LOCATION.-- Lat 41°32'11", long 88°04'57" (NAD of 1983), in NE1/4NE1/4 sec. 9, T.35 N., R.10 E., Will County, Hydrologic Unit 07120004, on the downstream side of State Highway 53 (Ruby St.) bridge, and at river mile 15.7. |
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DRAINAGE AREA.-- 1,503 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: February 2005 to current year. |
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STAGE: February 2005 to current year. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1982-87. |
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GAGE.-- Water-stage recorder, acoustic-velocity meter, and satellite telemeter. Datum of gage is 0.00 ft above NGVD of 1929 (-0.29 ft NAVD 1988) (U.S. Army Corps of Engineers bench mark). |
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REMARKS.-- Flow regulated by navigation dams upstream and downstream from the gage. Since Jan. 17, 1900, flow includes diversion from Lake Michigan through the Chicago Sanitary and Ship Canal. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 11,500 ft3/s, Aug. 20, 2005, gage height, 539.82 ft; maximum gage height, 539.91 ft, Aug. 20, 2005, discharge, 10,100 ft3/s; periods of no flow or reverse flow are possible at this site. |
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EXTREMES OUTSIDE PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum measured discharge, 28,000 ft3/s, July 18, 1996, gage height unknown; maximum observed gage height, 539.96 ft, Jan. 13, 2005. |
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REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. |
Discharge, cubic feet per second, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | --- | --- | --- | --- | --- | 3960 | 4980 | 2460 | 2480 | e3450 | 2970 | e4260 |
2 | --- | --- | --- | --- | --- | 3440 | 4320 | 2500 | 2490 | 3020 | 3220 | e3750 |
3 | --- | --- | --- | --- | --- | 3900 | 4020 | 2410 | 2840 | 3000 | 3430 | e3730 |
4 | --- | --- | --- | --- | --- | 3220 | 4190 | 2670 | 3120 | 2860 | 3210 | e4060 |
5 | --- | --- | --- | --- | --- | 3330 | 3220 | 2350 | 3540 | 3010 | 3330 | e4180 |
6 | --- | --- | --- | --- | --- | 3070 | 3670 | 2720 | 3820 | 3450 | 3340 | e3610 |
7 | --- | --- | --- | --- | --- | 3000 | 3270 | 2490 | 3110 | 3110 | 3200 | e3980 |
8 | --- | --- | --- | --- | 5100 | 2820 | 3170 | 2490 | 3310 | 3290 | 3580 | e4120 |
9 | --- | --- | --- | --- | 4660 | 3080 | 2820 | 2870 | 2620 | 3200 | 3290 | e3580 |
10 | --- | --- | --- | --- | 4550 | 3430 | 3320 | 2500 | 3030 | 3160 | 3070 | e3980 |
11 | --- | --- | --- | --- | 4120 | 3180 | 3110 | 4070 | 2920 | 2950 | 4380 | e3930 |
12 | --- | --- | --- | --- | 3720 | 3390 | 3910 | 3300 | e2840 | 3480 | 3420 | e3570 |
13 | --- | --- | --- | --- | 4810 | 2930 | 3500 | 3310 | e3010 | 2740 | 4520 | e3510 |
14 | --- | --- | --- | --- | 7680 | 3330 | 4190 | 3370 | 2840 | 3380 | 3750 | e3300 |
15 | --- | --- | --- | --- | 8560 | 2690 | 3080 | 2920 | 2670 | 3330 | 3940 | e3860 |
16 | --- | --- | --- | --- | 7620 | 2700 | 3480 | 2540 | 2810 | 3100 | 3710 | e4970 |
17 | --- | --- | --- | --- | 6890 | 2780 | 3180 | 2480 | 2770 | 2860 | 3320 | e4670 |
18 | --- | --- | --- | --- | 5140 | 3140 | 2930 | 3130 | 2590 | 3220 | 3900 | e4790 |
19 | --- | --- | --- | --- | 5080 | 2900 | 2580 | 4670 | 2690 | 3000 | 3920 | e3810 |
20 | --- | --- | --- | --- | 5510 | 2740 | 2780 | 4060 | 2690 | 3400 | e7320 | e4060 |
21 | --- | --- | --- | --- | 5040 | 2990 | 2410 | 5120 | 2710 | 3290 | 4890 | e3760 |
22 | --- | --- | --- | --- | 4730 | 2860 | 4550 | 3880 | 2470 | 3670 | e4460 | e4200 |
23 | --- | --- | --- | --- | 4530 | 2590 | 2970 | 3240 | 2770 | 3580 | e3410 | e4030 |
24 | --- | --- | --- | --- | 3940 | 3280 | 3470 | 3080 | e2670 | 3270 | e3780 | e4550 |
25 | --- | --- | --- | --- | 3810 | 3610 | 2620 | 2910 | e3120 | 3610 | e3510 | e4350 |
26 | --- | --- | --- | --- | 3650 | 3360 | 2920 | 2750 | e3100 | 5280 | e3300 | e3630 |
27 | --- | --- | --- | --- | 3440 | 3360 | 2620 | 2770 | e3000 | 4000 | e3070 | e5520 |
28 | --- | --- | --- | --- | 4790 | 3210 | 2580 | 2640 | e3230 | 4610 | e3510 | e5220 |
29 | --- | --- | --- | --- | --- | 2880 | 2780 | 2780 | e3170 | 3470 | e3190 | e6260 |
30 | --- | --- | --- | --- | --- | 4470 | 2480 | 2520 | e3050 | 3750 | e3160 | e5110 |
31 | --- | --- | --- | --- | --- | 4490 | --- | 2410 | --- | 3550 | e3630 | --- |
TOTAL | --- | --- | --- | --- | --- | 100130 | 99120 | 93410 | 87480 | 105090 | 114730 | 126350 |
MEAN | --- | --- | --- | --- | --- | 3230 | 3304 | 3013 | 2916 | 3390 | 3701 | 4212 |
MAX | --- | --- | --- | --- | --- | 4490 | 4980 | 5120 | 3820 | 5280 | 7320 | 6260 |
MIN | --- | --- | --- | --- | --- | 2590 | 2410 | 2350 | 2470 | 2740 | 2970 | 3300 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 2005 - 2005, BY WATER YEAR (WY) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
MEAN | --- | --- | --- | --- | --- | 3230 | 3304 | 3013 | 2916 | 3390 | 3701 | 4212 |
MAX | --- | --- | --- | --- | --- | 3230 | 3304 | 3013 | 2916 | 3390 | 3701 | 4212 |
(WY) | --- | --- | --- | --- | --- | 2005 | 2005 | 2005 | 2005 | 2005 | 2005 | 2005 |
MIN | --- | --- | --- | --- | --- | 3230 | 3304 | 3013 | 2916 | 3390 | 3701 | 4212 |
(WY) | --- | --- | --- | --- | --- | 2005 | 2005 | 2005 | 2005 | 2005 | 2005 | 2005 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |