Flow report
Illinois River Levels & Streamflow
As of Aug 23, 2026, Illinois rivers are running at 164% of normal across 153 USGS gauges — the highest is 204,000 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
164%
Paddle runs
0
Updated
Aug 23
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Every USGS streamgauge filtered to Illinois.
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August
23
2026
Flow briefing
Streamflow levels across Illinois are currently 164% of normal, with the Mississippi River At Chester reporting the highest discharge in the state at 204,000 cfs and a gauge stage of 13.34 ft.
Meanwhile, the Little Wabash River Below Clay City is seeing a spike today — up 197% 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 residents are advised to exercise caution due to multiple active hazards across the state. Lake Michigan beachgoers in Northern and Central Cook Counties, including the Chicago area, face life-threatening swimming conditions through this evening with waves of 3-5 feet and dangerous currents. Additionally, minor flooding warnings remain in effect through late week along the Illinois River near Havana, Beardstown, and surrounding counties (Cass, Fulton, Mason, Schuyler, Brown, and Morgan), as well as the Wabash River affecting communities near Riverton, Mount Carmel, and Hutsonville. River stages are expected to recede by Friday, though some locations may experience peak flooding early in the week. Residents in flood-prone areas should avoid flooded roadways and monitor weather updates regularly.
Illinois residents are advised to exercise caution due to multiple active hazards across the state. Lake Michigan beachgoers in Northern and Central Cook Counties, including the Chicago area, face life-threatening swimming conditions through this evening with waves of 3-5 feet and dangerous currents. Additionally, minor flooding warnings remain in effect through late week along the Illinois River near Havana, Beardstown, and surrounding counties (Cass, Fulton, Mason, Schuyler, Brown, and Morgan), as well as the Wabash River affecting communities near Riverton, Mount Carmel, and Hutsonville. River stages are expected to recede by Friday, though some locations may experience peak flooding early in the week. Residents in flood-prone areas should avoid flooded roadways and monitor weather updates regularly.
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
164%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Mississippi River At Chester
204,000 cfs
Gauge stage 13.34 ft
Biggest 24h spike
Little Wabash River Below Clay City
+197%
Now 517 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
5 hours ago · USGS 07022000 |
192,000 cfs | 17.72 ft | · | 66°F | 321 ft | Upper Mississippi-Cape Girardeau |
|
Mississippi River At Chester, Il
5 hours ago · USGS 07020500 |
191,000 cfs | 12.34 ft | · | 66°F | 358 ft | Upper Mississippi-Cape Girardeau |
|
Wabash River At Mt. Carmel, Il
