Flow report
Illinois River Levels & Streamflow
As of Aug 9, 2026, Illinois rivers are running at 87% of normal across 153 USGS gauges — the highest is 160,000 cfs on the Mississippi River At Chester. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Illinois.
USGS gauges
153
State percent normal
87%
Paddle runs
0
Updated
Aug 9
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Every USGS streamgauge filtered to Illinois.
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August
9
2026
Flow briefing
Streamflow levels across Illinois are currently 87% of normal, with the Mississippi River At Chester reporting the highest discharge in the state at 160,000 cfs and a gauge stage of 10.49 ft.
Meanwhile, the Kaskaskia River At New Athens is seeing a spike today — up 87% 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 Natural Disaster Report
Illinois is experiencing a significant heat event across multiple regions through August 12th. An Extreme Heat Warning is in effect for south-central and southwest Illinois, including areas around Madison County, with dangerously hot conditions and heat index values reaching 109°F. Additional Heat Advisories affect central, northern, and southern portions of the state, with heat indices between 100-108°F impacting counties including Sangamon, Knox, Christian, Shelby, and others through Wednesday evening. Residents statewide should take precautions against heat-related illnesses by staying hydrated, limiting outdoor activities during peak heat hours (noon-7 PM), and checking on vulnerable populations. The combination of extreme temperatures and high humidity poses significant health risks, particularly for children, elderly individuals, and those with medical conditions.
Illinois is experiencing a significant heat event across multiple regions through August 12th. An Extreme Heat Warning is in effect for south-central and southwest Illinois, including areas around Madison County, with dangerously hot conditions and heat index values reaching 109°F. Additional Heat Advisories affect central, northern, and southern portions of the state, with heat indices between 100-108°F impacting counties including Sangamon, Knox, Christian, Shelby, and others through Wednesday evening. Residents statewide should take precautions against heat-related illnesses by staying hydrated, limiting outdoor activities during peak heat hours (noon-7 PM), and checking on vulnerable populations. The combination of extreme temperatures and high humidity poses significant health risks, particularly for children, elderly individuals, and those with medical conditions.
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
87%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Mississippi River At Chester
160,000 cfs
Gauge stage 10.49 ft
Biggest 24h spike
Kaskaskia River At New Athens
+87%
Now 3,160 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 Chester, Il
7 hours ago · USGS 07020500 |
171,000 cfs | 11.41 ft | · | 73°F | 358 ft | Upper Mississippi-Cape Girardeau |
|
Mississippi River At Thebes, Il
7 hours ago · USGS 07022000 |
