Flow report
Illinois River Levels & Streamflow
As of Aug 12, 2026, Illinois rivers are running at 85% of normal across 153 USGS gauges — the highest is 163,000 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
85%
Paddle runs
0
Updated
Aug 12
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Every USGS streamgauge filtered to Illinois.
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August
12
2026
Flow briefing
Streamflow levels across Illinois are currently 85% of normal, with the Mississippi River At Thebes reporting the highest discharge in the state at 163,000 cfs and a gauge stage of 15.10 ft.
Meanwhile, the Mazon River Near Coal City is seeing a spike today — up 17210% 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 Alert - August 12, 2026
Multiple severe thunderstorm warnings and a tornado warning are active across Illinois through mid-morning, with dangerous conditions affecting major population centers. A tornado warning near Ottawa poses an immediate threat to the Ottawa, Harding, and Wedron areas with potential for mobile home destruction and flying debris. Severe thunderstorm warnings spanning from western counties (Hancock, McDonough) through central Illinois to the Chicago metropolitan area threaten damaging winds of 60-70 mph, heavy tree damage, and roof/structural damage in DeKalb, Sycamore, Rochelle, Streator, Marseilles, and the northeastern region including Chicago, Naperville, Aurora, and Joliet. A broader severe thunderstorm watch remains in effect until 1 PM CDT across 29 Illinois counties. Additionally, a heat advisory with heat index values reaching 105°F is in effect for central and western Illinois through 8 PM CDT. Residents should seek shelter immediately, avoid travel, and monitor weather updates closely.
Multiple severe thunderstorm warnings and a tornado warning are active across Illinois through mid-morning, with dangerous conditions affecting major population centers. A tornado warning near Ottawa poses an immediate threat to the Ottawa, Harding, and Wedron areas with potential for mobile home destruction and flying debris. Severe thunderstorm warnings spanning from western counties (Hancock, McDonough) through central Illinois to the Chicago metropolitan area threaten damaging winds of 60-70 mph, heavy tree damage, and roof/structural damage in DeKalb, Sycamore, Rochelle, Streator, Marseilles, and the northeastern region including Chicago, Naperville, Aurora, and Joliet. A broader severe thunderstorm watch remains in effect until 1 PM CDT across 29 Illinois counties. Additionally, a heat advisory with heat index values reaching 105°F is in effect for central and western Illinois through 8 PM CDT. Residents should seek shelter immediately, avoid travel, and monitor weather updates closely.
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
85%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Mississippi River At Thebes
163,000 cfs
Gauge stage 15.10 ft
Biggest 24h spike
Mazon River Near Coal City
+17210%
Now 2,510 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
11 hours ago · USGS 07022000 |
