
REVISED RECORDS.-- WDR IL-75-1: Drainage area. | |
GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 638.88 ft above NGVD of 1929 (Cook County Highway Department bench mark). | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 933 ft3/s, Aug. 14, 1987, gage height, 11.52 ft; maximum gage height, 11.55 ft, Oct. 13, 2001; no flow at times in most years. | |
REMARKS FOR CURRENT YEAR.-- Records fair except those for estimated daily discharges, which are poor. | |
| Discharge, cubic feet per second, WATER YEAR OCTOBER 2002 TO SEPTEMBER 2003
DAILY MEAN VALUES | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
| 1 | 8.1 | 1.5 | 0.89 | 1.1 | 0.81 | 0.38 | 4.9 | 246 | 32 | 1.1 | 3.5 | 1.8 |
| 2 | 15 | 0.80 | 1.1 | 1.0 | 1.9 | e0.40 | 4.0 | 136 | 23 | 1.0 | 3.5 | 0.83 |
| 3 | 9.8 | 0.67 | 1.1 | 0.89 | 2.8 | e0.43 | 8.6 | 74 | 18 | 0.85 | 5.5 | 1.2 |
| 4 | 28 | 1.3 | 0.94 | 0.76 | 1.8 | e0.45 | 71 | 52 | 13 | 2.8 | 12 | 0.58 |
| 5 | 24 | 0.93 | 0.78 | 0.93 | 0.89 | 0.46 | 85 | 224 | 11 | 30 | 8.0 | 0.45 |
| 6 | 14 | 1.0 | 0.64 | 0.99 | 0.65 | 0.47 | 49 | 111 | 8.9 | 86 | 7.6 | 0.37 |
| 7 | 9.4 | 2.0 | 0.73 | 0.87 | 0.51 | 0.47 | 40 | 59 | 7.7 | 97 | 6.9 | 0.35 |
| 8 | 5.7 | 1.6 | 0.78 | 1.0 | e0.43 | e0.47 | 38 | 41 | 18 | 76 | 9.2 | 0.33 |
| 9 | 4.1 | 1.1 | 0.59 | 1.1 | e0.40 | 0.47 | 41 | 106 | 13 | 67 | 6.1 | 0.33 |
| 10 | 3.1 | 0.67 | 0.54 | 1.0 | e0.40 | 0.50 | 45 | 107 | 9.6 | 41 | 4.0 | 0.34 |
| 11 | 2.5 | 1.3 | 0.56 | 0.67 | e0.40 | 0.59 | 34 | 261 | 7.7 | 29 | 3.8 | 0.36 |
| 12 | 2.0 | 1.1 | 0.57 | 0.49 | e0.40 | 0.92 | 27 | 130 | 6.2 | 18 | 2.8 | 0.66 |
| 13 | 1.6 | 1.1 | 0.63 | e0.44 | e0.40 | 5.5 | 21 | 71 | 5.1 | 12 | 2.2 | 5.3 |
| 14 | 1.5 | 1.3 | 0.84 | e0.42 | e0.40 | 13 | 18 | 49 | 4.4 | 7.7 | 1.9 | 21 |
| 15 | 1.3 | 1.5 | 0.90 | 0.41 | e0.40 | 15 | 15 | 46 | 3.5 | 60 | 1.7 | 11 |
| 16 | 1.1 | 1.6 | 0.82 | 0.40 | e0.40 | 11 | 13 | 33 | 2.6 | 35 | 3.1 | 6.5 |
| 17 | 1.1 | 1.5 | 0.68 | e0.39 | e0.40 | 8.1 | 11 | 25 | 2.0 | 36 | 2.4 | 4.5 |
| 18 | 1.1 | 1.3 | 17 | e0.38 | e0.40 | 5.7 | 10 | 20 | 4.4 | 32 | 1.3 | 3.4 |
| 19 | 0.75 | 4.9 | 11 | e0.38 | e0.40 | 6.6 | 9.2 | 17 | 25 | 17 | 0.88 | 2.8 |
| 20 | 0.80 | 2.3 | 5.0 | e0.37 | e0.40 | 12 | 9.5 | 21 | 13 | 13 | 0.55 | 2.0 |
| 21 | 0.64 | 3.6 | 3.6 | e0.37 | e0.40 | 15 | 9.2 | 17 | 9.0 | 17 | 0.52 | 1.4 |
| 22 | 0.60 | 4.7 | 3.2 | e0.37 | e0.40 | 10 | 8.4 | 15 | 6.8 | 16 | 0.46 | 3.7 |
| 23 | 0.81 | 2.5 | 8.1 | e0.37 | e0.40 | 8.4 | 7.9 | 14 | 4.8 | 14 | 0.44 | 2.8 |
| 24 | 0.92 | 2.1 | 1.7 | 0.38 | e0.40 | 6.1 | 7.4 | 12 | 3.5 | 11 | 0.39 | 1.7 |
| 25 | 4.1 | 1.9 | 1.5 | e0.37 | e0.39 | 12 | 7.1 | 10 | 2.6 | 7.9 | 0.36 | 1.5 |
