Flow report
Illinois River Levels & Streamflow
As of Aug 14, 2026, Illinois rivers are running at 89% of normal across 153 USGS gauges — the highest is 143,000 cfs on the Mississippi River At Thebes. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Illinois.
USGS gauges
153
State percent normal
89%
Paddle runs
0
Updated
Aug 14
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Every USGS streamgauge filtered to Illinois.
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August
14
2026
Flow briefing
Streamflow levels across Illinois are currently 89% of normal, with the Mississippi River At Thebes reporting the highest discharge in the state at 143,000 cfs and a gauge stage of 12.94 ft.
Meanwhile, the Pope Creek Near Keithsburg is seeing a spike today — up 3321% since yesterday and currently running near peak.
Tap any gauge below for the full hydrograph, paired weather forecast, and historical context. Use the rivers panel to jump into Illinois's named rivers.
River levels near Illinois towns
Active weather warnings for Illinois
# Illinois Storm Center Natural Disaster Report
Illinois is experiencing a severe flooding crisis on August 14th with multiple Flash Flood Warnings and Flood Warnings issued across the state. Life-threatening flash flooding is ongoing in Vermilion County affecting Danville, Hoopestown, and areas along Interstate 74, with 3-6 inches of rainfall reported. Additional Flash Flood Warnings extend through east-central Illinois including Charleston, Mattoon, and Paris, with 1-3 inches of rain already fallen and up to 2 additional inches possible. The Wabash River at Hutsonville and Riverton is forecasted to experience minor flooding through August 22nd, while the Kankakee River and Thorn Creek near Chicago will see flooding through Saturday. A Heat Advisory is also in effect until Sunday evening with heat index values of 105-110 degrees across central and east-central Illinois. Residents should avoid flooded roadways, monitor conditions closely, and prepare for prolonged impacts as additional rainfall is forecasted.
Illinois is experiencing a severe flooding crisis on August 14th with multiple Flash Flood Warnings and Flood Warnings issued across the state. Life-threatening flash flooding is ongoing in Vermilion County affecting Danville, Hoopestown, and areas along Interstate 74, with 3-6 inches of rainfall reported. Additional Flash Flood Warnings extend through east-central Illinois including Charleston, Mattoon, and Paris, with 1-3 inches of rain already fallen and up to 2 additional inches possible. The Wabash River at Hutsonville and Riverton is forecasted to experience minor flooding through August 22nd, while the Kankakee River and Thorn Creek near Chicago will see flooding through Saturday. A Heat Advisory is also in effect until Sunday evening with heat index values of 105-110 degrees across central and east-central Illinois. Residents should avoid flooded roadways, monitor conditions closely, and prepare for prolonged impacts as additional rainfall is forecasted.
Illinois at a glance
State-wide streamflow overview
The Illinois flow picture in four data points -- where the state sits versus historical norms, what's flowing hardest, and what's spiking fastest.
Percent of normal
89%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Mississippi River At Thebes
143,000 cfs
Gauge stage 12.94 ft
Biggest 24h spike
Pope Creek Near Keithsburg
+3321%
Now 691 cfs
Network coverage
Gauges + rivers tracked
153 + 0
USGS gauges feeding 0 named rivers in Illinois.
Full streamgauge inventory
Illinois USGS streamgauges
Every USGS gauge Snoflo tracks in Illinois. Sortable, quickly filterable. Numeric columns heat-mapped from light to deep. Tap any gauge for its full hydrograph and forecast.
