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
DAYOCTNOVDECJANFEBMARAPRMAYJUNJULAUGSEP
 
12003 1414 e1243 e1611 1661 1244 1512 e9531 2755 2229 3738 4695 
23065 1429 e1291 e1181 1436 1212 1378 3826 2657 2351 3378 3068 
32237 1582 1668 e1340 1481 1259 2258 3784 2185 2404 6043 3008 
44393 1167 e1330 e1422 1661 1294 5593 6171 2318 2393 3535 2743 
52984 1660 1396 e1430 1396 1553 5209 5743 2430 3779 4033 2645 
 
62867 1506 1375 e1452 1178 1226 3828 4653 2694 4530 3811 2438 
72406 1288 1378 e1201 1510 1575 2950 3633 1950 4807 3471 2129 
81860 1295 1310 e1224 1207 1766 3254 4585 3834 4956 3663 2332 
92098 1401 1360 e1512 1009 1902 3019 10069 1796 4042 3526 2373 
101884 1694 1321 e1208 1226 1666 2550 7289 2410 3009 3294 2410 
 
112148 1346 1352 e1236 1177 1801 2125 5988 2451 3087 3740 2449 
121986 1608 1350 e1361 1221 1348 2127 4004 2472 3093 3763 2699 
132201 1400 1483 e1145 1114 2145 2088 3992 2202 2694 3391 2307 
141462 1483 1363 1131 1150 2202 2117 4852 2376 2411 3263 3709 
151667 1782 1161 1402 1374 1971 1645 2784 2480 5715 3261 2838 
 
161917 1715 1403 1258 1261 1625 1664 3176 2403 4436 3494 2566 
171565 1548 1470 e1264 1174 1603 e1553 2977 2358 6090 3407 2373 
181808 1536 4761 1144 1263 1559 e1245 2647 4625 6098 3047 2404 
191645 1528 2734 1219 1270 2258 e2048 3598 1964 4602 2648 2547 
201548 1597 2161 1112 1215 2211 e1356 3292 2510 5505 3005 2156 
 
211675 1496 2105 1121 1467 2016 e1430 2466 2682 4705 3297 2692 
221602 1787 1935 1184 1237 2394 e1687 1948 2260 6001 2916 2822 
231376 1367 1528 1339 1271 1530 e1275 2165 2534 4366 2918 2642 
241253 1355 1255 1351 1378 1678 e1467 2206 2327 3354 3283 1971 
251926 1272 1756 1221 1213 1628 e1217 1519 2941 3309 2977 2235 
 
261680 1614 1246 1114 1236 1852 e1525 2029 1725 2774 2825 3034 
271428 e1176 1233 1254 1287 1793 e1489 1550 2311 5458 2951 3022 
281411 e1456 1534 1160 1284 2080 e1315 3329 2104 5641 3419 2888 
291301 e1425 e1127 1431 --- 1855 e1197 1553 1618 3664 2422 2446 
301254 e1216 e1630 1172 --- 1988 e5402 3048 2272 3740 2958 1492 
 
311409 --- e1474 1325 --- 1708 --- 2773 --- 3612 3344 --- 

TOTAL600594414349733395253635753942675231211807364412485510482179133
MEAN193714711604127512981740225139092455402833812638
MAX4393178747611611166123945593100694625609860434695
MIN125311671127111210091212119715191618222924221492

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1985 - 2003, BY WATER YEAR (WY)
MEAN316928872574269628863094344335413833400342403892
MAX524452433991434749754789519454936405542668305182
(WY)198719861988199319971985199219901993198619871986
MIN193714711604127512981734225123702455269929172420
(WY)200320032003200320032000200319942003200220002002

SUMMARY STATISTICSFOR 2002 CALENDAR YEARFOR 2003 WATER YEARWATER YEARS 1985 - 2003
ANNUAL TOTAL954000     854915         
ANNUAL MEAN2614     2342         3357         
HIGHEST ANNUAL MEAN4113         1986
LOWEST ANNUAL MEAN2342         2003
HIGHEST DAILY MEAN14486         May 1210069             May 917870         May 10 1990
LOWEST DAILY MEAN1127  A    Dec 291009             Feb 9915      ANov 20 2001
ANNUAL SEVEN-DAY MINIMUM1340         Dec 91160             Feb 81160         Feb 8 2003
MAXIMUM PEAK FLOW13407      B    Jul 1519466      CFeb 21 1997
MAXIMUM PEAK STAGE26.13 D    Jul 1526.43 EFeb 4 1996
INSTANTANEOUS LOW FLOW0.00        Feb 4F
10 PERCENT EXCEEDS3710     3830         5070         
50 PERCENT EXCEEDS2420     1950         2980         
90 PERCENT EXCEEDS1410     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