| 26 | 3.6 | 1.6 | 1.3 | e0.38 | e0.38 | 9.1 | 6.7 | 9.4 | 1.6 | 5.1 | 0.50 | 7.0 |
| 27 | 2.2 | 1.6 | 1.1 | e0.39 | 0.38 | 6.4 | 6.0 | 8.8 | 1.1 | 2.7 | 0.40 | 12 |
| 28 | 1.6 | 1.2 | 1.1 | e0.40 | 0.38 | 10 | 5.7 | 37 | 1.6 | 1.8 | 0.51 | 5.3 |
| 29 | 1.2 | 1.2 | 1.00 | e0.41 | --- | 14 | 5.1 | 64 | 2.3 | 2.0 | 0.48 | 3.7 |
| 30 | 2.2 | 1.4 | 1.2 | e0.42 | --- | 8.6 | 15 | 34 | 1.2 | 1.0 | 0.42 | 3.1 |
| 31 | 1.8 | --- | 1.4 | 0.99 | --- | 5.8 | --- | 55 | --- | 1.4 | 0.55 | --- |
| TOTAL | 154.62 | 51.27 | 71.29 | 18.84 | 17.72 | 188.31 | 632.7 | 2105.2 | 262.6 | 742.35 | 91.96 | 106.30 |
| MEAN | 4.99 | 1.71 | 2.30 | 0.61 | 0.63 | 6.07 | 21.1 | 67.9 | 8.75 | 23.9 | 2.97 | 3.54 |
| MAX | 28 | 4.9 | 17 | 1.1 | 2.8 | 15 | 85 | 261 | 32 | 97 | 12 | 21 |
| MIN | 0.60 | 0.67 | 0.54 | 0.37 | 0.38 | 0.38 | 4.0 | 8.8 | 1.1 | 0.85 | 0.36 | 0.33 |
| CFSM | 0.25 | 0.09 | 0.12 | 0.03 | 0.03 | 0.31 | 1.07 | 3.45 | 0.44 | 1.22 | 0.15 | 0.18 |
| IN. | 0.29 | 0.10 | 0.13 | 0.04 | 0.03 | 0.36 | 1.19 | 3.98 | 0.50 | 1.40 | 0.17 | 0.20 |
| e Estimated |
| STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1953 - 2003, BY WATER YEAR (WY) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MEAN | 8.71 | 12.9 | 14.2 | 12.3 | 19.6 | 33.7 | 37.1 | 21.6 | 16.3 | 10.1 | 8.77 | 9.15 |
| MAX | 101 | 76.3 | 95.9 | 62.8 | 64.2 | 153 | 109 | 108 | 64.3 | 59.7 | 59.9 | 70.5 |
| (WY) | 2002 | 1986 | 1983 | 1974 | 1997 | 1979 | 1999 | 1996 | 1996 | 1982 | 1990 | 1972 |
| MIN | 0.094 | 0.16 | 0.048 | 0.000 | 0.082 | 3.89 | 6.40 | 2.16 | 0.79 | 0.44 | 0.22 | 0.023 |
| (WY) | 1961 | 1963 | 1963 | 1963 | 1963 | 1968 | 1986 | 1992 | 1963 | 1965 | 1966 | 1966 |
| SUMMARY STATISTICS | FOR 2002 CALENDAR YEAR | FOR 2003 WATER YEAR | WATER YEARS 1953 - 2003 | |||
|---|---|---|---|---|---|---|
| ANNUAL TOTAL | 5826.46 | 4443.16 | ||||
| ANNUAL MEAN | 16.0 | 12.2 | 17.0 | |||
| HIGHEST ANNUAL MEAN | 32.2 | 1974 | ||||
| LOWEST ANNUAL MEAN | 2.32 | 1963 | ||||
| HIGHEST DAILY MEAN | 310 | Aug 22 | 261 | May 11 | 641 | Oct 14 2001 |
| LOWEST DAILY MEAN | 0.46 | Aug 11 | 0.33 | Sep 8,9 | 0.00 | A |
| ANNUAL SEVEN-DAY MINIMUM | 0.54 | Aug 6 | 0.36 | Sep 5 | 0.00 | Oct 5 1953 |
| MAXIMUM PEAK FLOW | 309 | May 11 | 933 | Aug 14 1987 | ||
| MAXIMUM PEAK STAGE | 8.91 | May 11 | 11.52 | Aug 14 1987 | ||
| INSTANTANEOUS LOW FLOW | 0.28 | Sep 9 | ||||
| ANNUAL RUNOFF (CFSM) | 0.81 | 0.62 | 0.86 | |||
| ANNUAL RUNOFF (INCHES) | 11.00 | 8.39 | 11.72 | |||
| 10 PERCENT EXCEEDS | 35 | 32 | 42 | |||
| 50 PERCENT EXCEEDS | 4.0 | 2.2 | 4.8 | |||
| 90 PERCENT EXCEEDS | 0.67 | 0.40 | 0.40 | |||