166,000 cfs | 15.09 ft | · | 70°F | 321 ft | Upper Mississippi-Cape Girardeau |
|
Wabash River At Mt. Carmel, Il
8 hours ago · USGS 03377500 |
15,900 cfs | 5.82 ft | · | 71°F | 391 ft | Lower Wabash |
|
Illinois River At Valley City, Il
8 hours ago · USGS 05586100 |
15,500 cfs | 4.66 ft | · | 70°F | 433 ft | Lower Illinois |
|
Illinois River At Kingston Mines, Il
9 hours ago · USGS 05568500 |
13,700 cfs | 6.07 ft | · | 68°F | 441 ft | Lower Illinois-Lake Chautauqua |
|
Illinois River At Henry, Il
8 hours ago · USGS 05558300 |
10,800 cfs | 15.19 ft | 80°F | 64°F | 440 ft | Lower Illinois-Senachwine Lake |
|
Illinois River At Marseilles, Il
8 hours ago · USGS 05543500 |
5,940 cfs | 11.77 ft | · | 64°F | 459 ft | Upper Illinois |
|
Rock River Near Joslin, Il
9 hours ago · USGS 05446500 |
5,900 cfs | 6.43 ft | 34°F | 64°F | 588 ft | Lower Rock |
|
Rock River At Como, Il
8 hours ago · USGS 05443500 |
4,800 cfs | 4.14 ft | · | 62°F | 618 ft | Lower Rock |
|
Rock River At Byron, Il
8 hours ago · USGS 05440700 |
4,240 cfs | 6.06 ft | 79°F | 61°F | 677 ft | Lower Rock |
|
Rock River At Rockton, Il
8 hours ago · USGS 05437500 |
4,000 cfs | 4.35 ft | · | 61°F | 712 ft | Lower Rock |
|
Kankakee River Near Wilmington, Il
8 hours ago · USGS 05527500 |
2,370 cfs | 1.62 ft | 78°F | 63°F | 511 ft | Kankakee |
|
Kaskaskia River Near Venedy Station, Il
8 hours ago · USGS 05594100 |
2,040 cfs | 7.09 ft | · | 71°F | 395 ft | Lower Kaskaskia |
|
Kaskaskia River At Vandalia, Il
8 hours ago · USGS 05592500 |
1,770 cfs | 8.33 ft | · | 70°F | 537 ft | Middle Kaskaskia |
|
Kaskaskia River At Carlyle, Il
8 hours ago · USGS 05593000 |
1,710 cfs | 10.84 ft | · | 71°F | 413 ft | Middle Kaskaskia |
|
Kaskaskia River Near Cowden, Il
8 hours ago · USGS 05592100 |
1,690 cfs | 8.11 ft | · | 70°F | 553 ft | Upper Kaskaskia |
|
Kaskaskia River At New Athens, Il
9 hours ago · USGS 05595000 |
1,680 cfs | 68.78 ft | 73°F | 70°F | 403 ft | Lower Kaskaskia |
|
Fox River At Dayton, Il
9 hours ago · USGS 05552500 |
1,660 cfs | 6.48 ft | · | 63°F | 472 ft | Lower Fox |
|
Kaskaskia River At Shelbyville, Il
8 hours ago · USGS 05592000 |
1,630 cfs | 11.13 ft | · | 70°F | 568 ft | Upper Kaskaskia |
|
Pecatonica River Nr Shirland, Il
9 hours ago · USGS 05437050 |
1,560 cfs | 5.04 ft | · | 61°F | 718 ft | Pecatonica |
|
Kankakee River At Momence, Il
9 hours ago · USGS 05520500 |
1,360 cfs | 1.85 ft | · | 63°F | 610 ft | Kankakee |
|
Fox River At South Elgin, Il
9 hours ago · USGS 05551000 |
1,250 cfs | 12.73 ft | · | 63°F | 696 ft | Lower Fox |
|
Fox River At Montgomery, Il
9 hours ago · USGS 05551540 |
1,240 cfs | 11.62 ft | · | 62°F | 613 ft | Lower Fox |
|
Fox River At Algonquin (Tailwater), Il
8 hours ago · USGS 05550001 |
1,110 cfs | 6.12 ft | 32°F | 62°F | 727 ft | Upper Fox |
|
Pecatonica River At Freeport, Il
8 hours ago · USGS 05435500 |
822 cfs | 4.65 ft | · | 60°F | 754 ft | Pecatonica |
|
Sangamon River Near Oakford, Il
9 hours ago · USGS 05583000 |
782 cfs | 3.87 ft | 81°F | 69°F | 457 ft | Lower Sangamon |
|
Des Plaines River Near Des Plaines, Il
8 hours ago · USGS 05529000 |
619 cfs | 10.42 ft | · | 65°F | 625 ft | Des Plaines |