149,000 cfs | 13.81 ft | · | 76°F | 321 ft | Upper Mississippi-Cape Girardeau |
|
Mississippi River At Chester, Il
11 hours ago · USGS 07020500 |
137,000 cfs | 8.37 ft | · | 75°F | 358 ft | Upper Mississippi-Cape Girardeau |
|
Illinois River At Kingston Mines, Il
12 hours ago · USGS 05568500 |
16,700 cfs | 6.63 ft | · | 73°F | 441 ft | Lower Illinois-Lake Chautauqua |
|
Illinois River At Henry, Il
12 hours ago · USGS 05558300 |
16,600 cfs | 15.78 ft | 82°F | 70°F | 440 ft | Lower Illinois-Senachwine Lake |
|
Illinois River At Marseilles, Il
12 hours ago · USGS 05543500 |
15,600 cfs | 13.98 ft | · | 71°F | 459 ft | Upper Illinois |
|
Illinois River At Valley City, Il
12 hours ago · USGS 05586100 |
13,500 cfs | 4.14 ft | · | 74°F | 433 ft | Lower Illinois |
|
Wabash River At Mt. Carmel, Il
12 hours ago · USGS 03377500 |
12,600 cfs | 4.94 ft | · | 74°F | 391 ft | Lower Wabash |
|
Rock River At Byron, Il
12 hours ago · USGS 05440700 |
4,930 cfs | 6.39 ft | 78°F | 69°F | 677 ft | Lower Rock |
|
Rock River At Rockton, Il
12 hours ago · USGS 05437500 |
4,850 cfs | 4.90 ft | · | 69°F | 712 ft | Lower Rock |
|
Rock River Near Joslin, Il
13 hours ago · USGS 05446500 |
4,710 cfs | 5.69 ft | 34°F | 70°F | 588 ft | Lower Rock |
|
Rock River At Como, Il
12 hours ago · USGS 05443500 |
3,700 cfs | 3.59 ft | · | 69°F | 618 ft | Lower Rock |
|
Fox River At Dayton, Il
12 hours ago · USGS 05552500 |
3,650 cfs | 8.12 ft | · | 71°F | 472 ft | Lower Fox |
|
Kankakee River Near Wilmington, Il
12 hours ago · USGS 05527500 |
3,630 cfs | 1.97 ft | 77°F | 70°F | 511 ft | Kankakee |
|
Des Plaines River At Riverside, Il
12 hours ago · USGS 05532500 |
2,600 cfs | 5.25 ft | · | 71°F | 598 ft | Des Plaines |
|
Du Page River At Shorewood, Il
12 hours ago · USGS 05540500 |
2,470 cfs | 13.47 ft | · | 70°F | 566 ft | Des Plaines |
|
Fox River At Montgomery, Il
12 hours ago · USGS 05551540 |
2,330 cfs | 12.15 ft | · | 70°F | 613 ft | Lower Fox |
|
Fox River At South Elgin, Il
12 hours ago · USGS 05551000 |
2,010 cfs | 13.08 ft | · | 70°F | 696 ft | Lower Fox |
|
Thorn Creek At Thornton, Il
12 hours ago · USGS 05536275 |
1,980 cfs | 10.56 ft | · | 70°F | 603 ft | Chicago |
|
Kankakee River At Momence, Il
12 hours ago · USGS 05520500 |
1,870 cfs | 2.21 ft | · | 69°F | 610 ft | Kankakee |
|
Fox River At Algonquin (Tailwater), Il
12 hours ago · USGS 05550001 |
1,620 cfs | 6.92 ft | 32°F | 69°F | 727 ft | Upper Fox |
|
Kaskaskia River At Vandalia, Il
12 hours ago · USGS 05592500 |
1,610 cfs | 7.96 ft | · | 75°F | 537 ft | Middle Kaskaskia |
|
Kaskaskia River Near Venedy Station, Il
12 hours ago · USGS 05594100 |
1,550 cfs | 6.06 ft | · | 76°F | 395 ft | Lower Kaskaskia |
|
Pecatonica River Nr Shirland, Il
12 hours ago · USGS 05437050 |
1,520 cfs | 4.95 ft | · | 69°F | 718 ft | Pecatonica |
|
Des Plaines River Near Des Plaines, Il
12 hours ago · USGS 05529000 |
1,380 cfs | 13.02 ft | · | 70°F | 625 ft | Des Plaines |
|
Kaskaskia River Near Cowden, Il
12 hours ago · USGS 05592100 |
1,380 cfs | 7.29 ft | · | 73°F | 553 ft | Upper Kaskaskia |
|
Little Calumet River At South Holland, Il
12 hours ago · USGS 05536290 |
1,320 cfs | 12.57 ft | · | 70°F | 596 ft | Chicago |
|