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
Mississippi River At Thebes, Il
20 hours ago · USGS 07022000 |
145,000 cfs | 13.25 ft | · | 79°F | 321 ft | Upper Mississippi-Cape Girardeau |
|
Mississippi River At Chester, Il
20 hours ago · USGS 07020500 |
144,000 cfs | 9.00 ft | · | 79°F | 358 ft | Upper Mississippi-Cape Girardeau |
|
Illinois River At Kingston Mines, Il
21 hours ago · USGS 05568500 |
27,300 cfs | 9.75 ft | · | 71°F | 441 ft | Lower Illinois-Lake Chautauqua |
|
Illinois River At Henry, Il
21 hours ago · USGS 05558300 |
26,500 cfs | 17.15 ft | 78°F | 71°F | 440 ft | Lower Illinois-Senachwine Lake |
|
Illinois River At Marseilles, Il
21 hours ago · USGS 05543500 |
25,500 cfs | 15.83 ft | · | 70°F | 459 ft | Upper Illinois |
|
Illinois River At Valley City, Il
21 hours ago · USGS 05586100 |
15,800 cfs | 4.73 ft | · | 73°F | 433 ft | Lower Illinois |
|
Wabash River At Mt. Carmel, Il
20 hours ago · USGS 03377500 |
12,500 cfs | 4.90 ft | · | 75°F | 391 ft | Lower Wabash |
|
Kankakee River Near Wilmington, Il
21 hours ago · USGS 05527500 |
8,830 cfs | 3.09 ft | 71°F | 70°F | 511 ft | Kankakee |
|
Rock River Near Joslin, Il
21 hours ago · USGS 05446500 |
6,000 cfs | 6.49 ft | 34°F | 71°F | 588 ft | Lower Rock |
|
Rock River At Como, Il
21 hours ago · USGS 05443500 |
5,880 cfs | 4.62 ft | · | 69°F | 618 ft | Lower Rock |
|
Rock River At Byron, Il
22 hours ago · USGS 05440700 |
4,720 cfs | 6.29 ft | 76°F | 68°F | 677 ft | Lower Rock |
|
Fox River At Dayton, Il
21 hours ago · USGS 05552500 |
4,540 cfs | 8.71 ft | · | 70°F | 472 ft | Lower Fox |
|
Rock River At Rockton, Il
22 hours ago · USGS 05437500 |
4,140 cfs | 4.44 ft | · | 65°F | 712 ft | Lower Rock |
|
Kankakee River At Momence, Il
21 hours ago · USGS 05520500 |
3,740 cfs | 3.24 ft | · | 69°F | 610 ft | Kankakee |
|
Edwards River Near New Boston, Il
22 hours ago · USGS 05466500 |
2,520 cfs | 21.19 ft | · | 72°F | 561 ft | Flint-Henderson |
|
Fox River At Montgomery, Il
22 hours ago · USGS 05551540 |
2,140 cfs | 12.07 ft | · | 69°F | 613 ft | Lower Fox |
|
Fox River At South Elgin, Il
21 hours ago · USGS 05551000 |
1,940 cfs | 13.05 ft | · | 68°F | 696 ft | Lower Fox |
|
Fox River At Algonquin (Tailwater), Il
22 hours ago · USGS 05550001 |
1,700 cfs | 7.03 ft | 32°F | 67°F | 727 ft | Upper Fox |
|
Henderson Creek Near Oquawka, Il
22 hours ago · USGS 05469000 |
1,580 cfs | 20.56 ft | · | 72°F | 611 ft | Flint-Henderson |
|
Pecatonica River Nr Shirland, Il
21 hours ago · USGS 05437050 |
1,540 cfs | 4.98 ft | · | 66°F | 718 ft | Pecatonica |
|
Pope Creek Near Keithsburg, Il
22 hours ago · USGS 05467000 |
1,530 cfs | 27.38 ft | · | 72°F | 550 ft | Flint-Henderson |
|
Des Plaines River At Riverside, Il
21 hours ago · USGS 05532500 |
1,470 cfs | 4.05 ft | · | 70°F | 598 ft | Des Plaines |
|
Iroquois River Near Chebanse, Il
21 hours ago · USGS 05526000 |
1,460 cfs | 5.09 ft | · | 70°F | 600 ft | Iroquois |
|
Du Page River At Shorewood, Il
21 hours ago · USGS 05540500 |