5 hours ago · USGS 03377500 |
70,000 cfs | 18.56 ft | · | 63°F | 391 ft | Lower Wabash |
|
Illinois River At Valley City, Il
6 hours ago · USGS 05586100 |
48,000 cfs | 12.47 ft | · | 60°F | 433 ft | Lower Illinois |
|
Illinois River At Kingston Mines, Il
6 hours ago · USGS 05568500 |
35,100 cfs | 15.55 ft | · | 59°F | 441 ft | Lower Illinois-Lake Chautauqua |
|
Illinois River At Henry, Il
6 hours ago · USGS 05558300 |
21,700 cfs | 20.12 ft | 77°F | 57°F | 440 ft | Lower Illinois-Senachwine Lake |
|
Illinois River At Marseilles, Il
6 hours ago · USGS 05543500 |
12,300 cfs | 13.29 ft | · | 58°F | 459 ft | Upper Illinois |
|
Sangamon River Near Oakford, Il
6 hours ago · USGS 05583000 |
8,960 cfs | 10.58 ft | 81°F | 59°F | 457 ft | Lower Sangamon |
|
Kankakee River Near Wilmington, Il
6 hours ago · USGS 05527500 |
7,140 cfs | 2.76 ft | 74°F | 59°F | 511 ft | Kankakee |
|
Sangamon River At Riverton, Il
6 hours ago · USGS 05576500 |
6,030 cfs | 15.38 ft | · | 60°F | 519 ft | Lower Sangamon |
|
Sangamon River At Petersburg, Il
7 hours ago · USGS 05578000 |
5,530 cfs | 11.89 ft | 79°F | 59°F | 489 ft | Lower Sangamon |
|
Embarras River At Lawrenceville, Il
6 hours ago · USGS 03346500 |
5,380 cfs | 25.24 ft | 61°F | 61°F | 424 ft | Embarras |
|
Sangamon River At Rt 48 At Decatur, Il
6 hours ago · USGS 05573540 |
5,350 cfs | 13.81 ft | 75°F | 59°F | 618 ft | Upper Sangamon |
|
Vermilion River Near Danville, Il
6 hours ago · USGS 03339000 |
4,550 cfs | 8.83 ft | 64°F | 59°F | 517 ft | Vermilion |
|
Rock River At Como, Il
6 hours ago · USGS 05443500 |
4,290 cfs | 3.89 ft | · | 55°F | 618 ft | Lower Rock |
|
Rock River Near Joslin, Il
6 hours ago · USGS 05446500 |
4,270 cfs | 5.40 ft | 34°F | 57°F | 588 ft | Lower Rock |
|
Rock River At Byron, Il
7 hours ago · USGS 05440700 |
4,050 cfs | 5.97 ft | 75°F | 56°F | 677 ft | Lower Rock |
|
Rock River At Rockton, Il
6 hours ago · USGS 05437500 |
3,680 cfs | 4.13 ft | · | 56°F | 712 ft | Lower Rock |
|
Kankakee River At Momence, Il
6 hours ago · USGS 05520500 |
3,490 cfs | 3.12 ft | · | 59°F | 610 ft | Kankakee |
|
Salt Creek Near Greenview, Il
6 hours ago · USGS 05582000 |
3,190 cfs | 5.56 ft | 83°F | 59°F | 481 ft | Salt |
|
Iroquois River Near Chebanse, Il
6 hours ago · USGS 05526000 |
2,410 cfs | 6.21 ft | · | 59°F | 600 ft | Iroquois |
|
Spoon River At Seville, Il
6 hours ago · USGS 05570000 |
2,190 cfs | 10.66 ft | 53°F | 59°F | 498 ft | Spoon |
|
Mackinaw River Near Green Valley, Il
6 hours ago · USGS 05568000 |
2,100 cfs | 17.22 ft | 75°F | 59°F | 501 ft | Mackinaw |
|
Fox River At Dayton, Il
6 hours ago · USGS 05552500 |
1,830 cfs | 6.64 ft | · | 58°F | 472 ft | Lower Fox |
|
Sangamon River At Monticello, Il
6 hours ago · USGS 05572000 |
1,740 cfs | 12.41 ft | 77°F | 59°F | 646 ft | Upper Sangamon |
|
Embarras River At Ste. Marie, Il
6 hours ago · USGS 03345500 |
1,460 cfs | 5.37 ft | · | 61°F | 499 ft | Embarras |
|
Pecatonica River Nr Shirland, Il
6 hours ago · USGS 05437050 |