Kaskaskia River At Shelbyville, Il
12 hours ago · USGS 05592000 |
1,270 cfs | 10.16 ft | · | 73°F | 568 ft | Upper Kaskaskia |
|
Kaskaskia River At New Athens, Il
12 hours ago · USGS 05595000 |
1,200 cfs | 68.78 ft | 73°F | 77°F | 403 ft | Lower Kaskaskia |
|
Mazon River Near Coal City, Il
12 hours ago · USGS 05542000 |
974 cfs | 3.89 ft | · | 70°F | 529 ft | Upper Illinois |
|
Kaskaskia River At Carlyle, Il
12 hours ago · USGS 05593000 |
935 cfs | 8.72 ft | · | 76°F | 413 ft | Middle Kaskaskia |
|
Hickory Creek At Joliet, Il
12 hours ago · USGS 05539000 |
911 cfs | 13.62 ft | · | 70°F | 535 ft | Des Plaines |
|
Pecatonica River At Freeport, Il
12 hours ago · USGS 05435500 |
813 cfs | 4.61 ft | · | 67°F | 754 ft | Pecatonica |
|
East Branch Du Page River At Bolingbrook, Il
12 hours ago · USGS 05540250 |
773 cfs | 18.66 ft | · | 70°F | 640 ft | Des Plaines |
|
Iroquois River Near Chebanse, Il
12 hours ago · USGS 05526000 |
706 cfs | 3.96 ft | · | 69°F | 600 ft | Iroquois |
|
Sangamon River Near Oakford, Il
12 hours ago · USGS 05583000 |
701 cfs | 3.76 ft | 81°F | 73°F | 457 ft | Lower Sangamon |
|
West Branch Du Page River Near Naperville, Il
12 hours ago · USGS 05540130 |
661 cfs | 6.09 ft | · | 70°F | 637 ft | Des Plaines |
|
Salt Creek At Western Springs, Il
12 hours ago · USGS 05531500 |
651 cfs | 4.83 ft | · | 71°F | 634 ft | Des Plaines |
|
Des Plaines River Near Gurnee, Il
12 hours ago · USGS 05528000 |
648 cfs | 5.37 ft | · | 68°F | 664 ft | Des Plaines |
|
Deer Creek Near Chicago Heights, Il
12 hours ago · USGS 05536235 |
543 cfs | 10.55 ft | · | 69°F | 628 ft | Chicago |
|
West Br Du Page River Near Warrenville, Il
12 hours ago · USGS 05540095 |
510 cfs | 9.33 ft | · | 70°F | 688 ft | Des Plaines |
|
North Branch Chicago River At Niles, Il
12 hours ago · USGS 05536000 |
492 cfs | 4.15 ft | · | 71°F | 608 ft | Chicago |
|
Butterfield Creek At Flossmoor, Il
12 hours ago · USGS 05536255 |
484 cfs | 8.83 ft | · | 70°F | 635 ft | Chicago |
|
Salt Creek At Elmhurst, Il
12 hours ago · USGS 05531300 |
439 cfs | 7.34 ft | · | 71°F | 670 ft | Des Plaines |
|
Thorn Creek At Glenwood, Il
12 hours ago · USGS 05536215 |
389 cfs | 4.90 ft | · | 69°F | 628 ft | Chicago |
|
Kishwaukee River Near Perryville, Il
12 hours ago · USGS 05440000 |
377 cfs | 5.73 ft | · | 70°F | 701 ft | Kishwaukee |
|
Green River Near Geneseo, Il
12 hours ago · USGS 05447500 |
357 cfs | 3.15 ft | 58°F | 70°F | 586 ft | Green |
|
Embarras River At Lawrenceville, Il
12 hours ago · USGS 03346500 |
317 cfs | 17.21 ft | 61°F | 73°F | 424 ft | Embarras |
|
Mackinaw River Near Green Valley, Il
12 hours ago · USGS 05568000 |
272 cfs | 13.76 ft | 75°F | 73°F | 501 ft | Mackinaw |
|
Des Plaines River At Russell, Il
12 hours ago · USGS 05527800 |
271 cfs | 6.40 ft | · | 68°F | 667 ft | Des Plaines |
|
Little Wabash River At Carmi, Il
13 hours ago · USGS 03381500 |
254 cfs | 3.26 ft | · | 75°F | 419 ft | Little Wabash |
|
Salt Creek Near Greenview, Il
12 hours ago · USGS 05582000 |
254 cfs | 1.45 ft | 83°F | 73°F | 481 ft | Salt |
|
Kishwaukee River At Belvidere, Il
12 hours ago · USGS 05438500 |
242 cfs | 1.61 ft | · | 70°F | 740 ft | Kishwaukee |
