Provisional Monthly Streamflow Network - Tabular Data: November 2024
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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 |
85 |
4,781 |
3,863 |
3,439 |
1,397 |
6,917 |
|
| Rock River near Joslin |
9,549 |
85 |
6,976 |
5,638 |
4,988 |
2,067 |
10,120 |
|
| Pecatonica River at Freeport |
1,326 |
110 |
1,140 |
809 |
698 |
336 |
1,380 |
|
| Green River near Geneseo |
1,003 |
88 |
225 |
461 |
340 |
82 |
1,195 |
|
| Edwards River near New Boston |
445 |
90 |
38 |
168 |
85 |
20 |
417 |
|
| Kankakee River at Momence |
2,294 |
109 |
1,147 |
1,627 |
1,318 |
704 |
2,880 |
|
| Iroquois River near Chebanse |
2,091 |
101 |
177 |
1,004 |
521 |
97 |
2,598 |
|
| Fox River at Dayton |
2,642 |
110 |
1,538 |
1,573 |
1,374 |
506 |
3,334 |
|
| Vermilion River at Pontiac |
579 |
82 |
12 |
248 |
70 |
7 |
764 |
|
| Spoon River at Seville |
1,636 |
110 |
211 |
616 |
329 |
65 |
1,585 |
|
| LaMoine River at Ripley |
1,293 |
103 |
85 |
514 |
188 |
24 |
1,280 |
|
| Bear Creek near Marcelline |
349 |
80 |
21 |
146 |
22 |
1 |
356 |
|
| Mackinaw River near Congerville |
767 |
80 |
24 |
294 |
75 |
13 |
789 |
|
| Salt Creek near Greenview |
1,804 |
83 |
369 |
825 |
346 |
121 |
2,405 |
|
| Sangamon River at Monticello |
550 |
115 |
116 |
249 |
85 |
9 |
771 |
|
| So. Fork Sangamon near Rochester |
867 |
75 |
691 |
291 |
73 |
4 |
807 |
|
| Illinois River at Valley City |
26,743 |
86 |
9,330 |
15,176 |
11,525 |
5,949 |
34,520 |
|
| Macoupin Creek near Kane |
868 |
96 |
617 |
319 |
89 |
8 |
847 |
|
| Vermilion River near Danville |
1,290 |
103 |
567 |
627 |
301 |
53 |
1,508 |
|
| Kaskaskia River at Vandalia |
1,940 |
55 |
412 |
884 |
655 |
76 |
2,774 |
|
| Shoal Creek near Breese |
735 |
83 |
1,215 |
324 |
128 |
18 |
865 |
|
| Embarras River at Ste. Marie |
1,516 |
113 |
103 |
730 |
332 |
29 |
1,817 |
|
| Skillet Fork at Wayne City |
464 |
108 |
272 |
267 |
89 |
2 |
771 |
|
| Little Wabash below Clay City |
1,131 |
110 |
293 |
584 |
261 |
14 |
1,630 |
|
| Big Muddy at Plumfield |
794 |
54 |
104 |
378 |
148 |
42 |
1,063 |
|
| Cache River at Forman |
244 |
102 |
58 |
193 |
84 |
4 |
571 |
|
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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 2023. For best results when printing this page, change your layout to "Landscape". Streamflow Data |