1,460 cfs | 4.80 ft | · | 56°F | 718 ft | Pecatonica |
|
Spoon River At London Mills, Il
6 hours ago · USGS 05569500 |
1,400 cfs | 6.28 ft | 77°F | 58°F | 557 ft | Spoon |
|
La Moine River At Ripley, Il
6 hours ago · USGS 05585000 |
1,070 cfs | 9.60 ft | · | 59°F | 467 ft | La Moine |
|
Fox River At Montgomery, Il
7 hours ago · USGS 05551540 |
1,020 cfs | 11.49 ft | · | 58°F | 613 ft | Lower Fox |
|
Little Wabash River Below Clay City, Il
6 hours ago · USGS 03379500 |
1,010 cfs | 11.10 ft | · | 62°F | 477 ft | Little Wabash |
|
Fox River At South Elgin, Il
6 hours ago · USGS 05551000 |
1,000 cfs | 12.59 ft | · | 58°F | 696 ft | Lower Fox |
|
Kaskaskia River At Vandalia, Il
6 hours ago · USGS 05592500 |
986 cfs | 6.37 ft | · | 61°F | 537 ft | Middle Kaskaskia |
|
Kaskaskia River Near Venedy Station, Il
6 hours ago · USGS 05594100 |
984 cfs | 4.74 ft | · | 63°F | 395 ft | Lower Kaskaskia |
|
Middle Fork Vermilion River Above Oakwood, Il
6 hours ago · USGS 03336645 |
982 cfs | 2.88 ft | · | 59°F | 560 ft | Vermilion |
|
Mackinaw River Near Congerville, Il
6 hours ago · USGS 05567500 |
977 cfs | 3.69 ft | 47°F | 58°F | 611 ft | Mackinaw |
|
Kaskaskia River Near Cowden, Il
6 hours ago · USGS 05592100 |
918 cfs | 5.91 ft | · | 60°F | 553 ft | Upper Kaskaskia |
|
Kaskaskia River At Shelbyville, Il
6 hours ago · USGS 05592000 |
904 cfs | 9.12 ft | · | 60°F | 568 ft | Upper Kaskaskia |
|
Salt Creek Near Rowell, Il
6 hours ago · USGS 05578500 |
902 cfs | 15.45 ft | 77°F | 59°F | 634 ft | Salt |
|
Fox River At Algonquin (Tailwater), Il
6 hours ago · USGS 05550001 |
894 cfs | 5.74 ft | 32°F | 57°F | 727 ft | Upper Fox |
|
Vermilion River Near Leonore, Il
6 hours ago · USGS 05555300 |
847 cfs | 5.30 ft | 76°F | 58°F | 535 ft | Vermilion |
|
Kaskaskia River At Carlyle, Il
6 hours ago · USGS 05593000 |
847 cfs | 8.34 ft | · | 63°F | 413 ft | Middle Kaskaskia |
|
South Fork Sangamon River Nr Rochester, Il
6 hours ago · USGS 05576000 |
841 cfs | 14.74 ft | 75°F | 60°F | 518 ft | South Fork Sangamon |
|
Pecatonica River At Freeport, Il
6 hours ago · USGS 05435500 |
778 cfs | 4.45 ft | · | 53°F | 754 ft | Pecatonica |
|
Des Plaines River At Riverside, Il
6 hours ago · USGS 05532500 |
775 cfs | 3.09 ft | · | 62°F | 598 ft | Des Plaines |
|
Henderson Creek Near Oquawka, Il
6 hours ago · USGS 05469000 |
735 cfs | 17.18 ft | · | 58°F | 611 ft | Flint-Henderson |
|
Edwards River Near New Boston, Il
6 hours ago · USGS 05466500 |
683 cfs | 15.74 ft | · | 58°F | 561 ft | Flint-Henderson |
|
Green River Near Geneseo, Il
6 hours ago · USGS 05447500 |
615 cfs | 3.60 ft | 58°F | 57°F | 586 ft | Green |
|
Kaskaskia River At New Athens, Il
7 hours ago · USGS 05595000 |
603 cfs | 68.66 ft | 73°F | 63°F | 403 ft | Lower Kaskaskia |
|
Kaskaskia River At Cooks Mills, Il
6 hours ago · USGS 05591200 |
595 cfs | 5.99 ft | · | 59°F | 641 ft | Upper Kaskaskia |
|
Des Plaines River Near Des Plaines, Il
6 hours ago · USGS 05529000 |
575 cfs | 10.80 ft | · | 60°F | 625 ft | Des Plaines |