|
Sangamon River At Petersburg, Il
12 hours ago · USGS 05578000 |
221 cfs | 4.62 ft | 79°F | 74°F | 489 ft | Lower Sangamon |
|
Spoon River At Seville, Il
12 hours ago · USGS 05570000 |
219 cfs | 5.49 ft | 53°F | 73°F | 498 ft | Spoon |
|
Vermilion River Near Danville, Il
12 hours ago · USGS 03339000 |
210 cfs | 2.63 ft | 64°F | 69°F | 517 ft | Vermilion |
|
E Br Du Page River Near Downers Grove, Il
12 hours ago · USGS 05540160 |
187 cfs | 13.21 ft | · | 70°F | 675 ft | Des Plaines |
|
Blackberry Creek Near Montgomery, Il
12 hours ago · USGS 05551675 |
185 cfs | 5.26 ft | · | 70°F | 661 ft | Lower Fox |
|
Nippersink Creek Near Spring Grove, Il
12 hours ago · USGS 05548280 |
184 cfs | 4.83 ft | · | 68°F | 754 ft | Upper Fox |
|
Spring Brook At 87th Street Near Naperville, Il
12 hours ago · USGS 05540275 |
174 cfs | 6.04 ft | · | 70°F | 652 ft | Des Plaines |
|
Big Muddy River At Rte 127 At Murphysboro, Il
12 hours ago · USGS 05599490 |
173 cfs | 3.81 ft | 86°F | 76°F | 357 ft | Big Muddy |
|
Spoon River At London Mills, Il
12 hours ago · USGS 05569500 |
168 cfs | 2.31 ft | 77°F | 73°F | 557 ft | Spoon |
|
Blackberry Creek Near Yorkville, Il
12 hours ago · USGS 05551700 |
167 cfs | 5.04 ft | · | 70°F | 617 ft | Lower Fox |
|
Sangamon River At Riverton, Il
12 hours ago · USGS 05576500 |
166 cfs | 2.72 ft | · | 74°F | 519 ft | Lower Sangamon |
|
Embarras River At Ste. Marie, Il
12 hours ago · USGS 03345500 |
163 cfs | 1.43 ft | · | 73°F | 499 ft | Embarras |
|
W Branch Du Page River Nr West Chicago, Il
11 hours ago · USGS 05539900 |
157 cfs | 5.19 ft | · | 70°F | 723 ft | Des Plaines |
|
Poplar Creek At Elgin, Il
12 hours ago · USGS 05550500 |
155 cfs | 2.44 ft | · | 70°F | 730 ft | Upper Fox |
|
Flag Creek Near Willow Springs, Il
12 hours ago · USGS 05533000 |
141 cfs | 4.53 ft | · | 71°F | 610 ft | Des Plaines |
|
Midlothian Creek At Oak Forest, Il
12 hours ago · USGS 05536340 |
138 cfs | 3.06 ft | · | 70°F | 629 ft | Chicago |
|
Vermilion River Near Leonore, Il
12 hours ago · USGS 05555300 |
135 cfs | 3.67 ft | 76°F | 71°F | 535 ft | Vermilion |
|
Long Run Near Lemont, Il
12 hours ago · USGS 05537500 |
132 cfs | 3.57 ft | · | 70°F | 641 ft | Des Plaines |
|
Big Bureau Creek At Princeton, Il
12 hours ago · USGS 05556500 |
130 cfs | 2.79 ft | · | 70°F | 603 ft | Lower Illinois-Senachwine Lake |
|
Skokie River Near Highland Park, Il
12 hours ago · USGS 05535070 |
129 cfs | 4.89 ft | · | 70°F | 632 ft | Chicago |
|
Mackinaw River Near Congerville, Il
12 hours ago · USGS 05567500 |
121 cfs | 1.16 ft | 47°F | 72°F | 611 ft | Mackinaw |
|
Edwards River Near New Boston, Il
12 hours ago · USGS 05466500 |
104 cfs | 12.81 ft | · | 72°F | 561 ft | Flint-Henderson |
|
Henderson Creek Near Oquawka, Il
12 hours ago · USGS 05469000 |
95 cfs | 13.67 ft | · | 72°F | 611 ft | Flint-Henderson |
|
Apple River Near Hanover, Il
12 hours ago · USGS 05419000 |
94 cfs | 4.16 ft | · | 69°F | 596 ft | Apple-Plum |
|
North Branch Chicago River At Deerfield, Il
11 hours ago · USGS 05534500 |
93 cfs | 6.56 ft | · | 70°F | 642 ft | Chicago |
|
Buffalo Creek Near Wheeling, Il
12 hours ago · USGS 05528500 |