1,460 cfs | 12.23 ft | · | 70°F | 566 ft | Des Plaines |
|
Vermilion River Near Leonore, Il
21 hours ago · USGS 05555300 |
1,380 cfs | 6.27 ft | 76°F | 70°F | 535 ft | Vermilion |
|
Mazon River Near Coal City, Il
21 hours ago · USGS 05542000 |
1,350 cfs | 4.50 ft | · | 70°F | 529 ft | Upper Illinois |
|
Little Calumet River At South Holland, Il
21 hours ago · USGS 05536290 |
1,280 cfs | 12.06 ft | · | 70°F | 596 ft | Chicago |
|
Kaskaskia River At Vandalia, Il
21 hours ago · USGS 05592500 |
1,260 cfs | 7.10 ft | · | 74°F | 537 ft | Middle Kaskaskia |
|
Kaskaskia River Near Venedy Station, Il
21 hours ago · USGS 05594100 |
1,180 cfs | 5.21 ft | · | 76°F | 395 ft | Lower Kaskaskia |
|
Thorn Creek At Thornton, Il
21 hours ago · USGS 05536275 |
1,140 cfs | 7.77 ft | · | 69°F | 603 ft | Chicago |
|
Vermilion River Near Danville, Il
21 hours ago · USGS 03339000 |
1,080 cfs | 4.67 ft | 64°F | 70°F | 517 ft | Vermilion |
|
Kaskaskia River At New Athens, Il
22 hours ago · USGS 05595000 |
1,040 cfs | 68.75 ft | 73°F | 75°F | 403 ft | Lower Kaskaskia |
|
Kaskaskia River Near Cowden, Il
21 hours ago · USGS 05592100 |
1,030 cfs | 6.27 ft | · | 73°F | 553 ft | Upper Kaskaskia |
|
Des Plaines River Near Des Plaines, Il
21 hours ago · USGS 05529000 |
1,020 cfs | 11.72 ft | · | 68°F | 625 ft | Des Plaines |
|
Kaskaskia River At Shelbyville, Il
21 hours ago · USGS 05592000 |
918 cfs | 9.16 ft | · | 72°F | 568 ft | Upper Kaskaskia |
|
Spoon River At London Mills, Il
21 hours ago · USGS 05569500 |
889 cfs | 4.92 ft | 77°F | 70°F | 557 ft | Spoon |
|
Pecatonica River At Freeport, Il
22 hours ago · USGS 05435500 |
863 cfs | 4.83 ft | · | 68°F | 754 ft | Pecatonica |
|
Kaskaskia River At Carlyle, Il
21 hours ago · USGS 05593000 |
834 cfs | 8.30 ft | · | 75°F | 413 ft | Middle Kaskaskia |
|
Green River Near Geneseo, Il
22 hours ago · USGS 05447500 |
732 cfs | 4.54 ft | 58°F | 68°F | 586 ft | Green |
|
Iroquois River At Iroquois, Il
21 hours ago · USGS 05525000 |
727 cfs | 9.22 ft | · | 70°F | 638 ft | Iroquois |
|
Sangamon River Near Oakford, Il
21 hours ago · USGS 05583000 |
694 cfs | 3.75 ft | 81°F | 72°F | 457 ft | Lower Sangamon |
|
Indian Creek Near Wyoming, Il
22 hours ago · USGS 05568800 |
659 cfs | 15.35 ft | · | 70°F | 623 ft | Spoon |
|
Spoon River At Seville, Il
21 hours ago · USGS 05570000 |
631 cfs | 6.84 ft | 53°F | 71°F | 498 ft | Spoon |
|
Hickory Creek At Joliet, Il
22 hours ago · USGS 05539000 |
627 cfs | 13.09 ft | · | 70°F | 535 ft | Des Plaines |
|
Des Plaines River Near Gurnee, Il
22 hours ago · USGS 05528000 |
524 cfs | 4.82 ft | · | 68°F | 664 ft | Des Plaines |
|
Mackinaw River Near Green Valley, Il
21 hours ago · USGS 05568000 |
501 cfs | 14.37 ft | 75°F | 71°F | 501 ft | Mackinaw |
|
Kishwaukee River Near Perryville, Il
22 hours ago · USGS 05440000 |
488 cfs | 5.94 ft | · | 67°F | 701 ft | Kishwaukee |
|
West Branch Du Page River Near Naperville, Il
22 hours ago · USGS 05540130 |
421 cfs | 5.43 ft | · | 69°F | 637 ft | Des Plaines |
|
Little Wabash River At Carmi, Il
