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 2002 TO SEPTEMBER 2003
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
 
1 2003  1414  e1243  e1611  1661  1244  1512  e9531  2755  2229  3738  4695 
2 3065  1429  e1291  e1181  1436  1212  1378  3826  2657  2351  3378  3068 
3 2237  1582  1668  e1340  1481  1259  2258  3784  2185  2404  6043  3008 
4 4393  1167  e1330  e1422  1661  1294  5593  6171  2318  2393  3535  2743 
5 2984  1660  1396  e1430  1396  1553  5209  5743  2430  3779  4033  2645 
 
6 2867  1506  1375  e1452  1178  1226  3828  4653  2694  4530  3811  2438 
7 2406  1288  1378  e1201  1510  1575  2950  3633  1950  4807  3471  2129 
8 1860  1295  1310  e1224  1207  1766  3254  4585  3834  4956  3663  2332 
9 2098  1401  1360  e1512  1009  1902  3019  10069  1796  4042  3526  2373 
10 1884  1694  1321  e1208  1226  1666  2550  7289  2410  3009  3294  2410 
 
11 2148  1346  1352  e1236  1177  1801  2125  5988  2451  3087  3740  2449 
12 1986  1608  1350  e1361  1221  1348  2127  4004  2472  3093  3763  2699 
13 2201  1400  1483  e1145  1114  2145  2088  3992  2202  2694  3391  2307 
14 1462  1483  1363  1131  1150  2202  2117  4852  2376  2411  3263  3709 
15 1667  1782  1161  1402  1374  1971  1645  2784  2480  5715  3261  2838 
 
16 1917  1715  1403  1258  1261  1625  1664  3176  2403  4436  3494  2566 
17 1565  1548  1470  e1264  1174  1603  e1553  2977  2358  6090  3407  2373 
18 1808  1536  4761  1144  1263  1559  e1245  2647  4625  6098  3047  2404 
19 1645  1528  2734  1219  1270  2258  e2048  3598  1964  4602  2648  2547 
20 1548  1597  2161  1112  1215  2211  e1356  3292  2510  5505  3005  2156 
 
21 1675  1496  2105  1121  1467  2016  e1430  2466  2682  4705  3297  2692 
22 1602  1787  1935  1184  1237  2394  e1687  1948  2260  6001  2916  2822 
23 1376  1367  1528  1339  1271  1530  e1275  2165  2534  4366  2918  2642 
24 1253  1355  1255  1351  1378  1678  e1467  2206  2327  3354  3283  1971 
25 1926  1272  1756  1221  1213  1628  e1217  1519  2941  3309  2977  2235 
 
26 1680  1614  1246  1114  1236  1852  e1525  2029  1725  2774  2825  3034 
27 1428  e1176  1233  1254  1287  1793  e1489  1550  2311  5458  2951  3022 
28 1411  e1456  1534  1160  1284  2080  e1315  3329  2104  5641  3419  2888 
29 1301  e1425  e1127  1431  ---  1855  e1197  1553  1618  3664  2422  2446 
30 1254  e1216  e1630  1172  ---  1988  e5402  3048  2272  3740  2958  1492 
 
31 1409  ---  e1474  1325  ---  1708  ---  2773  ---  3612  3344  --- 

TOTAL 60059 44143 49733 39525 36357 53942 67523 121180 73644 124855 104821 79133
MEAN 1937 1471 1604 1275 1298 1740 2251 3909 2455 4028 3381 2638
MAX 4393 1787 4761 1611 1661 2394 5593 10069 4625 6098 6043 4695
MIN 1253 1167 1127 1112 1009 1212 1197 1519 1618 2229 2422 1492
e Estimated
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1985 - 2003, BY WATER YEAR (WY)
MEAN 3169 2887 2574 2696 2886 3094 3443 3541 3833 4003 4240 3892
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 1937 1471 1604 1275 1298 1734 2251 2370 2455 2699 2917 2420
(WY) 2003 2003 2003 2003 2003 2000 2003 1994 2003 2002 2000 2002

SUMMARY STATISTICS FOR 2002 CALENDAR YEAR FOR 2003 WATER YEAR WATER YEARS 1985 - 2003
ANNUAL TOTAL 954000      854915         
ANNUAL MEAN 2614      2342          3357         
HIGHEST ANNUAL MEAN 4113          1986
LOWEST ANNUAL MEAN 2342          2003
HIGHEST DAILY MEAN 14486          May 12 10069              May 9 17870          May 10 1990
LOWEST DAILY MEAN 1127  A     Dec 29 1009              Feb 9 915      A Nov 20 2001
ANNUAL SEVEN-DAY MINIMUM 1340          Dec 9 1160              Feb 8 1160          Feb 8 2003
MAXIMUM PEAK FLOW 13407      B     Jul 15 19466      C Feb 21 1997
MAXIMUM PEAK STAGE 26.13 D     Jul 15 26.43 E Feb 4 1996
INSTANTANEOUS LOW FLOW 0.00         Feb 4 F
10 PERCENT EXCEEDS 3710      3830          5070         
50 PERCENT EXCEEDS 2420      1950          2980         
90 PERCENT EXCEEDS 1410      1230          1930         

A - Estimated by regression.

B - Gage height, 21.73 ft.

C - Gage height, 23.95 ft.

D - Discharge, 363 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