92 cfs | 3.06 ft | · | 70°F | 667 ft | Des Plaines |
|
Little Wabash River Below Clay City, Il
12 hours ago · USGS 03379500 |
87 cfs | 5.03 ft | · | 74°F | 477 ft | Little Wabash |
|
Big Muddy River At Plumfield, Il
12 hours ago · USGS 05597000 |
84 cfs | 2.78 ft | · | 77°F | 379 ft | Big Muddy |
|
Iroquois River At Iroquois, Il
12 hours ago · USGS 05525000 |
83 cfs | 5.11 ft | · | 68°F | 638 ft | Iroquois |
|
Sawmill Creek Near Lemont, Il
12 hours ago · USGS 05533400 |
82 cfs | 9.68 ft | · | 71°F | 647 ft | Des Plaines |
|
Ferson Creek Near St. Charles, Il
12 hours ago · USGS 05551200 |
80 cfs | 2.30 ft | · | 70°F | 709 ft | Lower Fox |
|
Vermilion River At Pontiac, Il
12 hours ago · USGS 05554500 |
79 cfs | 3.14 ft | 77°F | 70°F | 661 ft | Vermilion |
|
La Moine River At Ripley, Il
12 hours ago · USGS 05585000 |
76 cfs | 5.05 ft | · | 73°F | 467 ft | La Moine |
|
Wf Of Nb Chicago River At Northbrook Il, Il
12 hours ago · USGS 05535500 |
76 cfs | 2.08 ft | · | 70°F | 653 ft | Chicago |
|
St. Joseph Creek At U.S. Route 34 At Lisle, Il
12 hours ago · USGS 05540195 |
73 cfs | 5.47 ft | · | 70°F | 673 ft | Des Plaines |
|
Tinley Creek Near Palos Park, Il
12 hours ago · USGS 05536500 |
64 cfs | 3.31 ft | · | 71°F | 608 ft | Chicago |
|
Elkhorn Creek Near Penrose, Il
12 hours ago · USGS 05444000 |
61 cfs | 2.93 ft | · | 69°F | 669 ft | Lower Rock |
|
South Branch Kishwaukee River Nr Fairdale Il, Il
13 hours ago · USGS 05439500 |
59 cfs | 2.05 ft | · | 70°F | 736 ft | Kishwaukee |
|
Silver Creek Near Freeburg, Il
12 hours ago · USGS 05594800 |
58 cfs | · | · | 78°F | 418 ft | Lower Kaskaskia |
|
Skokie River At Lake Forest, Il
12 hours ago · USGS 05535000 |
58 cfs | 2.83 ft | · | 69°F | 664 ft | Chicago |
|
Mill Creek Near Batavia, Il
12 hours ago · USGS 05551330 |
54 cfs | 3.18 ft | · | 70°F | 690 ft | Lower Fox |
|
Kress Creek At West Chicago, Il
12 hours ago · USGS 05540060 |
52 cfs | 4.82 ft | · | 70°F | 706 ft | Des Plaines |
|
Salt Creek At Rolling Meadows, Il
12 hours ago · USGS 05530990 |
49 cfs | 3.09 ft | · | 70°F | 694 ft | Des Plaines |
|
Shoal Creek Near Breese, Il
12 hours ago · USGS 05594000 |
47 cfs | 1.23 ft | · | 76°F | 456 ft | Shoal |
|
Middle Fork Vermilion River Above Oakwood, Il
12 hours ago · USGS 03336645 |
42 cfs | · | · | 69°F | 560 ft | Vermilion |
|
Addison Creek At Bellwood, Il
12 hours ago · USGS 05532000 |
41 cfs | 1.96 ft | · | 71°F | 627 ft | Des Plaines |
|
Tyler Creek At Elgin, Il
12 hours ago · USGS 05550300 |
40 cfs | 6.06 ft | · | 69°F | 751 ft | Upper Fox |
|
La Moine River At Colmar, Il
12 hours ago · USGS 05584500 |
39 cfs | 3.43 ft | · | 73°F | 511 ft | La Moine |
|
Salt Fork Near St. Joseph, Il
13 hours ago · USGS 03336900 |
39 cfs | 3.15 ft | · | 69°F | 661 ft | Vermilion |
|
Sugar Creek At Milford, Il
12 hours ago · USGS 05525500 |
38 cfs | 3.15 ft | · | 69°F | 644 ft | Iroquois |
|
Shoal Creek Nr Pierron, Il
12 hours ago · USGS 05593945 |
36 cfs | 42.62 ft | · | 77°F | 465 ft | Shoal |
|
Sangamon River At Monticello, Il
12 hours ago · USGS 05572000 |
32 cfs | 4.55 ft | 77°F | 71°F | 646 ft | Upper Sangamon |
|
Sinsinawa River Near Menominee, Il
