LOCATION.-- Lat 42°03'37", long 88°01'00" (NAD of 1927), in SW1/4NW1/4 sec.8, T.41 N., R.11 E., Cook County, Hydrologic Unit 07120004, on left bank at upstream side of bridge on Algonquin Road in Rolling Meadows, 0.25 mi downstream from Arlington Heights Branch Salt Creek, and at mile 35.6. | |
DRAINAGE AREA.-- 30.5 mi2. | |
PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE | |
DISCHARGE: October 1973 to current year. August 1950 to September 1971, and October 1972 to September 1973 at site 0.9 mi downstream, published as Salt Creek near Arlington Heights. Records may not be equivalent. | |
STAGE: Water years 1994 to current year. | |
PARTIAL RECORD: Annual maximum, water year 1972. | |
REVISED RECORDS.-- WDR IL-75-1: Drainage area. WDR IL-93-2: 1992. | |
GAGE.-- Water-stage recorder, phone telemeter, and crest-stage gage. Datum of gage is 686.40 ft above NGVD of 1929 (Cook County Highway Department bench mark). | |
EXTREMES FOR PERIOD OF RECORD.-- | |
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,650 ft3/s, Aug. 14, 1987, gage height, 14.03 ft; no flow, Jan. 12-Feb. 8, 1977, as a result of freezeup, Aug. 20, 25, 1986, and Sept. 8, 9, 11, 1999. | |
REMARKS FOR CURRENT YEAR.-- Records good 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 | 4.6 | 2.1 | 5.1 | 4.8 | e1.1 | e0.80 | 21 | 550 | 21 | 1.2 | 69 | 6.0 |
| 2 | 39 | 2.3 | 3.3 | 4.2 | e1.2 | e0.81 | 18 | 203 | 15 | 1.0 | 24 | 2.3 |
| 3 | 15 | 2.4 | 4.0 | 3.8 | e1.5 | e0.85 | 25 | 76 | 14 | 1.0 | 107 | 1.5 |
| 4 | 54 | 2.6 | 3.7 | e3.2 | e1.4 | e0.91 | 170 | 94 | 11 | 1.3 | 66 | 1.2 |
| 5 | 36 | 3.8 | 3.1 | e3.0 | e1.30 | e0.97 | 163 | 385 | 8.3 | 29 | 34 | 1.3 |
| 6 | 19 | 4.2 | 2.9 | e2.9 | e1.2 | e0.99 | 66 | 118 | 7.0 | 38 | 89 | 1.0 |
| 7 | 11 | 3.0 | 3.3 | e3.0 | e1.0 | e1.0 | 59 | 72 | 5.6 | 50 | 75 | 1.0 |
| 8 | 7.6 | 2.8 | 3.3 | e3.2 | e1.0 | e1.0 | 50 | 69 | 32 | 49 | 33 | 0.90 |
| 9 | 5.5 | 2.8 | 2.8 | e3.4 | e0.98 | e1.1 | 56 | 272 | 16 | 35 | 19 | 0.99 |
| 10 | 7.2 | 4.9 | 2.8 | e2.7 | e0.96 | e1.4 | 56 | 120 | 9.9 | 30 | 11 | 0.98 |
| 11 | 9.0 | 3.2 | 2.9 | e2.1 | e0.95 | 3.6 | 43 | 316 | 9.2 | 13 | 8.2 | 1.1 |
| 12 | 4.6 | 3.0 | 3.3 | e1.5 | e0.88 | 16 | 33 | 162 | 5.9 | 6.6 | 7.4 | 2.0 |
| 13 | 3.8 | 2.6 | 3.4 | e1.3 | e0.82 | 29 | 25 | 78 | 5.1 | 4.1 | 5.7 | 1.3 |
| 14 | 3.2 | 4.2 | 3.4 | e1.2 | e0.79 | 30 | 20 | 103 | 4.2 | 3.3 | 17 | 19 |
| 15 | 3.4 | 7.0 | 3.4 | e1.1 | e0.77 | 31 | 16 | 92 | 3.2 | 152 | 10 | 4.3 |
| 16 | 2.7 | 4.0 | 3.2 | e1.1 | e0.74 | 33 | 14 | 53 | 3.2 | 41 | 5.3 | 1.9 |
| 17 | 3.6 | 3.5 | 3.2 | e1.0 | e0.72 | 32 | 11 | 40 | 2.3 | 21 | 4.0 | 1.3 |
| 18 | 5.0 | 4.4 | 40 | e0.97 | e0.74 | 26 | 10 | 34 | 16 | 12 | 2.8 | 1.1 |
| 19 | 3.3 | 14 | 31 | e0.92 | e0.75 | 24 | 9.3 | 31 | 20 | 5.8 | 2.2 | 1.1 |
| 20 | 2.7 | 7.2 | 20 | e0.92 | e0.74 | 39 | 11 | 39 | 6.8 | 48 | 2.3 | 0.85 |
| 21 | 2.5 | 15 | 14 | e0.90 | e0.73 | 32 | 9.3 | 50 | 4.2 | 141 | 2.1 | 0.79 |