|
Des Plaines River At Riverside, Il
9 hours ago · USGS 05532500 |
565 cfs | 2.72 ft | · | 66°F | 598 ft | Des Plaines |
|
Iroquois River Near Chebanse, Il
9 hours ago · USGS 05526000 |
483 cfs | 3.52 ft | · | 63°F | 600 ft | Iroquois |
|
Du Page River At Shorewood, Il
9 hours ago · USGS 05540500 |
455 cfs | 10.76 ft | · | 63°F | 566 ft | Des Plaines |
|
Des Plaines River Near Gurnee, Il
8 hours ago · USGS 05528000 |
440 cfs | 4.41 ft | · | 63°F | 664 ft | Des Plaines |
|
Kishwaukee River Near Perryville, Il
8 hours ago · USGS 05440000 |
363 cfs | 5.70 ft | · | 61°F | 701 ft | Kishwaukee |
|
Embarras River At Lawrenceville, Il
9 hours ago · USGS 03346500 |
350 cfs | 17.34 ft | 61°F | 71°F | 424 ft | Embarras |
|
Little Wabash River At Carmi, Il
9 hours ago · USGS 03381500 |
343 cfs | 3.57 ft | · | 71°F | 419 ft | Little Wabash |
|
Mackinaw River Near Green Valley, Il
9 hours ago · USGS 05568000 |
299 cfs | 13.84 ft | 75°F | 68°F | 501 ft | Mackinaw |
|
Salt Creek Near Greenview, Il
9 hours ago · USGS 05582000 |
293 cfs | 1.54 ft | 83°F | 69°F | 481 ft | Salt |
|
Spoon River At Seville, Il
9 hours ago · USGS 05570000 |
289 cfs | 5.79 ft | 53°F | 67°F | 498 ft | Spoon |
|
Green River Near Geneseo, Il
8 hours ago · USGS 05447500 |
272 cfs | 2.80 ft | 58°F | 65°F | 586 ft | Green |
|
Sangamon River At Petersburg, Il
8 hours ago · USGS 05578000 |
254 cfs | 4.70 ft | 79°F | 69°F | 489 ft | Lower Sangamon |
|
Vermilion River Near Danville, Il
8 hours ago · USGS 03339000 |
234 cfs | 2.71 ft | 64°F | 66°F | 517 ft | Vermilion |
|
Big Muddy River At Rte 127 At Murphysboro, Il
8 hours ago · USGS 05599490 |
217 cfs | 3.88 ft | 83°F | 74°F | 357 ft | Big Muddy |
|
Des Plaines River At Russell, Il
8 hours ago · USGS 05527800 |
204 cfs | 6.11 ft | · | 62°F | 667 ft | Des Plaines |
|
Spoon River At London Mills, Il
9 hours ago · USGS 05569500 |
200 cfs | 2.47 ft | 77°F | 67°F | 557 ft | Spoon |
|
Embarras River At Ste. Marie, Il
8 hours ago · USGS 03345500 |
192 cfs | 1.64 ft | · | 70°F | 499 ft | Embarras |
|
Silver Creek Near Freeburg, Il
8 hours ago · USGS 05594800 |
183 cfs | 2.01 ft | · | 71°F | 418 ft | Lower Kaskaskia |
|
Sangamon River At Riverton, Il
9 hours ago · USGS 05576500 |
179 cfs | 2.79 ft | · | 70°F | 519 ft | Lower Sangamon |
|
Little Calumet River At South Holland, Il
9 hours ago · USGS 05536290 |
177 cfs | 6.60 ft | · | 65°F | 596 ft | Chicago |
|
Kishwaukee River At Belvidere, Il
8 hours ago · USGS 05438500 |
170 cfs | 1.36 ft | · | 61°F | 740 ft | Kishwaukee |
|
Mackinaw River Near Congerville, Il
9 hours ago · USGS 05567500 |
160 cfs | 1.32 ft | 47°F | 67°F | 611 ft | Mackinaw |
|
Hickory Creek At Joliet, Il
8 hours ago · USGS 05539000 |
136 cfs | 11.41 ft | · | 63°F | 535 ft | Des Plaines |
|
Little Wabash River Below Clay City, Il
8 hours ago · USGS 03379500 |
128 cfs | 5.56 ft | · | 70°F | 477 ft | Little Wabash |
|
Edwards River Near New Boston, Il
8 hours ago · USGS 05466500 |
122 cfs | 12.97 ft | · | 66°F | 561 ft | Flint-Henderson |
|
La Moine River At Ripley, Il
9 hours ago · USGS 05585000 |
122 cfs | 5.41 ft | · | 69°F | 467 ft | La Moine |
