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Provisional Mean Flows for June 2009 Choose another month
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Long-term
monthly flows for period of record (cfs) |
| Station No. |
Station |
Drainage area
(sq. mi.) |
Years of record |
Monthly
mean flow (cfs) |
Mean flow* |
Median (50% exceedence) flow |
90% exceedence flow |
10% exceedence flow |
|
5437500
|
Rock River at Rockton [graph]
|
6,363
|
73
|
7,715
|
4,684
|
4,076
|
1,712
|
8,870
|
|
5446500
|
Rock River near Joslin [graph]
|
9,549
|
65
|
15,280
|
7,733
|
6,741
|
2,848
|
16,493
|
|
5435500
|
Pecatonica River at Freeport [graph]
|
1,326
|
89
|
1,375
|
1,045
|
899
|
357
|
1,835
|
|
5447500
|
Green River near Geneseo [graph]
|
1,003
|
69
|
1,390
|
903
|
758
|
225
|
1,645
|
|
5466500
|
Edwards River near New Boston [graph]
|
445
|
70
|
878
|
440
|
335
|
60
|
916
|
|
5520500
|
Kankakee River at Momence [graph]
|
2,294
|
90
|
3,054
|
2,198
|
1,985
|
1,002
|
3,631
|
|
5526000
|
Iroquois River near Chebanse [graph]
|
2,091
|
84
|
2,418
|
2,042
|
1,507
|
326
|
4,733
|
|
5552500
|
Fox River at Dayton [graph]
|
2,642
|
88
|
4,174
|
1,986
|
1,590
|
566
|
3,698
|
|
5554500
|
Vermilion River at Pontiac [graph]
|
579
|
64
|
800
|
556
|
396
|
96
|
1,220
|
|
5570000
|
Spoon River at Seville [graph]
|
1,636
|
91
|
3,256
|
1,594
|
1,069
|
284
|
3,511
|
|
5585000
|
LaMoine River at Ripley [graph]
|
1,293
|
84
|
1,691
|
1,138
|
757
|
95
|
2,817
|
|
5495500
|
Bear Creek near Marcelline [graph]
|
349
|
63
|
307
|
275
|
111
|
6
|
795
|
|
5567500
|
Mackinaw River near Congerville [graph]
|
767
|
59
|
903
|
750
|
445
|
75
|
1,647
|
|
5582000
|
Salt Creek near Greenview [graph]
|
1,804
|
66
|
2,920
|
1,832
|
1,410
|
486
|
3,479
|
|
5572000
|
Sangamon River at Monticello [graph]
|
550
|
95
|
525
|
504
|
358
|
83
|
1,013
|
|
5576000
|
So. Fork Sangamon near Rochester [graph]
|
867
|
58
|
1,327
|
848
|
525
|
107
|
2,097
|
|
5586100
|
Illinois River at Valley City [graph]
|
26,743
|
69
|
56,000
|
29,830
|
25,620
|
10,482
|
55,470
|
|
5587000
|
Macoupin Creek near Kane [graph]
|
868
|
79
|
905
|
556
|
286
|
51
|
1,229
|
|
3339000
|
Vermilion River near Danville [graph]
|
1,290
|
86
|
1,420
|
1,235
|
999
|
229
|
2,708
|
|
5592500
|
Kaskaskia River at Vandalia [graph]
|
1,940
|
38
|
2,933
|
1,654
|
1,257
|
108
|
3,721
|
|
5594000
|
Shoal Creek near Breese [graph]
|
735
|
64
|
827
|
511
|
296
|
59
|
1,303
|
|
3345500
|
Embarras River at Ste. Marie [graph]
|
1,516
|
94
|
3,013
|
1,272
|
927
|
212
|
2,737
|
|
3380500
|
Skillet Fork at Wayne City [graph]
|
464
|
88
|
1,002
|
301
|
122
|
11
|
798
|
|
3379500
|
Little Wabash below Clay City [graph]
|
1,131
|
93
|
1,524
|
802
|
457
|
55
|
2,073
|
|
5597000
|
Big Muddy at Plumfield [graph]
|
794
|
37
|
1,283
|
734
|
565
|
167
|
1,687
|
|
3612000
|
Cache River at Forman [graph]
|
244
|
84
|
264
|
212
|
96
|
9
|
441
|
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 2007.
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