Station list     Available data
ILLINOIS RIVER BASIN


05536995       CHICAGO SANITARY AND SHIP CANAL AT ROMEOVILLE, IL

 

LOCATION.-- Lat 41°38'27", long 88°03'34" (NAD of 1983), in SE1/4SW1/4 sec.35, T.37 N., R.10 E., Will County, Hydrologic Unit 07120004, on left bank 40 ft upstream from bridge on Romeoville Road (135th Street) in Romeoville, 5.2 mi upstream from Lockport Lock and Dam, and at mile 6.2.
 

DRAINAGE AREA.-- 739 mi2.
 

PERIOD OF RECORD.--

SURFACE-WATER DISCHARGE AND STAGE
 

DISCHARGE: October 1984 to current year.
 

STAGE: Water years 1994 to current year.

SURFACE-WATER QUALITY
 

CHEMICAL: Water years 1987-92 and 1999 to 2001.
 

WATER TEMPERATURE: Water years 1974-77.
 

REVISED RECORDS.-- WDR IL-86-2: 1985. WDR IL-89-2: 1986. WDR IL-92-2: 1986-89.
 

GAGE.-- Water-stage recorder, acoustic-velocity meter and phone telemeter. Datum of gage is 551.89 ft above NGVD of 1929 (U.S. Army Corps of Engineers bench mark) (551.60 ft NAVD 1988).
 

REMARKS.-- Estimated daily discharges determined from a regression relation between present site and the previous site 5.2 mi downstream. This gaging station provides flow data essential to determine Illinois' diversion of Lake Michigan water. A U.S. Supreme Court Decree limits Illinois' diversion to an average of 3,200 ft3/s. Illinois' diversion includes water diverted from the lake for domestic water supply, for navigation and water-quality improvement in the Chicago Sanitary and Ship Canal system, and the stormwater runoff from a 673 mi2 diverted watershed area. Flows recorded at this station also include nondiversion flows.
 

EXTREMES FOR PERIOD RECORD.--

SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 19,466 ft3/s, Feb. 21, 1997, gage-height, 23.95 ft; maximum gage-height, 26.43 ft, Feb. 4, 1996, discharge, 2,876 ft3/s; no flow or periods of reverse flow at times in most years.
 

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are fair.
Discharge, cubic feet per second, WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 1703  4531  e5130  1968  2095  2800  3383  1623  2272  2910  2288  3724 
2 2656  3233  e3403  4879  2333  2108  2908  1626  2190  2201  2664  3207 
3 1532  3408  e2537  4245  2377  2834  2337  1890  2533  2451  2644  3221 
4 2097  4421  e3465  4563  1940  1895  2847  1793  2949  2211  2587  3527 
5 1593  3083  e2182  4292  2933  2416  2150  2028  3086  2286  2629  3687 
 
6 1629  2721  e3282  2734  3350  2292  2495  2186  3339  2635  2635  3067 
7 2327  2971  e7302  3359  3496  2040  1827  1872  2916  2134  2596  3432 
8 2294  1794  e5385  2272  3719  1982  2072  2023  2711  2426  2822  3592 
9 1599  2129  e4474  2788  3067  2061  1779  2255  2157  2341  2747  3049 
10 2141  e1952  e4333  2667  2975  2207  2334  2059  2827  2324  2316  3425 
 
11 1587  e1641  3017  3203  2653  2237  2290  3697  2682  2077  3853  3404 
12 2013  e1474  3077  8957  2269  2043  3190  2641  2267  2645  2639  3017 
13 1577  e1761  1921  13973  3806  1856  2089  2288  2379  2074  3423  2954 
14 1998  e1881  2426  8178  6019  2287  2850  2451  2361  2687  2685  2714 
15 1906  e1825  2305  6007  6044  1785  1860  2163  2204  2541  3043  3300 
 