12 hours ago · USGS 05414820 |
32 cfs | 4.85 ft | · | 70°F | 645 ft | Apple-Plum |
|
Kickapoo Creek At Waynesville, Il
12 hours ago · USGS 05580000 |
28 cfs | 2.49 ft | · | 72°F | 635 ft | Salt |
|
Cahokia Creek At Edwardsville, Il
12 hours ago · USGS 05587900 |
27 cfs | 3.45 ft | · | 78°F | 456 ft | Cahokia-Joachim |
|
Sugar Creek Near Bloomington, Il
12 hours ago · USGS 05580950 |
27 cfs | · | · | 71°F | 749 ft | Salt |
|
Salt Creek Near Rowell, Il
12 hours ago · USGS 05578500 |
26 cfs | 9.01 ft | 77°F | 72°F | 634 ft | Salt |
|
Sangamon River At Fisher, Il
12 hours ago · USGS 05570910 |
26 cfs | 4.73 ft | 82°F | 70°F | 693 ft | Upper Sangamon |
|
Nippersink Creek Above Wonder Lake, Il
12 hours ago · USGS 05548105 |
25 cfs | 4.82 ft | · | 68°F | 806 ft | Upper Fox |
|
Richland Creek Near Hecker, Il
12 hours ago · USGS 05595200 |
22 cfs | 27.42 ft | · | 77°F | 403 ft | Lower Kaskaskia |
|
South Branch Kishwaukee River At Dekalb, Il
12 hours ago · USGS 05439000 |
21 cfs | 3.25 ft | · | 70°F | 846 ft | Kishwaukee |
|
Pope Creek Near Keithsburg, Il
12 hours ago · USGS 05467000 |
20 cfs | 19.16 ft | · | 72°F | 550 ft | Flint-Henderson |
|
South Fork Saline River Nr Carrier Mills, Il
12 hours ago · USGS 03382100 |
19 cfs | 2.48 ft | · | 76°F | 415 ft | Saline |
|
South Fork Sangamon River Nr Rochester, Il
12 hours ago · USGS 05576000 |
18 cfs | 5.54 ft | 75°F | 74°F | 518 ft | South Fork Sangamon |
|
Mill Creek At Old Mill Creek, Il
12 hours ago · USGS 05527950 |
18 cfs | 6.24 ft | · | 68°F | 677 ft | Des Plaines |
|
Macoupin Creek Near Kane, Il
12 hours ago · USGS 05587000 |
18 cfs | 4.02 ft | · | 75°F | 445 ft | Macoupin |
|
Mc Donald Creek Near Mount Prospect, Il
13 hours ago · USGS 05529500 |
18 cfs | 1.53 ft | · | 70°F | 641 ft | Des Plaines |
|
Cache River At Forman, Il
12 hours ago · USGS 03612000 |
18 cfs | 9.26 ft | · | 75°F | 367 ft | Lower Ohio |
|
Skillet Fork At Wayne City, Il
12 hours ago · USGS 03380500 |
16 cfs | 5.15 ft | · | 75°F | 387 ft | Skillet |
|
Embarras River Near Camargo, Il
12 hours ago · USGS 03343400 |
15 cfs | 2.66 ft | · | 71°F | 644 ft | Embarras |
|
Indian Creek Near Wyoming, Il
12 hours ago · USGS 05568800 |
15 cfs | 9.43 ft | · | 71°F | 623 ft | Spoon |
|
Kaskaskia River At Cooks Mills, Il
12 hours ago · USGS 05591200 |
14 cfs | 1.45 ft | · | 71°F | 641 ft | Upper Kaskaskia |
|
Sangamon River At Rt 48 At Decatur, Il
12 hours ago · USGS 05573540 |
13 cfs | 2.02 ft | 75°F | 73°F | 618 ft | Upper Sangamon |
|
Lake Fork Near Cornland, Il
12 hours ago · USGS 05579500 |
12 cfs | 3.48 ft | · | 74°F | 569 ft | Salt |
|
Mill Creek At Milan, Il
12 hours ago · USGS 05448000 |
11 cfs | 1.62 ft | · | 72°F | 574 ft | Lower Rock |
|
Hurricane Creek Near Mulberry Grove, Il
12 hours ago · USGS 05592800 |
9 cfs | 3.53 ft | · | 76°F | 551 ft | Middle Kaskaskia |
|
Boone Creek Near Mc Henry, Il
12 hours ago · USGS 05549000 |
9 cfs | 1.18 ft | · | 68°F | 779 ft | Upper Fox |
|
Silver Creek Near Troy, Il
12 hours ago · USGS 05594450 |
8 cfs | 4.19 ft | · | 78°F | 491 ft | Lower Kaskaskia |
|
Little Wabash River Near Effingham, Il
12 hours ago · USGS 03378635 |