|
Henderson Creek Near Oquawka, Il
8 hours ago · USGS 05469000 |
117 cfs | 13.84 ft | · | 67°F | 611 ft | Flint-Henderson |
|
Salt Creek At Western Springs, Il
9 hours ago · USGS 05531500 |
115 cfs | 2.02 ft | · | 65°F | 634 ft | Des Plaines |
|
Big Muddy River At Plumfield, Il
8 hours ago · USGS 05597000 |
115 cfs | 3.19 ft | · | 71°F | 379 ft | Big Muddy |
|
Iroquois River At Iroquois, Il
9 hours ago · USGS 05525000 |
108 cfs | 5.35 ft | · | 63°F | 638 ft | Iroquois |
|
West Branch Du Page River Near Naperville, Il
8 hours ago · USGS 05540130 |
104 cfs | 4.32 ft | · | 63°F | 637 ft | Des Plaines |
|
Big Bureau Creek At Princeton, Il
9 hours ago · USGS 05556500 |
98 cfs | 2.72 ft | · | 63°F | 603 ft | Lower Illinois-Senachwine Lake |
|
Vermilion River Near Leonore, Il
9 hours ago · USGS 05555300 |
95 cfs | 3.50 ft | 76°F | 63°F | 535 ft | Vermilion |
|
East Branch Du Page River At Bolingbrook, Il
8 hours ago · USGS 05540250 |
94 cfs | 15.03 ft | · | 64°F | 640 ft | Des Plaines |
|
Cache River At Forman, Il
9 hours ago · USGS 03612000 |
86 cfs | 10.16 ft | · | 70°F | 367 ft | Lower Ohio |
|
Thorn Creek At Thornton, Il
8 hours ago · USGS 05536275 |
86 cfs | 3.28 ft | · | 64°F | 603 ft | Chicago |
|
Nippersink Creek Near Spring Grove, Il
9 hours ago · USGS 05548280 |
71 cfs | 3.96 ft | · | 61°F | 754 ft | Upper Fox |
|
Apple River Near Hanover, Il
8 hours ago · USGS 05419000 |
63 cfs | 4.07 ft | · | 63°F | 596 ft | Apple-Plum |
|
La Moine River At Colmar, Il
9 hours ago · USGS 05584500 |
59 cfs | 3.74 ft | · | 69°F | 511 ft | La Moine |
|
South Branch Kishwaukee River Nr Fairdale Il, Il
9 hours ago · USGS 05439500 |
56 cfs | 2.04 ft | · | 61°F | 736 ft | Kishwaukee |
|
Middle Fork Vermilion River Above Oakwood, Il
9 hours ago · USGS 03336645 |
55 cfs | 1.02 ft | · | 66°F | 560 ft | Vermilion |
|
Elkhorn Creek Near Penrose, Il
9 hours ago · USGS 05444000 |
55 cfs | 2.88 ft | · | 62°F | 669 ft | Lower Rock |
|
Shoal Creek Nr Pierron, Il
8 hours ago · USGS 05593945 |
52 cfs | 42.89 ft | · | 71°F | 465 ft | Shoal |
|
Richland Creek Near Hecker, Il
8 hours ago · USGS 05595200 |
52 cfs | 28.29 ft | · | 70°F | 403 ft | Lower Kaskaskia |
|
Blackberry Creek Near Yorkville, Il
8 hours ago · USGS 05551700 |
52 cfs | 3.69 ft | · | 62°F | 617 ft | Lower Fox |
|
Thorn Creek At Glenwood, Il
8 hours ago · USGS 05536215 |
51 cfs | 2.74 ft | · | 63°F | 628 ft | Chicago |
|
Shoal Creek Near Breese, Il
8 hours ago · USGS 05594000 |
50 cfs | 1.25 ft | · | 71°F | 456 ft | Shoal |
|
Vermilion River At Pontiac, Il
9 hours ago · USGS 05554500 |
49 cfs | 2.95 ft | 77°F | 63°F | 661 ft | Vermilion |
|
Salt Creek At Elmhurst, Il
8 hours ago · USGS 05531300 |
48 cfs | 5.17 ft | · | 65°F | 670 ft | Des Plaines |
|
North Branch Chicago River At Niles, Il
8 hours ago · USGS 05536000 |
47 cfs | 1.02 ft | · | 66°F | 608 ft | Chicago |
|
Sangamon River At Monticello, Il
9 hours ago · USGS 05572000 |
46 cfs | 4.78 ft | 77°F | 68°F | 646 ft | Upper Sangamon |
|
West Br Du Page River Near Warrenville, Il
8 hours ago · USGS 05540095 |
44 cfs | 7.76 ft | · | 63°F | 688 ft | Des Plaines |
