Provisional Monthly Streamflow Network - Tabular Data: November 2022
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Long-term monthly flows for period of record (cfs) | ||||||||
Station | Drainage area (sq. mi.) |
Years of record | Monthly mean flow (cfs) | Mean flow* | Median (50% exceedence) flow | 90% exceedence flow | 10% exceedence flow | USGS Station No. |
Rock River at Rockton |
6,363 |
84 |
4,976 |
3,860 |
3,439 |
1,397 |
6,917 |
|
Rock River near Joslin |
9,549 |
84 |
6,822 |
5,642 |
4,988 |
2,067 |
10,120 |
|
Pecatonica River at Freeport |
1,326 |
109 |
1,035 |
808 |
698 |
334 |
1,447 |
|
Green River near Geneseo |
1,003 |
88 |
252 |
466 |
350 |
82 |
1,195 |
|
Edwards River near New Boston |
445 |
88 |
45 |
170 |
87 |
19 |
447 |
|
Kankakee River at Momence |
2,294 |
111 |
1,023 |
1,636 |
1,372 |
692 |
2,978 |
|
Iroquois River near Chebanse |
2,091 |
100 |
438 |
1,016 |
540 |
96 |
2,792 |
|
Fox River at Dayton |
2,642 |
109 |
1,250 |
1,579 |
1,375 |
506 |
3,334 |
|
Vermilion River at Pontiac |
579 |
81 |
23 |
253 |
70 |
7 |
764 |
|
Spoon River at Seville |
1,636 |
109 |
126 |
624 |
330 |
64 |
1,649 |
|
LaMoine River at Ripley |
1,293 |
103 |
58 |
523 |
198 |
24 |
1,280 |
|
Bear Creek near Marcelline |
349 |
80 |
9 |
150 |
25 |
1 |
532 |
|
Mackinaw River near Congerville |
767 |
79 |
17 |
299 |
75 |
12 |
962 |
|
Salt Creek near Greenview |
1,804 |
82 |
368 |
835 |
340 |
121 |
2,405 |
|
Sangamon River at Monticello |
550 |
114 |
24 |
253 |
86 |
9 |
771 |
|
So. Fork Sangamon near Rochester |
867 |
74 |
158 |
297 |
73 |
4 |
807 |
|
Illinois River at Valley City |
26,743 |
85 |
7,122 |
15,088 |
11,530 |
5,949 |
26,580 |
|
Macoupin Creek near Kane |
868 |
96 |
75 |
325 |
89 |
9 |
847 |
|
Vermilion River near Danville |
1,290 |
102 |
164 |
637 |
313 |
53 |
1,508 |
|
Kaskaskia River at Vandalia |
1,940 |
54 |
114 |
914 |
675 |
91 |
2,774 |
|
Shoal Creek near Breese |
735 |
81 |
180 |
329 |
128 |
18 |
865 |
|
Embarras River at Ste. Marie |
1,516 |
112 |
51 |
742 |
360 |
29 |
1,817 |
|
Skillet Fork at Wayne City |
464 |
106 |
5 |
272 |
90 |
2 |
771 |
|
Little Wabash below Clay City |
1,131 |
109 |
44 |
595 |
262 |
14 |
1,760 |
|
Big Muddy at Plumfield |
794 |
53 |
46 |
390 |
159 |
42 |
1,063 |
|
Cache River at Forman |
244 |
101 |
3 |
197 |
89 |
6 |
571 |
Choose another month Station Numbers are linked to the U.S. Geological Survey, providing more information about each station. Notes: Much below normal flow = 90-100% chance of exceedence. Below normal flow = 70-90% chance of exceedence. Normal flow = 30-70% chance of exceedence. Above normal flow = 10-30% chance of exceedence. Much above normal flow = 0-10% chance of exceedence. * As reported in U.S. Geological Survey (USGS) Water Resources Data, Illinois, Water Year 2021. For best results when printing this page, change your layout to "Landscape". Streamflow Data |