|
Little Wabash River At Carmi, Il
6 hours ago · USGS 03381500 |
567 cfs | 5.64 ft | · | 63°F | 419 ft | Little Wabash |
|
Du Page River At Shorewood, Il
6 hours ago · USGS 05540500 |
528 cfs | 10.86 ft | · | 59°F | 566 ft | Des Plaines |
|
Des Plaines River Near Gurnee, Il
6 hours ago · USGS 05528000 |
499 cfs | 4.70 ft | · | 58°F | 664 ft | Des Plaines |
|
Kishwaukee River Near Perryville, Il
6 hours ago · USGS 05440000 |
439 cfs | 5.85 ft | · | 56°F | 701 ft | Kishwaukee |
|
Iroquois River At Iroquois, Il
6 hours ago · USGS 05525000 |
427 cfs | 7.62 ft | · | 58°F | 638 ft | Iroquois |
|
Big Muddy River At Rte 127 At Murphysboro, Il
6 hours ago · USGS 05599490 |
421 cfs | 4.32 ft | 81°F | 64°F | 357 ft | Big Muddy |
|
La Moine River At Colmar, Il
6 hours ago · USGS 05584500 |
414 cfs | 6.81 ft | · | 59°F | 511 ft | La Moine |
|
Vermilion River At Pontiac, Il
6 hours ago · USGS 05554500 |
326 cfs | 3.93 ft | 77°F | 58°F | 661 ft | Vermilion |
|
Salt Fork Near St. Joseph, Il
6 hours ago · USGS 03336900 |
306 cfs | 6.15 ft | · | 59°F | 661 ft | Vermilion |
|
Embarras River Near Camargo, Il
7 hours ago · USGS 03343400 |
297 cfs | 6.55 ft | · | 59°F | 644 ft | Embarras |
|
Pope Creek Near Keithsburg, Il
6 hours ago · USGS 05467000 |
288 cfs | 21.37 ft | · | 58°F | 550 ft | Flint-Henderson |
|
Kickapoo Creek At Waynesville, Il
7 hours ago · USGS 05580000 |
283 cfs | 4.35 ft | · | 58°F | 635 ft | Salt |
|
Sugar Creek At Milford, Il
7 hours ago · USGS 05525500 |
271 cfs | 5.36 ft | · | 58°F | 644 ft | Iroquois |
|
Sangamon River At Fisher, Il
7 hours ago · USGS 05570910 |
245 cfs | 8.16 ft | 82°F | 59°F | 693 ft | Upper Sangamon |
|
Little Calumet River At South Holland, Il
6 hours ago · USGS 05536290 |
229 cfs | 6.89 ft | · | 62°F | 596 ft | Chicago |
|
Kishwaukee River At Belvidere, Il
6 hours ago · USGS 05438500 |
224 cfs | 1.55 ft | · | 56°F | 740 ft | Kishwaukee |
|
Mazon River Near Coal City, Il
6 hours ago · USGS 05542000 |
210 cfs | 2.20 ft | · | 58°F | 529 ft | Upper Illinois |
|
Salt Creek At Western Springs, Il
6 hours ago · USGS 05531500 |
161 cfs | 2.30 ft | · | 61°F | 634 ft | Des Plaines |
|
Des Plaines River At Russell, Il
6 hours ago · USGS 05527800 |
154 cfs | 5.78 ft | · | 58°F | 667 ft | Des Plaines |
|
West Branch Du Page River Near Naperville, Il
7 hours ago · USGS 05540130 |
139 cfs | 4.47 ft | · | 59°F | 637 ft | Des Plaines |
|
Nippersink Creek Near Spring Grove, Il
6 hours ago · USGS 05548280 |
137 cfs | 4.49 ft | · | 56°F | 754 ft | Upper Fox |
|
Hickory Creek At Joliet, Il
7 hours ago · USGS 05539000 |
130 cfs | 11.37 ft | · | 60°F | 535 ft | Des Plaines |
|
Thorn Creek At Thornton, Il
6 hours ago · USGS 05536275 |
121 cfs | 3.41 ft | · | 61°F | 603 ft | Chicago |
|
East Branch Du Page River At Bolingbrook, Il
6 hours ago · USGS 05540250 |
104 cfs | 15.14 ft | · | 60°F | 640 ft | Des Plaines |
|
Indian Creek Near Wyoming, Il
7 hours ago · USGS 05568800 |
94 cfs | 10.48 ft | · | 57°F | 623 ft | Spoon |