22 hours ago · USGS 03381500 |
417 cfs | 3.83 ft | · | 78°F | 419 ft | Little Wabash |
|
Big Bureau Creek At Princeton, Il
21 hours ago · USGS 05556500 |
415 cfs | 3.48 ft | · | 68°F | 603 ft | Lower Illinois-Senachwine Lake |
|
Thorn Creek At Glenwood, Il
22 hours ago · USGS 05536215 |
393 cfs | 4.92 ft | · | 69°F | 628 ft | Chicago |
|
Boneyard Creek At Lincoln Ave At Urbana, Il
21 hours ago · USGS 03337100 |
382 cfs | 11.47 ft | · | 70°F | 714 ft | Vermilion |
|
Butterfield Creek At Flossmoor, Il
22 hours ago · USGS 05536255 |
360 cfs | 7.97 ft | · | 69°F | 635 ft | Chicago |
|
Mackinaw River Near Congerville, Il
21 hours ago · USGS 05567500 |
356 cfs | 2.08 ft | 47°F | 71°F | 611 ft | Mackinaw |
|
Salt Creek Near Greenview, Il
21 hours ago · USGS 05582000 |
335 cfs | 1.63 ft | 83°F | 72°F | 481 ft | Salt |
|
Sugar Creek Near Bloomington, Il
22 hours ago · USGS 05580950 |
325 cfs | 2.27 ft | · | 71°F | 749 ft | Salt |
|
North Branch Chicago River At Niles, Il
22 hours ago · USGS 05536000 |
306 cfs | 3.07 ft | · | 70°F | 608 ft | Chicago |
|
East Branch Du Page River At Bolingbrook, Il
22 hours ago · USGS 05540250 |
301 cfs | 16.60 ft | · | 69°F | 640 ft | Des Plaines |
|
Salt Creek At Western Springs, Il
21 hours ago · USGS 05531500 |
297 cfs | 3.11 ft | · | 70°F | 634 ft | Des Plaines |
|
Embarras River At Lawrenceville, Il
21 hours ago · USGS 03346500 |
294 cfs | 17.13 ft | 61°F | 74°F | 424 ft | Embarras |
|
Des Plaines River At Russell, Il
22 hours ago · USGS 05527800 |
290 cfs | 6.48 ft | · | 67°F | 667 ft | Des Plaines |
|
West Br Du Page River Near Warrenville, Il
22 hours ago · USGS 05540095 |
253 cfs | 8.62 ft | · | 69°F | 688 ft | Des Plaines |
|
Deer Creek Near Chicago Heights, Il
21 hours ago · USGS 05536235 |
233 cfs | 8.60 ft | · | 69°F | 628 ft | Chicago |
|
Kishwaukee River At Belvidere, Il
22 hours ago · USGS 05438500 |
224 cfs | 1.55 ft | · | 66°F | 740 ft | Kishwaukee |
|
Sangamon River At Petersburg, Il
22 hours ago · USGS 05578000 |
213 cfs | 4.60 ft | 79°F | 72°F | 489 ft | Lower Sangamon |
|
Salt Fork Near St. Joseph, Il
21 hours ago · USGS 03336900 |
211 cfs | 5.16 ft | · | 70°F | 661 ft | Vermilion |
|
Blackberry Creek Near Yorkville, Il
22 hours ago · USGS 05551700 |
172 cfs | 5.08 ft | · | 69°F | 617 ft | Lower Fox |
|
Sugar Creek At Milford, Il
22 hours ago · USGS 05525500 |
168 cfs | 4.48 ft | · | 70°F | 644 ft | Iroquois |
|
Salt Creek At Elmhurst, Il
22 hours ago · USGS 05531300 |
160 cfs | 6.03 ft | · | 69°F | 670 ft | Des Plaines |
|
Blackberry Creek Near Montgomery, Il
22 hours ago · USGS 05551675 |
158 cfs | 5.02 ft | · | 69°F | 661 ft | Lower Fox |
|
Embarras River At Ste. Marie, Il
21 hours ago · USGS 03345500 |
155 cfs | 1.37 ft | · | 74°F | 499 ft | Embarras |
|
Sangamon River At Riverton, Il
21 hours ago · USGS 05576500 |
153 cfs | 2.64 ft | · | 72°F | 519 ft | Lower Sangamon |
|
Vermilion River At Pontiac, Il
21 hours ago · USGS 05554500 |
151 cfs | 3.45 ft | 77°F | 71°F | 661 ft | Vermilion |