8 cfs | 10.52 ft | · | 73°F | 542 ft | Little Wabash |
|
Rayse Creek Near Waltonville, Il
12 hours ago · USGS 05595730 |
7 cfs | 1.43 ft | · | 76°F | 424 ft | Big Muddy |
|
Bear Creek Near Marcelline, Il
1 day ago · USGS 05495500 |
7 cfs | 2.41 ft | · | 77°F | 523 ft | Bear-Wyaconda |
|
Boneyard Creek At Lincoln Ave At Urbana, Il
12 hours ago · USGS 03337100 |
5 cfs | 7.54 ft | · | 70°F | 714 ft | Vermilion |
|
North Fork Embarras River Near Oblong, Il
12 hours ago · USGS 03346000 |
4 cfs | 2.45 ft | · | 72°F | 498 ft | Embarras |
|
Boneyard Creek At Urbana, Il
12 hours ago · USGS 03337000 |
3 cfs | 10.49 ft | · | 70°F | 717 ft | Vermilion |
|
Weller Creek At Des Plaines, Il
12 hours ago · USGS 05530000 |
3 cfs | · | · | 70°F | 648 ft | Des Plaines |
|
Little Crooked Creek Near New Minden, Il
12 hours ago · USGS 05593575 |
3 cfs | 4.89 ft | · | 76°F | 485 ft | Middle Kaskaskia |
|
Indian Creek At Wanda, Il
12 hours ago · USGS 05588000 |
3 cfs | · | · | 78°F | 447 ft | Cahokia-Joachim |
|
Casey Fork At Mount Vernon, Il
12 hours ago · USGS 05595820 |
2 cfs | 1.53 ft | · | 76°F | 441 ft | Big Muddy |
|
Bonpas Creek At Browns, Il
12 hours ago · USGS 03378000 |
2 cfs | 1.53 ft | · | 74°F | 451 ft | Lower Wabash |
|
East Fork Shoal Creek Near Coffeen, Il
12 hours ago · USGS 05593900 |
2 cfs | 1.90 ft | · | 74°F | 590 ft | Shoal |
|
East Fork Kaskaskia River Near Sandoval, Il
12 hours ago · USGS 05592900 |
2 cfs | 2.82 ft | · | 76°F | 491 ft | Middle Kaskaskia |
|
Lusk Creek Near Eddyville, Il
12 hours ago · USGS 03384450 |
2 cfs | 2.28 ft | · | 74°F | 388 ft | Lower Ohio-Bay |
|
Farm Creek At Farmdale, Il
12 hours ago · USGS 05560500 |
2 cfs | · | · | 72°F | 541 ft | Lower Illinois-Senachwine Lake |
|
West Okaw River Near Lovington, Il
12 hours ago · USGS 05591700 |
2 cfs | 3.04 ft | · | 72°F | 639 ft | Upper Kaskaskia |
|
Spring Creek At Springfield, Il
12 hours ago · USGS 05577500 |
2 cfs | 1.66 ft | · | 75°F | 529 ft | Lower Sangamon |
|
Whitley Creek Near Allenville, Il
12 hours ago · USGS 05591550 |
1 cfs | 2.30 ft | · | 72°F | 625 ft | Upper Kaskaskia |
|
Robinson Creek Near Shelbyville, Il
12 hours ago · USGS 05592050 |
1 cfs | 1.59 ft | · | 73°F | 616 ft | Upper Kaskaskia |
|
Crab Orchard Creek Near Marion, Il
12 hours ago · USGS 05597500 |
1 cfs | · | · | 76°F | 430 ft | Big Muddy |
|
Lake Fork At Atwood, Il
12 hours ago · USGS 05590800 |
1 cfs | 1.44 ft | · | 71°F | 661 ft | Upper Kaskaskia |
|
Fondulac Creek Near East Peoria, Il
12 hours ago · USGS 05561500 |
0 cfs | 1.37 ft | · | 73°F | 521 ft | Lower Illinois-Senachwine Lake |
|
Hickory Creek Nr Brownstown, Il
12 hours ago · USGS 05592575 |
0 cfs | 3.99 ft | · | 76°F | 507 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 12, 2026, Illinois rivers are running at 85% of normal across 153 USGS streamgauges, and the Mississippi River At Thebes is reporting the highest discharge at 163,000 cfs. The full sortable gauge table is below.
Which Illinois river is running highest right now?
As of August 12, 2026, the highest discharge in Illinois is 163,000 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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