|
Big Muddy River At Plumfield, Il
6 hours ago · USGS 05597000 |
90 cfs | 2.86 ft | · | 63°F | 379 ft | Big Muddy |
|
Sugar Creek Near Bloomington, Il
7 hours ago · USGS 05580950 |
76 cfs | 1.31 ft | · | 58°F | 749 ft | Salt |
|
Salt Creek At Elmhurst, Il
6 hours ago · USGS 05531300 |
74 cfs | 5.42 ft | · | 60°F | 670 ft | Des Plaines |
|
Lake Fork At Atwood, Il
7 hours ago · USGS 05590800 |
73 cfs | 3.30 ft | · | 59°F | 661 ft | Upper Kaskaskia |
|
South Branch Kishwaukee River Nr Fairdale Il, Il
6 hours ago · USGS 05439500 |
71 cfs | 2.10 ft | · | 56°F | 736 ft | Kishwaukee |
|
Blackberry Creek Near Yorkville, Il
6 hours ago · USGS 05551700 |
70 cfs | 4.00 ft | · | 58°F | 617 ft | Lower Fox |
|
Apple River Near Hanover, Il
7 hours ago · USGS 05419000 |
66 cfs | 4.08 ft | · | 55°F | 596 ft | Apple-Plum |
|
Blackberry Creek Near Montgomery, Il
6 hours ago · USGS 05551675 |
64 cfs | 4.05 ft | · | 57°F | 661 ft | Lower Fox |
|
West Br Du Page River Near Warrenville, Il
7 hours ago · USGS 05540095 |
57 cfs | 7.87 ft | · | 59°F | 688 ft | Des Plaines |
|
Big Bureau Creek At Princeton, Il
6 hours ago · USGS 05556500 |
56 cfs | 2.98 ft | · | 56°F | 603 ft | Lower Illinois-Senachwine Lake |
|
North Branch Chicago River At Niles, Il
6 hours ago · USGS 05536000 |
55 cfs | 1.11 ft | · | 62°F | 608 ft | Chicago |
|
Elkhorn Creek Near Penrose, Il
6 hours ago · USGS 05444000 |
54 cfs | 2.87 ft | · | 55°F | 669 ft | Lower Rock |
|
South Branch Kishwaukee River At Dekalb, Il
6 hours ago · USGS 05439000 |
48 cfs | 3.50 ft | · | 56°F | 846 ft | Kishwaukee |
|
Thorn Creek At Glenwood, Il
7 hours ago · USGS 05536215 |
47 cfs | 2.71 ft | · | 61°F | 628 ft | Chicago |
|
Shoal Creek Near Breese, Il
6 hours ago · USGS 05594000 |
45 cfs | 1.19 ft | · | 63°F | 456 ft | Shoal |
|
E Br Du Page River Near Downers Grove, Il
6 hours ago · USGS 05540160 |
44 cfs | 12.21 ft | · | 60°F | 675 ft | Des Plaines |
|
Silver Creek Near Freeburg, Il
6 hours ago · USGS 05594800 |
40 cfs | · | · | 63°F | 418 ft | Lower Kaskaskia |
|
Mill Creek At Milan, Il
6 hours ago · USGS 05448000 |
39 cfs | 2.12 ft | · | 59°F | 574 ft | Lower Rock |
|
Lake Fork Near Cornland, Il
6 hours ago · USGS 05579500 |
37 cfs | 3.91 ft | · | 59°F | 569 ft | Salt |
|
Nippersink Creek Above Wonder Lake, Il
6 hours ago · USGS 05548105 |
33 cfs | 4.92 ft | · | 56°F | 806 ft | Upper Fox |
|
Farm Creek At Farmdale, Il
7 hours ago · USGS 05560500 |
28 cfs | 1.31 ft | · | 59°F | 541 ft | Lower Illinois-Senachwine Lake |
|
Sinsinawa River Near Menominee, Il
7 hours ago · USGS 05414820 |
26 cfs | 4.77 ft | · | 55°F | 645 ft | Apple-Plum |
|
Shoal Creek Nr Pierron, Il
6 hours ago · USGS 05593945 |
26 cfs | 42.46 ft | · | 62°F | 465 ft | Shoal |
|
W Branch Du Page River Nr West Chicago, Il
6 hours ago · USGS 05539900 |
25 cfs | 3.85 ft | · | 59°F | 723 ft | Des Plaines |
|
Spring Creek At Springfield, Il
7 hours ago · USGS 05577500 |
24 cfs | 2.41 ft | · | 61°F | 529 ft | Lower Sangamon |