|
Midlothian Creek At Oak Forest, Il
22 hours ago · USGS 05536340 |
147 cfs | 3.22 ft | · | 70°F | 629 ft | Chicago |
|
Big Muddy River At Rte 127 At Murphysboro, Il
22 hours ago · USGS 05599490 |
143 cfs | 3.65 ft | 88°F | 76°F | 357 ft | Big Muddy |
|
Nippersink Creek Near Spring Grove, Il
21 hours ago · USGS 05548280 |
137 cfs | 4.49 ft | · | 66°F | 754 ft | Upper Fox |
|
South Branch Kishwaukee River Nr Fairdale Il, Il
21 hours ago · USGS 05439500 |
127 cfs | 2.27 ft | · | 67°F | 736 ft | Kishwaukee |
|
Big Muddy River At Plumfield, Il
22 hours ago · USGS 05597000 |
121 cfs | 3.26 ft | · | 79°F | 379 ft | Big Muddy |
|
Long Run Near Lemont, Il
22 hours ago · USGS 05537500 |
118 cfs | 3.39 ft | · | 69°F | 641 ft | Des Plaines |
|
Mill Creek At Milan, Il
21 hours ago · USGS 05448000 |
114 cfs | 2.76 ft | · | 69°F | 574 ft | Lower Rock |
|
E Br Du Page River Near Downers Grove, Il
22 hours ago · USGS 05540160 |
99 cfs | 12.70 ft | · | 69°F | 675 ft | Des Plaines |
|
Tinley Creek Near Palos Park, Il
21 hours ago · USGS 05536500 |
80 cfs | 3.51 ft | · | 70°F | 608 ft | Chicago |
|
Skokie River Near Highland Park, Il
21 hours ago · USGS 05535070 |
79 cfs | 4.16 ft | · | 68°F | 632 ft | Chicago |
|
Spring Brook At 87th Street Near Naperville, Il
21 hours ago · USGS 05540275 |
79 cfs | 5.25 ft | · | 69°F | 652 ft | Des Plaines |
|
Elkhorn Creek Near Penrose, Il
21 hours ago · USGS 05444000 |
76 cfs | 3.04 ft | · | 69°F | 669 ft | Lower Rock |
|
Apple River Near Hanover, Il
22 hours ago · USGS 05419000 |
75 cfs | 4.11 ft | · | 69°F | 596 ft | Apple-Plum |
|
Flag Creek Near Willow Springs, Il
22 hours ago · USGS 05533000 |
75 cfs | 4.12 ft | · | 70°F | 610 ft | Des Plaines |
|
Little Wabash River Below Clay City, Il
22 hours ago · USGS 03379500 |
71 cfs | 4.78 ft | · | 75°F | 477 ft | Little Wabash |
|
W Branch Du Page River Nr West Chicago, Il
21 hours ago · USGS 05539900 |
68 cfs | 4.47 ft | · | 68°F | 723 ft | Des Plaines |
|
Silver Creek Near Freeburg, Il
21 hours ago · USGS 05594800 |
67 cfs | · | · | 75°F | 418 ft | Lower Kaskaskia |
|
La Moine River At Ripley, Il
21 hours ago · USGS 05585000 |
67 cfs | 4.96 ft | · | 71°F | 467 ft | La Moine |
|
Sangamon River At Monticello, Il
21 hours ago · USGS 05572000 |
66 cfs | 5.06 ft | 77°F | 71°F | 646 ft | Upper Sangamon |
|
North Branch Chicago River At Deerfield, Il
21 hours ago · USGS 05534500 |
65 cfs | 6.01 ft | · | 68°F | 642 ft | Chicago |
|
Kickapoo Creek At Waynesville, Il
22 hours ago · USGS 05580000 |
60 cfs | 2.86 ft | · | 71°F | 635 ft | Salt |
|
Fondulac Creek Near East Peoria, Il
21 hours ago · USGS 05561500 |
59 cfs | 3.30 ft | · | 71°F | 521 ft | Lower Illinois-Senachwine Lake |
|
Sawmill Creek Near Lemont, Il
22 hours ago · USGS 05533400 |
58 cfs | 9.48 ft | · | 70°F | 647 ft | Des Plaines |
|
St. Joseph Creek At U.S. Route 34 At Lisle, Il
22 hours ago · USGS 05540195 |
57 cfs | 5.22 ft | · | 69°F | 673 ft | Des Plaines |
|
South Branch Kishwaukee River At Dekalb, Il