|
Blackberry Creek Near Montgomery, Il
8 hours ago · USGS 05551675 |
40 cfs | 3.79 ft | · | 62°F | 661 ft | Lower Fox |
|
Cahokia Creek At Edwardsville, Il
8 hours ago · USGS 05587900 |
38 cfs | 3.56 ft | · | 72°F | 456 ft | Cahokia-Joachim |
|
E Br Du Page River Near Downers Grove, Il
8 hours ago · USGS 05540160 |
38 cfs | 12.14 ft | · | 64°F | 675 ft | Des Plaines |
|
South Fork Saline River Nr Carrier Mills, Il
8 hours ago · USGS 03382100 |
32 cfs | 2.67 ft | · | 71°F | 415 ft | Saline |
|
Sangamon River At Fisher, Il
8 hours ago · USGS 05570910 |
31 cfs | 4.87 ft | 82°F | 66°F | 693 ft | Upper Sangamon |
|
Sugar Creek Near Bloomington, Il
8 hours ago · USGS 05580950 |
30 cfs | · | · | 67°F | 749 ft | Salt |
|
Sugar Creek At Milford, Il
9 hours ago · USGS 05525500 |
30 cfs | 3.01 ft | · | 64°F | 644 ft | Iroquois |
|
Salt Fork Near St. Joseph, Il
9 hours ago · USGS 03336900 |
30 cfs | 3.05 ft | · | 66°F | 661 ft | Vermilion |
|
Sinsinawa River Near Menominee, Il
8 hours ago · USGS 05414820 |
29 cfs | 4.81 ft | · | 64°F | 645 ft | Apple-Plum |
|
Pope Creek Near Keithsburg, Il
8 hours ago · USGS 05467000 |
28 cfs | 19.28 ft | · | 66°F | 550 ft | Flint-Henderson |
|
Kickapoo Creek At Waynesville, Il
8 hours ago · USGS 05580000 |
28 cfs | 2.49 ft | · | 68°F | 635 ft | Salt |
|
Salt Creek Near Rowell, Il
8 hours ago · USGS 05578500 |
26 cfs | 9.02 ft | 77°F | 68°F | 634 ft | Salt |
|
Macoupin Creek Near Kane, Il
8 hours ago · USGS 05587000 |
26 cfs | 4.14 ft | · | 70°F | 445 ft | Macoupin |
|
W Branch Du Page River Nr West Chicago, Il
9 hours ago · USGS 05539900 |
20 cfs | 3.75 ft | · | 64°F | 723 ft | Des Plaines |
|
East Fork Kaskaskia River Near Sandoval, Il
8 hours ago · USGS 05592900 |
20 cfs | 3.39 ft | · | 71°F | 491 ft | Middle Kaskaskia |
|
Butterfield Creek At Flossmoor, Il
8 hours ago · USGS 05536255 |
20 cfs | 4.41 ft | · | 64°F | 635 ft | Chicago |
|
Deer Creek Near Chicago Heights, Il
9 hours ago · USGS 05536235 |
20 cfs | 3.73 ft | · | 63°F | 628 ft | Chicago |
|
Sangamon River At Rt 48 At Decatur, Il
9 hours ago · USGS 05573540 |
20 cfs | 2.11 ft | 75°F | 69°F | 618 ft | Upper Sangamon |
|
Flag Creek Near Willow Springs, Il
8 hours ago · USGS 05533000 |
19 cfs | 3.35 ft | · | 64°F | 610 ft | Des Plaines |
|
Ferson Creek Near St. Charles, Il
8 hours ago · USGS 05551200 |
18 cfs | 1.53 ft | · | 62°F | 709 ft | Lower Fox |
|
Little Wabash River Near Effingham, Il
8 hours ago · USGS 03378635 |
18 cfs | 10.59 ft | · | 70°F | 542 ft | Little Wabash |
|
Mill Creek Near Batavia, Il
9 hours ago · USGS 05551330 |
18 cfs | 2.47 ft | · | 62°F | 690 ft | Lower Fox |
|
Indian Creek Near Wyoming, Il
8 hours ago · USGS 05568800 |
18 cfs | 9.49 ft | · | 65°F | 623 ft | Spoon |
|
Mazon River Near Coal City, Il
9 hours ago · USGS 05542000 |
17 cfs | 1.18 ft | · | 63°F | 529 ft | Upper Illinois |
|
Tyler Creek At Elgin, Il
9 hours ago · USGS 05550300 |
17 cfs | 5.76 ft | · | 62°F | 751 ft | Upper Fox |
|
Silver Creek Near Troy, Il
8 hours ago · USGS 05594450 |
17 cfs | 4.51 ft | · | 72°F | 491 ft | Lower Kaskaskia |
|
South Fork Sangamon River Nr Rochester, Il