|
Bear Creek Near Marcelline, Il
7 hours ago · USGS 05495500 |
23 cfs | 2.67 ft | · | 60°F | 523 ft | Bear-Wyaconda |
|
Cache River At Forman, Il
6 hours ago · USGS 03612000 |
22 cfs | 9.40 ft | · | 64°F | 367 ft | Lower Ohio |
|
Deer Creek Near Chicago Heights, Il
6 hours ago · USGS 05536235 |
22 cfs | 3.79 ft | · | 61°F | 628 ft | Chicago |
|
Mill Creek At Old Mill Creek, Il
7 hours ago · USGS 05527950 |
21 cfs | 6.32 ft | · | 58°F | 677 ft | Des Plaines |
|
Ferson Creek Near St. Charles, Il
7 hours ago · USGS 05551200 |
20 cfs | 1.57 ft | · | 58°F | 709 ft | Lower Fox |
|
Boneyard Creek At Lincoln Ave At Urbana, Il
6 hours ago · USGS 03337100 |
19 cfs | 7.77 ft | · | 60°F | 714 ft | Vermilion |
|
South Fork Saline River Nr Carrier Mills, Il
6 hours ago · USGS 03382100 |
18 cfs | 2.47 ft | · | 63°F | 415 ft | Saline |
|
Richland Creek Near Hecker, Il
6 hours ago · USGS 05595200 |
18 cfs | 27.26 ft | · | 64°F | 403 ft | Lower Kaskaskia |
|
Tyler Creek At Elgin, Il
6 hours ago · USGS 05550300 |
18 cfs | 5.78 ft | · | 58°F | 751 ft | Upper Fox |
|
Flag Creek Near Willow Springs, Il
7 hours ago · USGS 05533000 |
17 cfs | 3.41 ft | · | 61°F | 610 ft | Des Plaines |
|
Cahokia Creek At Edwardsville, Il
6 hours ago · USGS 05587900 |
17 cfs | 3.29 ft | · | 63°F | 456 ft | Cahokia-Joachim |
|
Butterfield Creek At Flossmoor, Il
6 hours ago · USGS 05536255 |
15 cfs | 4.28 ft | · | 61°F | 635 ft | Chicago |
|
Little Wabash River Near Effingham, Il
6 hours ago · USGS 03378635 |
15 cfs | 10.57 ft | · | 60°F | 542 ft | Little Wabash |
|
St. Joseph Creek At U.S. Route 34 At Lisle, Il
6 hours ago · USGS 05540195 |
14 cfs | 4.54 ft | · | 60°F | 673 ft | Des Plaines |
|
Macoupin Creek Near Kane, Il
6 hours ago · USGS 05587000 |
14 cfs | 3.94 ft | · | 60°F | 445 ft | Macoupin |
|
Boneyard Creek At Urbana, Il
6 hours ago · USGS 03337000 |
13 cfs | 11.08 ft | · | 60°F | 717 ft | Vermilion |
|
Skokie River Near Highland Park, Il
6 hours ago · USGS 05535070 |
12 cfs | 2.87 ft | · | 62°F | 632 ft | Chicago |
|
North Branch Chicago River At Deerfield, Il
6 hours ago · USGS 05534500 |
12 cfs | 4.72 ft | · | 62°F | 642 ft | Chicago |
|
Long Run Near Lemont, Il
7 hours ago · USGS 05537500 |
12 cfs | 1.07 ft | · | 60°F | 641 ft | Des Plaines |
|
East Fork Kaskaskia River Near Sandoval, Il
6 hours ago · USGS 05592900 |
12 cfs | 3.16 ft | · | 63°F | 491 ft | Middle Kaskaskia |
|
Skillet Fork At Wayne City, Il
7 hours ago · USGS 03380500 |
11 cfs | 5.08 ft | · | 61°F | 387 ft | Skillet |
|
Spring Brook At 87th Street Near Naperville, Il
6 hours ago · USGS 05540275 |
10 cfs | 3.27 ft | · | 59°F | 652 ft | Des Plaines |
|
Hurricane Creek Near Mulberry Grove, Il
6 hours ago · USGS 05592800 |
10 cfs | 3.55 ft | · | 62°F | 551 ft | Middle Kaskaskia |
|
Poplar Creek At Elgin, Il
6 hours ago · USGS 05550500 |
10 cfs | 1.25 ft | · | 58°F | 730 ft | Upper Fox |
|
Tinley Creek Near Palos Park, Il
6 hours ago · USGS 05536500 |
9 cfs | 2.61 ft | · | 61°F | 608 ft | Chicago |