22 hours ago · USGS 05439000 |
56 cfs | 3.59 ft | · | 68°F | 846 ft | Kishwaukee |
|
Middle Fork Vermilion River Above Oakwood, Il
21 hours ago · USGS 03336645 |
55 cfs | 1.02 ft | · | 71°F | 560 ft | Vermilion |
|
La Moine River At Colmar, Il
21 hours ago · USGS 05584500 |
53 cfs | 3.63 ft | · | 71°F | 511 ft | La Moine |
|
Kress Creek At West Chicago, Il
22 hours ago · USGS 05540060 |
52 cfs | 4.81 ft | · | 69°F | 706 ft | Des Plaines |
|
Addison Creek At Bellwood, Il
22 hours ago · USGS 05532000 |
48 cfs | 2.04 ft | · | 70°F | 627 ft | Des Plaines |
|
Shoal Creek Near Breese, Il
21 hours ago · USGS 05594000 |
44 cfs | 1.18 ft | · | 75°F | 456 ft | Shoal |
|
Ferson Creek Near St. Charles, Il
22 hours ago · USGS 05551200 |
43 cfs | 1.92 ft | · | 68°F | 709 ft | Lower Fox |
|
Sangamon River At Fisher, Il
22 hours ago · USGS 05570910 |
43 cfs | 5.19 ft | 82°F | 70°F | 693 ft | Upper Sangamon |
|
Poplar Creek At Elgin, Il
21 hours ago · USGS 05550500 |
43 cfs | 1.72 ft | · | 68°F | 730 ft | Upper Fox |
|
Richland Creek Near Hecker, Il
21 hours ago · USGS 05595200 |
39 cfs | 27.98 ft | · | 75°F | 403 ft | Lower Kaskaskia |
|
Skokie River At Lake Forest, Il
21 hours ago · USGS 05535000 |
39 cfs | 2.63 ft | · | 70°F | 664 ft | Chicago |
|
Buffalo Creek Near Wheeling, Il
22 hours ago · USGS 05528500 |
36 cfs | 2.43 ft | · | 67°F | 667 ft | Des Plaines |
|
Mill Creek Near Batavia, Il
21 hours ago · USGS 05551330 |
35 cfs | 2.84 ft | · | 69°F | 690 ft | Lower Fox |
|
Salt Creek At Rolling Meadows, Il
21 hours ago · USGS 05530990 |
33 cfs | 2.90 ft | · | 68°F | 694 ft | Des Plaines |
|
Tyler Creek At Elgin, Il
21 hours ago · USGS 05550300 |
32 cfs | 5.97 ft | · | 68°F | 751 ft | Upper Fox |
|
Shoal Creek Nr Pierron, Il
21 hours ago · USGS 05593945 |
30 cfs | 42.54 ft | · | 75°F | 465 ft | Shoal |
|
Farm Creek At Farmdale, Il
22 hours ago · USGS 05560500 |
30 cfs | 1.34 ft | · | 71°F | 541 ft | Lower Illinois-Senachwine Lake |
|
Sinsinawa River Near Menominee, Il
22 hours ago · USGS 05414820 |
30 cfs | 4.82 ft | · | 69°F | 645 ft | Apple-Plum |
|
Salt Creek Near Rowell, Il
22 hours ago · USGS 05578500 |
28 cfs | 9.06 ft | 77°F | 71°F | 634 ft | Salt |
|
Embarras River Near Camargo, Il
22 hours ago · USGS 03343400 |
25 cfs | 3.02 ft | · | 70°F | 644 ft | Embarras |
|
Cahokia Creek At Edwardsville, Il
22 hours ago · USGS 05587900 |
25 cfs | 3.42 ft | · | 76°F | 456 ft | Cahokia-Joachim |
|
Wf Of Nb Chicago River At Northbrook Il, Il
22 hours ago · USGS 05535500 |
24 cfs | 1.32 ft | · | 68°F | 653 ft | Chicago |
|
Little Crooked Creek Near New Minden, Il
22 hours ago · USGS 05593575 |
22 cfs | 6.37 ft | · | 75°F | 485 ft | Middle Kaskaskia |
|
Nippersink Creek Above Wonder Lake, Il
21 hours ago · USGS 05548105 |
19 cfs | 4.74 ft | · | 66°F | 806 ft | Upper Fox |
|
Mill Creek At Old Mill Creek, Il
22 hours ago · USGS 05527950 |
18 cfs | 6.25 ft | · | 67°F | 677 ft | Des Plaines |
|
Macoupin Creek Near Kane, Il
22 hours ago · USGS 05587000 |
18 cfs | 4.02 ft | · | 73°F | 445 ft | Macoupin |