16 1699  1494  1639  5137  4946  1899  2558  1704  2269  2310  2972  4358 
17 2038  1546  1918  3705  4141  1906  2322  1751  2169  2254  2604  4104 
18 1834  1894  2012  3069  2852  2423  1965  2498  2101  2644  3294  4266 
19 1385  2539  2280  2393  3306  2028  1815  4158  2286  2401  3165  3184 
20 1453  2215  1775  2814  3530  1994  1951  2418  2153  2770  5866  3384 
 
21 1543  1574  1287  2474  2989  2061  1642  3572  2223  2475  4197  3160 
22 2332  1562  1348  2460  2946  1946  4185  2703  1958  2472  3597  3576 
23 3357  1837  1920  2933  2817  1732  1825  1814  2622  2647  2692  3200 
24 2448  2299  e2195  3056  2277  2450  2503  1992  2049  2643  3111  3814 
25 2556  3236  e2073  2714  2436  2749  1869  2170  2554  2894  2893  3645 
 
26 1845  e3540  e2252  2817  2485  2368  2138  1869  2495  4915  2705  2936 
27 1768  e4531  e1453  2447  2425  2278  1785  1999  2378  3185  2450  4869 
28 1949  3409  e1595  3104  4016  2373  1610  1924  2615  3760  2918  4563 
29 2233  3784  1427  2316  ---  1984  2323  1771  2579  2395  2593  5483 
30 1939  2814  1804  2486  ---  3622  1883  1729  2448  2989  2576  4448 
 
31 1560  ---  2154  2507  ---  2952  ---  1795  ---  2967  3051  --- 

TOTAL 60591 77099 83371 120517 90242 69608 68785 68462 73772 81664 92255 108310
MEAN 1955 2570 2689 3888 3223 2245 2293 2208 2459 2634 2976 3610
MAX 3357 4531 7302 13973 6044 3622 4185 4158 3339 4915 5866 5483
MIN 1385 1474 1287 1968 1940 1732 1610 1623 1958 2074 2288 2714
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1985 - 2005, BY WATER YEAR (WY)
MEAN 3052 2893 2557 2700 2852 3049 3321 3480 3779 3922 4153 3806
MAX 5244 5244 3991 4347 4975 4791 5194 5491 6405 5426 6830 5181
(WY) 1987 1986 1988 1993 1997 1985 1992 1990 1993 1986 1987 1986
MIN 1918 1471 1604 1275 1298 1734 2035 2208 2455 2634 2917 2382
(WY) 2004 2003 2003 2003 2003 2000 2004 2005 2003 2005 2000 2004

SUMMARY STATISTICS FOR 2004 CALENDAR YEAR FOR 2005 WATER YEAR WATER YEARS 1985 - 2005
ANNUAL TOTAL 1010687  994676         
ANNUAL MEAN 2761  2725          3299         
HIGHEST ANNUAL MEAN 4113          1986
LOWEST ANNUAL MEAN 2342          2003
HIGHEST DAILY MEAN 10721      Aug 28 13973              Jan 13 17870          May 10 1990
LOWEST DAILY MEAN 1150      Feb 15 1287              Dec 21 915      A Nov 20 2001
ANNUAL SEVEN-DAY MINIMUM 1450      Feb 10 1660              Nov 11 1160          Feb 8 2003
MAXIMUM PEAK FLOW 15600      B     Jan 13 19500      C Feb 21 1997
MAXIMUM PEAK STAGE 26.16 D     Jul 28 26.43 E Feb 4 1996
INSTANTANEOUS LOW FLOW  F
10 PERCENT EXCEEDS 4390  3810          4990         
50 PERCENT EXCEEDS 2390  2450          2940         
90 PERCENT EXCEEDS 1520  1780          1870         

A - Estimated by regression.

B - Gage height, 21.10 ft.

C - Gage height, 23.95 ft.

D - Discharge, 1,801 ft3/s.

E - Discharge, 2,876 ft3/s.

F - No flow or periods of reverse flow at times in most years.


Table of Contents

Introduction

Station Descriptions

Surface-Water Data

Ground-Water Data

Meteorological Data

Biological Data