Station list
Available data
ILLINOIS RIVER BASIN
05535500 WEST FORK OF NORTH BRANCH CHICAGO RIVER AT NORTHBROOK, IL
LOCATION.--Lat 42°08'18", long 87°50'04", in SW1/4SE1/4 sec.4, T.42 N., R.12 E., Cook County, Hydrologic Unit 07120003, on
left bank at upstream side of bridge on State Highway 68 at Northbrook, and at mile 7.9.
DRAINAGE AREA.--11.5 mi2.
PERIOD OF RECORD.--August 1952 to current year.
GAGE.--Water-stage recorder. Datum of gage is 637.98 ft above sea level (Cook County Highway Department bench mark).
REMARKS.--Records good except those for estimated daily discharges, which are poor. Effluent from sewage-treatment plant,
1.7 mi upstream, averaged about 5.13 ft3/s per day, with a maximum monthly average of 7.84 ft3/s in April and a minimum of 3.36 ft3/s in July. Gage-height telemeter at station.
DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY MEAN VALUES
|
|---|
| DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP
|
|---|
|
|
| 1 | 5.3 | 8.7 | 9.9 | e4.0 | e18 | 9.5 | 3.6 | 31 | 36 | 18 | 5.9 | e5.0
|
| 2 | 8.9 | 7.6 | 6.3 | e4.0 | e35 | 14 | 3.3 | 25 | 56 | 6.5 | 5.9 | e4.5
|
| 3 | 12 | 7.0 | 6.4 | e4.0 | e56 | 13 | 3.8 | 7.5 | 18 | 5.4 | 6.0 | e4.2
|
| 4 | 5.0 | 13 | 7.0 | e4.1 | 34 | 8.8 | 5.1 | 11 | 9.3 | 4.8 | 5.7 | e4.0
|
| 5 | 52 | 8.6 | 6.0 | e4.1 | 34 | 7.7 | 4.5 | 11 | 7.4 | 4.5 | 5.8 | e3.6
|
|
|
| 6 | 19 | 7.2 | 52 | e4.1 | 30 | 11 | 4.9 | 22 | 8.2 | 4.6 | 4.3 | e5.0
|
| 7 | 11 | 5.7 | 55 | e4.0 | 25 | 11 | 3.5 | 12 | 18 | 5.9 | e4.0 | e4.7
|
| 8 | 7.5 | 8.2 | 18 | e3.9 | 20 | 9.2 | 34 | 8.2 | 8.7 | 7.2 | e4.2 | e3.9
|
| 9 | 6.9 | 8.8 | 13 | e4.2 | 20 | 9.9 | 184 | 6.8 | 6.2 | 11 | e4.0 | e3.9
|
| 10 | 5.5 | 129 | 10 | e4.1 | 18 | 13 | 51 | 6.2 | 11 | 6.5 | e3.8 | 7.0
|
|
|
| 11 | 4.9 | 48 | 9.0 | e4.0 | 28 | 15 | 24 | 11 | 19 | 3.8 | e3.6 | 6.6
|
| 12 | 5.0 | 19 | 7.9 | e4.0 | 20 | 16 | 16 | 70 | 8.6 | 3.9 | 5.2 | 9.3
|
| 13 | 5.0 | 15 | 6.9 | e4.0 | 12 | 13 | 16 | 19 | 150 | 4.0 | 6.1 | 9.2
|
| 14 | 4.6 | 13 | e6.6 | e3.8 | 9.1 | 13 | 17 | 11 | 87 | 3.8 | 4.6 | 7.1
|
| 15 | 4.8 | 9.0 | e6.4 | e5.0 | 8.5 | 16 | 33 | 7.2 | 42 | 4.7 | e6.0 | 6.9
|
|
|
| 16 | 4.6 | 9.7 | e6.2 | e8.0 | 8.9 | 31 | 147 | 6.1 | 31 | 4.2 | e10 | 6.9
|
| 17 | 155 | 9.4 | 6.0 | e16 | 8.1 | 75 | 47 | 19 | 37 | 6.1 | e25 | 6.8
|
| 18 | 156 | 7.0 | 5.9 | 19 | 6.9 | 47 | 23 | 14 | 32 | 3.9 | e40 | 6.3
|
| 19 | 41 | 6.7 | 5.3 | 11 | 6.3 | 22 | 28 | 9.0 | 16 | 5.6 | 64 | 6.7
|
| 20 | 24 | 6.5 | 4.9 | 9.5 | 5.5 | 16 | 34 | 5.7 | 6.4 | 5.9 | 16 | 8.2
|
|
|
| 21 | 16 | 5.7 | e4.8 | 19 | 4.8 | 11 | 56 | 9.6 | 6.9 | 6.1 | 8.7 | 18
|
| 22 | 9.7 | 5.6 | e4.6 | 190 | 4.6 | 9.6 | 212 | 8.6 | 9.7 | 5.9 | 7.0 | 8.1
|
| 23 | 7.7 | 5.8 | 4.6 | 192 | 4.4 | 9.7 | 239 | 7.3 | 9.0 | 26 | 5.8 | 7.0