|
South Fork Sangamon River Nr Rochester, Il
21 hours ago · USGS 05576000 |
14 cfs | 5.42 ft | 75°F | 73°F | 518 ft | South Fork Sangamon |
|
Sangamon River At Rt 48 At Decatur, Il
21 hours ago · USGS 05573540 |
13 cfs | 2.01 ft | 75°F | 72°F | 618 ft | Upper Sangamon |
|
Kaskaskia River At Cooks Mills, Il
21 hours ago · USGS 05591200 |
12 cfs | 1.43 ft | · | 71°F | 641 ft | Upper Kaskaskia |
|
Lake Fork Near Cornland, Il
22 hours ago · USGS 05579500 |
12 cfs | 3.48 ft | · | 72°F | 569 ft | Salt |
|
South Fork Saline River Nr Carrier Mills, Il
22 hours ago · USGS 03382100 |
11 cfs | 2.35 ft | · | 79°F | 415 ft | Saline |
|
Boone Creek Near Mc Henry, Il
21 hours ago · USGS 05549000 |
11 cfs | 1.24 ft | · | 67°F | 779 ft | Upper Fox |
|
Cache River At Forman, Il
21 hours ago · USGS 03612000 |
11 cfs | 9.01 ft | · | 78°F | 367 ft | Lower Ohio |
|
Mc Donald Creek Near Mount Prospect, Il
21 hours ago · USGS 05529500 |
11 cfs | 1.27 ft | · | 68°F | 641 ft | Des Plaines |
|
Skillet Fork At Wayne City, Il
22 hours ago · USGS 03380500 |
10 cfs | 5.07 ft | · | 77°F | 387 ft | Skillet |
|
Hurricane Creek Near Mulberry Grove, Il
21 hours ago · USGS 05592800 |
10 cfs | 3.55 ft | · | 74°F | 551 ft | Middle Kaskaskia |
|
Little Wabash River Near Effingham, Il
22 hours ago · USGS 03378635 |
9 cfs | 10.53 ft | · | 73°F | 542 ft | Little Wabash |
|
Silver Creek Near Troy, Il
22 hours ago · USGS 05594450 |
7 cfs | 4.09 ft | · | 76°F | 491 ft | Lower Kaskaskia |
|
Boneyard Creek At Urbana, Il
22 hours ago · USGS 03337000 |
6 cfs | 10.73 ft | · | 70°F | 717 ft | Vermilion |
|
Bear Creek Near Marcelline, Il
22 hours ago · USGS 05495500 |
5 cfs | 2.38 ft | · | 73°F | 523 ft | Bear-Wyaconda |
|
Weller Creek At Des Plaines, Il
21 hours ago · USGS 05530000 |
4 cfs | · | · | 69°F | 648 ft | Des Plaines |
|
Bonpas Creek At Browns, Il
21 hours ago · USGS 03378000 |
4 cfs | 1.67 ft | · | 77°F | 451 ft | Lower Wabash |
|
North Fork Embarras River Near Oblong, Il
21 hours ago · USGS 03346000 |
4 cfs | 2.41 ft | · | 73°F | 498 ft | Embarras |
|
Casey Fork At Mount Vernon, Il
22 hours ago · USGS 05595820 |
2 cfs | 1.52 ft | · | 79°F | 441 ft | Big Muddy |
|
Indian Creek At Wanda, Il
22 hours ago · USGS 05588000 |
2 cfs | · | · | 76°F | 447 ft | Cahokia-Joachim |
|
East Fork Shoal Creek Near Coffeen, Il
21 hours ago · USGS 05593900 |
2 cfs | 1.88 ft | · | 72°F | 590 ft | Shoal |
|
West Okaw River Near Lovington, Il
21 hours ago · USGS 05591700 |
2 cfs | 3.04 ft | · | 71°F | 639 ft | Upper Kaskaskia |
|
Lusk Creek Near Eddyville, Il
21 hours ago · USGS 03384450 |
2 cfs | 2.25 ft | · | 78°F | 388 ft | Lower Ohio-Bay |
|
Spring Creek At Springfield, Il
21 hours ago · USGS 05577500 |
1 cfs | 1.65 ft | · | 73°F | 529 ft | Lower Sangamon |
|
Whitley Creek Near Allenville, Il
21 hours ago · USGS 05591550 |
1 cfs | 2.30 ft | · | 71°F | 625 ft | Upper Kaskaskia |
|
Robinson Creek Near Shelbyville, Il
21 hours ago · USGS 05592050 |
1 cfs | 1.58 ft | · | 72°F | 616 ft | Upper Kaskaskia |