9 hours ago · USGS 05576000 |
16 cfs | 5.48 ft | 75°F | 70°F | 518 ft | South Fork Sangamon |
|
Kaskaskia River At Cooks Mills, Il
8 hours ago · USGS 05591200 |
16 cfs | 1.52 ft | · | 70°F | 641 ft | Upper Kaskaskia |
|
Embarras River Near Camargo, Il
8 hours ago · USGS 03343400 |
16 cfs | 2.69 ft | · | 68°F | 644 ft | Embarras |
|
Mill Creek At Milan, Il
9 hours ago · USGS 05448000 |
14 cfs | 1.71 ft | · | 65°F | 574 ft | Lower Rock |
|
Lake Fork Near Cornland, Il
8 hours ago · USGS 05579500 |
14 cfs | 3.53 ft | · | 69°F | 569 ft | Salt |
|
Bear Creek Near Marcelline, Il
8 hours ago · USGS 05495500 |
13 cfs | 2.54 ft | · | 72°F | 523 ft | Bear-Wyaconda |
|
Hurricane Creek Near Mulberry Grove, Il
8 hours ago · USGS 05592800 |
11 cfs | 3.56 ft | · | 70°F | 551 ft | Middle Kaskaskia |
|
Mill Creek At Old Mill Creek, Il
9 hours ago · USGS 05527950 |
11 cfs | 6.00 ft | · | 62°F | 677 ft | Des Plaines |
|
North Branch Chicago River At Deerfield, Il
8 hours ago · USGS 05534500 |
10 cfs | 4.64 ft | · | 65°F | 642 ft | Chicago |
|
Rayse Creek Near Waltonville, Il
8 hours ago · USGS 05595730 |
10 cfs | 1.66 ft | · | 71°F | 424 ft | Big Muddy |
|
Skokie River Near Highland Park, Il
8 hours ago · USGS 05535070 |
10 cfs | 2.79 ft | · | 65°F | 632 ft | Chicago |
|
Spring Brook At 87th Street Near Naperville, Il
9 hours ago · USGS 05540275 |
10 cfs | 3.23 ft | · | 63°F | 652 ft | Des Plaines |
|
Kress Creek At West Chicago, Il
8 hours ago · USGS 05540060 |
8 cfs | 4.19 ft | · | 63°F | 706 ft | Des Plaines |
|
Long Run Near Lemont, Il
9 hours ago · USGS 05537500 |
8 cfs | · | · | 64°F | 641 ft | Des Plaines |
|
Poplar Creek At Elgin, Il
9 hours ago · USGS 05550500 |
8 cfs | 1.18 ft | · | 63°F | 730 ft | Upper Fox |
|
Skillet Fork At Wayne City, Il
9 hours ago · USGS 03380500 |
7 cfs | 5.01 ft | · | 70°F | 387 ft | Skillet |
|
Farm Creek At Farmdale, Il
9 hours ago · USGS 05560500 |
7 cfs | · | · | 68°F | 541 ft | Lower Illinois-Senachwine Lake |
|
North Fork Embarras River Near Oblong, Il
9 hours ago · USGS 03346000 |
6 cfs | 2.54 ft | · | 70°F | 498 ft | Embarras |
|
Salt Creek At Rolling Meadows, Il
9 hours ago · USGS 05530990 |
6 cfs | 2.29 ft | · | 65°F | 694 ft | Des Plaines |
|
Nippersink Creek Above Wonder Lake, Il
9 hours ago · USGS 05548105 |
6 cfs | 4.56 ft | · | 61°F | 806 ft | Upper Fox |
|
Buffalo Creek Near Wheeling, Il
8 hours ago · USGS 05528500 |
6 cfs | 1.76 ft | · | 64°F | 667 ft | Des Plaines |
|
Wf Of Nb Chicago River At Northbrook Il, Il
9 hours ago · USGS 05535500 |
6 cfs | · | · | 64°F | 653 ft | Chicago |
|
Addison Creek At Bellwood, Il
8 hours ago · USGS 05532000 |
5 cfs | 1.21 ft | · | 66°F | 627 ft | Des Plaines |
|
Little Crooked Creek Near New Minden, Il
8 hours ago · USGS 05593575 |
5 cfs | 5.06 ft | · | 71°F | 485 ft | Middle Kaskaskia |
|
Sawmill Creek Near Lemont, Il
9 hours ago · USGS 05533400 |
4 cfs | 8.45 ft | · | 64°F | 647 ft | Des Plaines |
|
Indian Creek At Wanda, Il
8 hours ago · USGS 05588000 |
4 cfs | · | · | 72°F | 447 ft | Cahokia-Joachim |
|
Boone Creek Near Mc Henry, Il
9 hours ago · USGS 05549000 |