|
| 24 | 6.2 | 5.4 | 4.6 | 130 | 4.5 | 8.5 | 76 | 5.1 | 9.4 | 18 | 19 | 6.4
|
| 25 | 5.4 | 5.7 | 4.4 | 76 | 6.0 | 7.8 | 53 | 4.4 | 8.4 | 8.6 | 23 | 6.0
|
|
|
| 26 | 6.0 | 5.5 | 4.4 | e72 | 8.2 | 5.6 | 68 | 3.5 | 4.7 | 8.1 | 13 | 6.4
|
| 27 | 21 | 4.9 | 4.4 | e70 | 18 | 4.8 | 79 | 3.5 | 5.1 | 7.3 | 8.4 | 13
|
| 28 | 17 | 4.7 | e4.5 | 57 | 14 | 4.4 | 110 | 3.0 | 5.8 | 6.2 | 6.8 | 106
|
| 29 | 26 | 4.7 | e4.5 | 34 | --- | 4.1 | 53 | 2.7 | 5.7 | 6.5 | 5.7 | 51
|
| 30 | 20 | 18 | e4.4 | 28 | --- | 3.8 | 39 | 2.5 | 4.6 | 6.6 | 4.7 | 15
|
|
|
| 31 | 9.7 | --- | e4.2 | e23 | --- | 3.5 | --- | 8.5 | --- | 6.2 | e4.8 | ---
|
| TOTAL | 682.7 | 413.1 | 298.1 | 1015.8 | 467.8 | 443.9 | 1667.7 | 371.4 | 677.1 | 225.8 | 337.0 | 356.7
|
| MEAN | 22.0 | 13.8 | 9.62 | 32.8 | 16.7 | 14.3 | 55.6 | 12.0 | 22.6 | 7.28 | 10.9 | 11.9
|
| MAX | 156 | 129 | 55 | 192 | 56 | 75 | 239 | 70 | 150 | 26 | 64 | 106
|
| MIN | 4.6 | 4.7 | 4.2 | 3.8 | 4.4 | 3.5 | 3.3 | 2.5 | 4.6 | 3.8 | 3.6 | 3.6
|
| CFSM | 1.92 | 1.20 | .84 | 2.85 | 1.45 | 1.25 | 4.83 | 1.04 | 1.96 | .63 | .95 | 1.03
|
| IN. | 2.21 | 1.34 | .96 | 3.29 | 1.51 | 1.44 | 5.39 | 1.20 | 2.19 | .73 | 1.09 | 1.15
|
e Estimated
| STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1952 - 1999, BY WATER YEAR (WY)
|
|---|
| MEAN | 8.37 | 11.3 | 12.1 | 10.1 | 14.0 | 23.5 | 25.4 | 15.5 | 14.3 | 11.1 | 10.8 | 9.79
|
| MAX | 23.1 | 40.4 | 51.2 | 40.0 | 43.2 | 86.6 | 57.3 | 67.3 | 41.6 | 59.2 | 57.5 | 50.0
|
| (WY) | 1987 | 1986 | 1983 | 1974 | 1997 | 1979 | 1983 | 1996 | 1978 | 1982 | 1987 | 1986
|
| MIN | .24 | .34 | .54 | .38 | 1.04 | 3.01 | 6.58 | 4.61 | 1.51 | .50 | .47 | .24
|
| (WY) | 1954 | 1954 | 1954 | 1954 | 1963 | 1956 | 1953 | 1953 | 1956 | 1956 | 1955 | 1952
|
| SUMMARY STATISTICS | FOR 1998 CALENDAR YEAR | FOR 1999 WATER YEAR | WATER YEARS 1952 - 1999 |
|---|
| ANNUAL TOTAL | 6925.0 | | 6957.1 | | |
|
| ANNUAL MEAN | 19.0 | | 19.1 | | 13.8 |
|
| HIGHEST ANNUAL MEAN | | | | | 22.5 | 1993
|
| LOWEST ANNUAL MEAN | | | | | 2.96 | 1953
|
| HIGHEST DAILY MEAN | 207 | Mar 18 | 239 | Apr 23 | 753 | Aug 14 1987
|
| LOWEST DAILY MEAN | 2.8 | Aug 2 | 2.5 | May 30 | .00 | A
|
| ANNUAL SEVEN-DAY MINIMUM | 3.0 | Jul 12 | 3.5 | May 24 | .00 | Oct 27 1956
|
| INSTANTANEOUS PEAK FLOW | | | 522 | Apr 23 | 1190 | Aug 14 1987
|
| INSTANTANEOUS PEAK STAGE | | | 7.05 | Apr 23 | 10.10 | Aug 14 1987
|
| INSTANTANEOUS LOW FLOW | | | 1.5 | May 31 | |
|
| ANNUAL RUNOFF (CFSM) | 1.65 | | 1.66 | | 1.20 |
|
| ANNUAL RUNOFF (INCHES) | 22.40 | | 22.50 | | 16.36 |
|
| 10 PERCENT EXCEEDS | 48 | | 47 | | 29 |
|
| 50 PERCENT EXCEEDS | 8.9 | | 7.9 | | 6.0 |
|
| 90 PERCENT EXCEEDS | 3.8 | | 4.1 | | 1.8 |
|
A - At times in several years.