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 1994-2002.

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 COMPUTED FLOW, in CFS, WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 e2971  e2746  e3081  e1576  e3325  e1856  1934  3150  2417  2464  2887  2953 
2 e2656  e2508  e2621  e1642  e1823  e3098  3258  1839  2246  2472  3055  4019 
3 e2607  e2917  e1644  e1746  e2684  e3074  2893  2730  3250  2555  3074  2990 
4 e3928  e2397  e2206  e1724  e2313  e2536  2451  2423  7564  2640  3719  2983 
5 e6603  e2202  e2100  e1576  e1963  e2404  2261  2492  3645  2815  3009  2717 
 
6 e3584  e2290  e1822  e2062  e2058  e2642  2141  2415  3439  2486  3272  2740 
7 e3860  e1965  e2040  e1613  e2130  e3272  3447  2468  3077  2369  2889  2589 
8 e2759  e2386  e2186  e1650  e2149  e5527  4839  3682  3112  2387  2802  2643 
9 e2697  e1787  e1544  e1538  e2798  e7861  5906  4475  3195  4543  2803  2256 
10 e2601  e1773  e1977  e1605  e3374  e5505  5598  4038  4677  3160  2841  2344 
 
11 e2884  e2085  e1805  e1573  e2883  e4084  3572  7811  4268  2815  2667  2258 
12 e5061  e1681  e2219  e1410  e2873  e3098  3355  14486  3193  2794  e3271  1892 
13 e9490  e2051  e1926  e2054  e2630  e1853  3511  9388  2922  2802  e4571  2106 
14 e15238  e2975  e2753  e1800  e2380  e2714  2720  6515  3693  2747  e3511  2248 
15 e7334  e2424  e2502  e1614  e2204  e2808  2702  4502  3410  2684  e3955  1716 
 
16 e6338  e2325  e2123  e1706  e2473  e3230  e2655  5731  3428  2206  e3280  2013 
17 e4091  e1870  e2798  e1656  e1849  e2483  2591  4430  2456  2542  e3424  2236 
18 e3418  e1964  e2169  e1854  e1656  e3249  2275  3597  2517  2100  e3282  2523 
19 e3297  e1985  e2218  e1449  e2602  e2836  2280  3825  2378  2744  e3348  2986 
20 e3168  e915  e2323  e1831  e3873  e3101  4712  2807  2315  2612  e3355  2824 
 
21 e3192  e1313  e2178  e1601  e3276  e2996  4137  2863  2299  2605  e3107  2742 
22 e4424  e1350  e1692  e1889  e3325  e2839  3412  2345  2419  2366  12316  2785 
23 e2985  e1350  e2311  e1324  e3131  e3019  3046  2648  2590  2706  6662  2173 
24 e5314  e1862  e1796  e1692  e2468  e2904  2991  3186  2191  2681  4768  1806 
25 e6486  e1912  e2030  e1750  e1954  e2066  3158  3706  3046  2530  3761  1844 
 
26 e5493  e1053  e1359  e1350  e2371  e2377  2537  1926  2957  2521  3657  1958 
27 e3178  e1755  e2109  e1632  e2451  e2053  4165  2240  2594  2821  3665  1919 
28 e3744  e2244  e1763  e1650  e2050  e1943  4123  1847  2164  2858  3346  1994 
29 e3362  e2398  e1754  e1809  ---  e1804  3464  1946  2414  2630  3339  2191 
30 e3600  e3174  e1497  e1822  ---  e1866  2704  2061  2683  3144  3064  2152 
 
31 e3174  ---  e1790  e1816  ---  e2572  ---  2075  ---  2866  3306  --- 

TOTAL 139537 61657 64336 52014 71066 93670 98838 119647 92559 83665 116006 72600
MEAN 4501 2055 2075 1678 2538 3022 3295 3860 3085 2699 3742 2420
MAX 15238 3174 3081 2062 3873 7861 5906 14486 7564 4543 12316 4019
MIN 2601 915 1359 1324 1656 1804 1934 1839 2164 2100 2667 1716
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1985 - 2002, BY WATER YEAR (WY)
MEAN 3238 2966 2628 2775 2974 3170 3509 3520 3910 4002 4287 3961
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 2018 1511 1723 1612 2069 1734 2520 2370 2811 2699 2917 2420
(WY) 2000 2000 2001 2000 2000 2000 2001 1994 2001 2002 2000 2002

SUMMARY STATISTICS FOR 2001 CALENDAR YEAR FOR 2002 WATER YEAR WATER YEARS 1985 - 2002
ANNUAL TOTAL 1066471      1065595         
ANNUAL MEAN 2922      2919          3413         
HIGHEST ANNUAL MEAN 4113          1986
LOWEST ANNUAL MEAN 2563          2000
HIGHEST DAILY MEAN 15238  A     Oct 14 15238      A     Oct 14 17870          May 10 1990
LOWEST DAILY MEAN 915  A     Nov 20 915      A     Nov 20 915      A Nov 20 2001
ANNUAL SEVEN-DAY MINIMUM 1390          Nov 20 1390              Nov 20 1320          Dec 21 1999
MAXIMUM PEAK FLOW 17984      B     Aug 22 19466      C Feb 21 1997
MAXIMUM PEAK STAGE 26.21         Jul 24 26.43 E Feb 4 1996
INSTANTANEOUS LOW FLOW 0.00         F G
10 PERCENT EXCEEDS 4140      4100          5110         
50 PERCENT EXCEEDS 2530      2630          3020         
90 PERCENT EXCEEDS 1760      1750          2010         

A - Estimated by regression.

B - Measured; gage height, 21.37 ft., may have been greater during periods of missing record during Oct. or Aug. 22.

C - Gage height, 23.95 ft.

D - Discharge, 2,184 ft3/s.

E - Discharge, 2,876 ft3/s.

F - Many days.

G - 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