Station list     Available data
ILLINOIS RIVER BASIN


05536995       CHICAGO SANITARY AND SHIP CANAL AT ROMEOVILLE, IL

 

LOCATION.-- Lat 41°38'27", long 88°03'35" (NAD of 1927), 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.-- Acoustical flowmeter and phone telemeter. Datum of gage is 551.89 ft above NGVD of 1929 (U.S. Army Corps of Engineers bench mark).
 

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 2003 TO SEPTEMBER 2004
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 1732  1531  2153  1799  1930  2241  3029  2005  6562  2836  3010  3157 
2 1430  4284  1442  1393  1539  2182  2685  2119  3334  2673  2885  2863 
3 2057  4760  1408  1377  1955  2485  2277  1722  4208  5933  3860  2806 
4 1435  5154  2090  1415  1481  4505  1918  1575  2864  4927  5677  2723 
5 1559  5878  2805  1895  1172  8992  1876  1889  4305  4566  4968  2624 
 
6 1547  3883  2776  2486  2123  5352  2328  1894  3366  4061  3400  2396 
7 1666  3338  2753  1569  1381  5018  1539  1795  3269  3707  4233  1900 
8 1586  1943  2133  1295  2154  3023  1685  1909  3017  3852  3775  2306 
9 1628  2963  3346  1287  1741  3089  1730  1748  2996  5048  2791  2121 
10 1559  2091  4159  1330  1156  3256  1667  2139  5605  4106  3492  2522 
 
11 2478  1368  3672  1793  1444  2117  1446  1477  7632  4370  2816  2339 
12 1576  2136  2940  1481  1439  2097  1771  3080  8877  2741  3157  1969 
13 1766  1440  2494  1791  1950  2313  1453  4652  4866  4090  3228  2461 
14 4212  1958  2332  1236  1332  2578  1665  6990  6078  2798  3166  2184 
15 2299  1339  1922  1672  1150  1859  1447  4371  4511  3485  3013  3733 
 
16 2415  1365  2105  1616  1651  1637  1842  3519  4994  3612  3146  2823 
17 1950  3187  1669  1545  1378  1855  2370  3894  2845  3042  3491  2804 
18 2057  10200  2005  1905  1900  2411  1773  3068  4358  3544  2372  2208 
19 2064  5818  1443  1574  1322  1953  e1700  3378  3209  3206  2693  2350 
20 2196  5016  1690  1354  2937  2069  e3294  4115  3687  3249  3051  2039 
 
21 1691  3484  2134  1762  2496  1712  2013  e4576  3750  4103  3200  1889 
22 1616  3140  1349  1273  2700  1873  1869  e6457  3511  4377  2439  1840 
23 1660  4153  1303  1709  2531  1870  2688  e6626  3513  3353  2858  2297 
24 2500  4030  1513  1710  2474  2482  2382  e4541  3239  3840  4106  1903 
25 2107  3894  1724  1924  2104  2710  2470  3601  2462  3049  3579  1703 
 
26 2371  2009  1653  1499  2574  2897  2199  3551  3163  3247  2380  1837 
27 1883  2751  1492  1758  1802  3038  1743  3062  3175  3608  4301  1932 
28 1707  2192  1774  1476  2223  3589  2225  2875  2592  3328  10721  1983 
29 1362  2671  1873  1470  1940  3975  1751  3054  2785  3128  4695  3314 
30 1547  1958  1442  1343  ---  4468  2225  7486  3038  3020  4106  2426 
 
31 1813  ---  1566  1580  ---  3048  ---  8485  ---  2729  3423  --- 

TOTAL 59469 99934 65160 49317 53979 92694 61060 111653 121811 113628 114032 71452
MEAN 1918 3331 2102 1591 1861 2990 2035 3602 4060 3665 3678 2382
MAX 4212 10200 4159 2486 2937 8992 3294 8485 8877 5933 10721 3733
MIN 1362 1339 1303 1236 1150 1637 1446 1477 2462 2673 2372 1703
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1985 - 2004, BY WATER YEAR (WY)
MEAN 3107 2909 2550 2641 2834 3089 3372 3544 3845 3986 4212 3816
MAX 5244 5243 3991 4347 4975 4789 5194 5493 6405 5426 6830 5182
(WY) 1987 1986 1988 1993 1997 1985 1992 1990 1993 1986 1987 1986
MIN 1918 1471 1604 1275 1298 1734 2035 2370 2455 2699 2917 2382
(WY) 2004 2003 2003 2003 2003 2000 2004 1994 2003 2002 2000 2004

SUMMARY STATISTICS FOR 2003 CALENDAR YEAR FOR 2004 WATER YEAR WATER YEARS 1985 - 2004
ANNUAL TOTAL 925543  1014189         
ANNUAL MEAN 2536  2771          3327         
HIGHEST ANNUAL MEAN 4113          1986
LOWEST ANNUAL MEAN 2342          2003
HIGHEST DAILY MEAN 10200      Nov 18 10721              Aug 28 17870          May 10 1990
LOWEST DAILY MEAN 1009      Feb 9 1150              Feb 15 915      A Nov 20 2001
ANNUAL SEVEN-DAY MINIMUM 1160      Feb 8 1450              Feb 10 1160          Feb 8 2003
MAXIMUM PEAK FLOW 14643      B     Aug 28 19466      C Feb 21 1997
MAXIMUM PEAK STAGE 26.16 D     Mar 29 26.43 E Feb 4 1996
INSTANTANEOUS LOW FLOW 38              Jan 8  F
10 PERCENT EXCEEDS 4240  4370          5020         
50 PERCENT EXCEEDS 2200  2390          2960         
90 PERCENT EXCEEDS 1260  1470          1880         

A - Estimated by regression.

B - Gage height, 21.38 ft.

C - Gage height, 23.95 ft.

D - Discharge, 3,515 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