| 22 | 2.4 | 10 | 9.5 | e0.88 | e0.74 | 25 | 7.8 | 40 | 3.0 | 33 | 1.6 | 5.0 |
| 23 | 2.1 | 6.2 | 8.1 | e0.86 | e0.75 | 20 | 6.5 | 27 | 2.7 | 15 | 1.4 | 1.9 |
| 24 | 2.9 | 4.6 | 6.1 | e0.84 | e0.76 | 19 | 8.0 | 18 | 6.1 | 8.6 | 1.2 | 1.4 |
| 25 | 15 | 4.6 | 5.9 | e0.82 | e0.77 | 33 | 12 | 15 | 4.2 | 5.3 | 1.4 | 0.93 |
| 26 | 6.8 | 4.0 | 5.2 | e0.82 | e0.78 | 23 | 6.2 | 13 | 1.9 | 3.5 | 3.5 | 15 |
| 27 | 4.5 | 4.6 | 4.8 | e0.82 | e0.82 | 17 | 8.5 | 12 | 1.4 | 2.8 | 1.8 | 12 |
| 28 | 3.6 | 3.7 | 4.7 | e0.84 | e0.79 | 37 | 10 | 22 | 1.3 | 3.5 | 1.3 | 2.5 |
| 29 | 3.0 | 3.9 | 4.1 | e0.86 | --- | 41 | 8.9 | 25 | 1.2 | 2.8 | 1.1 | 1.5 |
| 30 | 2.7 | 5.2 | 4.7 | e0.90 | --- | 28 | 71 | 23 | 1.6 | 2.3 | 0.97 | 1.1 |
| 31 | 2.6 | --- | 5.5 | e0.96 | --- | 22 | --- | 40 | --- | 1.9 | 1.6 | --- |
| TOTAL | 288.3 | 145.8 | 220.7 | 55.81 | 25.68 | 570.43 | 1024.5 | 3192 | 243.3 | 762.0 | 609.87 | 93.24 |
| MEAN | 9.30 | 4.86 | 7.12 | 1.80 | 0.92 | 18.4 | 34.1 | 103 | 8.11 | 24.6 | 19.7 | 3.11 |
| MAX | 54 | 15 | 40 | 4.8 | 1.5 | 41 | 170 | 550 | 32 | 152 | 107 | 19 |
| MIN | 2.1 | 2.1 | 2.8 | 0.82 | 0.72 | 0.80 | 6.2 | 12 | 1.2 | 1.0 | 0.97 | 0.79 |
| CFSM | 0.30 | 0.16 | 0.23 | 0.06 | 0.03 | 0.60 | 1.12 | 3.38 | 0.27 | 0.81 | 0.65 | 0.10 |
| IN. | 0.35 | 0.18 | 0.27 | 0.07 | 0.03 | 0.70 | 1.25 | 3.89 | 0.30 | 0.93 | 0.74 | 0.11 |
| e Estimated |
| STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1974 - 2003, BY WATER YEAR (WY) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MEAN | 19.4 | 27.9 | 27.4 | 24.3 | 34.1 | 48.5 | 58.1 | 44.5 | 28.4 | 18.5 | 27.6 | 20.1 |
| MAX | 111 | 120 | 107 | 85.7 | 113 | 202 | 136 | 148 | 87.6 | 83.6 | 136 | 77.0 |
| (WY) | 2002 | 1986 | 1983 | 1999 | 1997 | 1979 | 1983 | 1996 | 1996 | 1993 | 1987 | 2001 |
| MIN | 2.42 | 2.32 | 0.62 | 0.13 | 0.92 | 10.5 | 9.73 | 7.33 | 3.15 | 3.00 | 2.56 | 1.63 |
| (WY) | 1980 | 1977 | 1977 | 1977 | 2003 | 2000 | 1989 | 1977 | 1988 | 1979 | 1986 | 1974 |
| SUMMARY STATISTICS | FOR 2002 CALENDAR YEAR | FOR 2003 WATER YEAR | WATER YEARS 1974 - 2003 | |||
|---|---|---|---|---|---|---|
| ANNUAL TOTAL | 10621.77 | 7231.63 | ||||
| ANNUAL MEAN | 29.1 | 19.8 | 31.5 | |||
| HIGHEST ANNUAL MEAN | 52.1 | 1993 | ||||
| LOWEST ANNUAL MEAN | 9.25 | 1977 | ||||
| HIGHEST DAILY MEAN | 982 | Aug 22 | 550 | May 1 | 1180 | Aug 14 1987 |
| LOWEST DAILY MEAN | 0.37 | Aug 12 | 0.72 A | Feb 17 | 0.00 | B |
| ANNUAL SEVEN-DAY MINIMUM | 0.98 | Aug 6 | 0.74 A | Feb 16 | 0.00 | Jan 12 1977 |
| MAXIMUM PEAK FLOW | 811 | May 1 | 1650 | Aug 14 1987 | ||
| MAXIMUM PEAK STAGE | 7.67 | May 1 | 14.03 | Aug 14 1987 | ||
| INSTANTANEOUS LOW FLOW | 0.62 | Sep 21 | ||||
| ANNUAL RUNOFF (CFSM) | 0.95 | 0.65 | 1.03 | |||
| ANNUAL RUNOFF (INCHES) | 12.96 | 8.82 | 14.04 | |||
| 10 PERCENT EXCEEDS | 55 | 45 | 72 | |||
| 50 PERCENT EXCEEDS | 8.7 | 4.2 | 13 | |||
| 90 PERCENT EXCEEDS | 2.2 | 0.93 | 1.6 | |||
B - Jan. 12 - Feb. 8, 1977, result of freezeup; Aug. 20, 25, 1986 and Sept. 8, 9, 11, 1999. |