|
Crab Orchard Creek Near Marion, Il
21 hours ago · USGS 05597500 |
1 cfs | · | · | 79°F | 430 ft | Big Muddy |
|
Lake Fork At Atwood, Il
22 hours ago · USGS 05590800 |
1 cfs | 1.44 ft | · | 71°F | 661 ft | Upper Kaskaskia |
|
Rayse Creek Near Waltonville, Il
21 hours ago · USGS 05595730 |
0 cfs | 1.40 ft | · | 79°F | 424 ft | Big Muddy |
|
Hickory Creek Nr Brownstown, Il
21 hours ago · USGS 05592575 |
0 cfs | 4.17 ft | · | 74°F | 507 ft | Middle Kaskaskia |
|
East Fork Kaskaskia River Near Sandoval, Il
21 hours ago · USGS 05592900 |
0 cfs | 2.69 ft | · | 75°F | 491 ft | Middle Kaskaskia |
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See every Illinois gauge ranked against normal.
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Flow report FAQ
About Illinois streamflow
What are river levels like in Illinois right now?
As of August 14, 2026, Illinois rivers are running at 89% of normal across 153 USGS streamgauges, and the Mississippi River At Thebes is reporting the highest discharge at 143,000 cfs. The full sortable gauge table is below.
Which Illinois river is running highest right now?
As of August 14, 2026, the highest discharge in Illinois is 143,000 cfs on the Mississippi River At Thebes. See the sortable gauge table for the full statewide ranking.
Are Illinois rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means Illinois rivers are running higher than the seasonal average for the date, below 100% means lower (a dry spell or drought). Each gauge also shows its own percent of median.
Where does the Illinois streamflow data come from?
The U.S. Geological Survey National Water Information System. USGS streamgauges report continuously (every 15 minutes) and the data is the canonical real-time record for U.S. rivers. Snoflo pulls the latest readings and joins them to a 7-day NOAA weather forecast for each station.
What is cfs?
Cubic feet per second — the standard unit for streamflow. One cfs is about 7.5 gallons per second. Small creeks run at single-digit cfs; the Mississippi at hundreds of thousands.
What does Gauge Height mean?
The water level at the gauge in feet above the reference datum. Used together with discharge to track river state. Flood stage and runnable levels are typically expressed in gauge height (e.g., "flood at 16 ft").
How fresh is the Illinois data?
USGS streamgauges report every 15 minutes; Snoflo re-pulls throughout the day. The AI briefing regenerates daily.
Can I get a flow alert for a Illinois gauge?
Yes. Save any USGS gauge as a favorite in the Snoflo iOS app, set a discharge or stage threshold (e.g. "alert me when discharge crosses 2,000 cfs"), and you'll get a push the moment it crosses.
Is this a substitute for an NWS flood warning?
No. Snoflo is informational. For flood life-safety decisions always follow guidance from your local NWS forecast office and state emergency management. Snoflo data is one input among several.
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