4 cfs | · | · | 62°F | 779 ft | Upper Fox |
|
Tinley Creek Near Palos Park, Il
8 hours ago · USGS 05536500 |
3 cfs | 2.55 ft | · | 64°F | 608 ft | Chicago |
|
Casey Fork At Mount Vernon, Il
8 hours ago · USGS 05595820 |
3 cfs | 1.53 ft | · | 71°F | 441 ft | Big Muddy |
|
Spring Creek At Springfield, Il
9 hours ago · USGS 05577500 |
3 cfs | 1.76 ft | · | 70°F | 529 ft | Lower Sangamon |
|
Skokie River At Lake Forest, Il
8 hours ago · USGS 05535000 |
3 cfs | 2.00 ft | · | 64°F | 664 ft | Chicago |
|
South Branch Kishwaukee River At Dekalb, Il
8 hours ago · USGS 05439000 |
3 cfs | 2.83 ft | · | 62°F | 846 ft | Kishwaukee |
|
St. Joseph Creek At U.S. Route 34 At Lisle, Il
8 hours ago · USGS 05540195 |
3 cfs | 4.32 ft | · | 64°F | 673 ft | Des Plaines |
|
Boneyard Creek At Lincoln Ave At Urbana, Il
8 hours ago · USGS 03337100 |
2 cfs | 7.47 ft | · | 67°F | 714 ft | Vermilion |
|
Lusk Creek Near Eddyville, Il
8 hours ago · USGS 03384450 |
2 cfs | 2.39 ft | · | 70°F | 388 ft | Lower Ohio-Bay |
|
East Fork Shoal Creek Near Coffeen, Il
9 hours ago · USGS 05593900 |
2 cfs | 1.90 ft | · | 69°F | 590 ft | Shoal |
|
West Okaw River Near Lovington, Il
8 hours ago · USGS 05591700 |
2 cfs | 3.04 ft | · | 69°F | 639 ft | Upper Kaskaskia |
|
Bonpas Creek At Browns, Il
9 hours ago · USGS 03378000 |
2 cfs | 1.48 ft | · | 73°F | 451 ft | Lower Wabash |
|
Midlothian Creek At Oak Forest, Il
8 hours ago · USGS 05536340 |
2 cfs | 1.58 ft | · | 64°F | 629 ft | Chicago |
|
Crab Orchard Creek Near Marion, Il
9 hours ago · USGS 05597500 |
2 cfs | · | · | 71°F | 430 ft | Big Muddy |
|
Boneyard Creek At Urbana, Il
8 hours ago · USGS 03337000 |
2 cfs | 10.23 ft | · | 67°F | 717 ft | Vermilion |
|
Robinson Creek Near Shelbyville, Il
8 hours ago · USGS 05592050 |
1 cfs | 1.61 ft | · | 69°F | 616 ft | Upper Kaskaskia |
|
Whitley Creek Near Allenville, Il
8 hours ago · USGS 05591550 |
1 cfs | 2.33 ft | · | 70°F | 625 ft | Upper Kaskaskia |
|
Lake Fork At Atwood, Il
8 hours ago · USGS 05590800 |
1 cfs | 1.47 ft | · | 69°F | 661 ft | Upper Kaskaskia |
|
Mc Donald Creek Near Mount Prospect, Il
9 hours ago · USGS 05529500 |
1 cfs | · | · | 65°F | 641 ft | Des Plaines |
|
Weller Creek At Des Plaines, Il
9 hours ago · USGS 05530000 |
1 cfs | · | · | 65°F | 648 ft | Des Plaines |
|
Hickory Creek Nr Brownstown, Il
8 hours ago · USGS 05592575 |
0 cfs | 4.13 ft | · | 70°F | 507 ft | Middle Kaskaskia |
|
Fondulac Creek Near East Peoria, Il
9 hours ago · USGS 05561500 |
0 cfs | 1.37 ft | · | 68°F | 521 ft | Lower Illinois-Senachwine Lake |
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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 9, 2026, Illinois rivers are running at 87% of normal across 153 USGS streamgauges, and the Mississippi River At Chester is reporting the highest discharge at 160,000 cfs. The full sortable gauge table is below.
Which Illinois river is running highest right now?
As of August 9, 2026, the highest discharge in Illinois is 160,000 cfs on the Mississippi River At Chester. 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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