|
North Fork Embarras River Near Oblong, Il
6 hours ago · USGS 03346000 |
9 cfs | 2.64 ft | · | 61°F | 498 ft | Embarras |
|
Kress Creek At West Chicago, Il
6 hours ago · USGS 05540060 |
8 cfs | 4.19 ft | · | 59°F | 706 ft | Des Plaines |
|
Wf Of Nb Chicago River At Northbrook Il, Il
7 hours ago · USGS 05535500 |
6 cfs | · | · | 61°F | 653 ft | Chicago |
|
Salt Creek At Rolling Meadows, Il
6 hours ago · USGS 05530990 |
6 cfs | 2.29 ft | · | 60°F | 694 ft | Des Plaines |
|
Bonpas Creek At Browns, Il
6 hours ago · USGS 03378000 |
6 cfs | 1.77 ft | · | 62°F | 451 ft | Lower Wabash |
|
Skokie River At Lake Forest, Il
6 hours ago · USGS 05535000 |
6 cfs | 2.11 ft | · | 60°F | 664 ft | Chicago |
|
Sawmill Creek Near Lemont, Il
7 hours ago · USGS 05533400 |
6 cfs | 8.54 ft | · | 60°F | 647 ft | Des Plaines |
|
Mill Creek Near Batavia, Il
6 hours ago · USGS 05551330 |
5 cfs | 2.22 ft | · | 58°F | 690 ft | Lower Fox |
|
Addison Creek At Bellwood, Il
7 hours ago · USGS 05532000 |
5 cfs | 1.22 ft | · | 61°F | 627 ft | Des Plaines |
|
Buffalo Creek Near Wheeling, Il
7 hours ago · USGS 05528500 |
5 cfs | 1.70 ft | · | 59°F | 667 ft | Des Plaines |
|
West Okaw River Near Lovington, Il
6 hours ago · USGS 05591700 |
5 cfs | 3.27 ft | · | 59°F | 639 ft | Upper Kaskaskia |
|
Boone Creek Near Mc Henry, Il
6 hours ago · USGS 05549000 |
4 cfs | 1.01 ft | · | 56°F | 779 ft | Upper Fox |
|
Midlothian Creek At Oak Forest, Il
6 hours ago · USGS 05536340 |
4 cfs | 1.64 ft | · | 61°F | 629 ft | Chicago |
|
Silver Creek Near Troy, Il
7 hours ago · USGS 05594450 |
4 cfs | 3.95 ft | · | 63°F | 491 ft | Lower Kaskaskia |
|
East Fork Shoal Creek Near Coffeen, Il
6 hours ago · USGS 05593900 |
3 cfs | 1.96 ft | · | 61°F | 590 ft | Shoal |
|
Casey Fork At Mount Vernon, Il
6 hours ago · USGS 05595820 |
3 cfs | 1.56 ft | · | 62°F | 441 ft | Big Muddy |
|
Fondulac Creek Near East Peoria, Il
6 hours ago · USGS 05561500 |
2 cfs | 2.27 ft | · | 59°F | 521 ft | Lower Illinois-Senachwine Lake |
|
Little Crooked Creek Near New Minden, Il
7 hours ago · USGS 05593575 |
2 cfs | 4.91 ft | · | 62°F | 485 ft | Middle Kaskaskia |
|
Indian Creek At Wanda, Il
7 hours ago · USGS 05588000 |
2 cfs | · | · | 63°F | 447 ft | Cahokia-Joachim |
|
Lusk Creek Near Eddyville, Il
6 hours ago · USGS 03384450 |
1 cfs | 2.22 ft | · | 63°F | 388 ft | Lower Ohio-Bay |
|
Whitley Creek Near Allenville, Il
6 hours ago · USGS 05591550 |
1 cfs | 2.31 ft | · | 59°F | 625 ft | Upper Kaskaskia |
|
Robinson Creek Near Shelbyville, Il
6 hours ago · USGS 05592050 |
1 cfs | 1.58 ft | · | 59°F | 616 ft | Upper Kaskaskia |
|
Mc Donald Creek Near Mount Prospect, Il
6 hours ago · USGS 05529500 |
1 cfs | · | · | 60°F | 641 ft | Des Plaines |
|
Weller Creek At Des Plaines, Il
6 hours ago · USGS 05530000 |
1 cfs | · | · | 61°F | 648 ft | Des Plaines |
|
Crab Orchard Creek Near Marion, Il
6 hours ago · USGS 05597500 |
1 cfs | · | · | 63°F | 430 ft | Big Muddy |
|
Hickory Creek Nr Brownstown, Il
6 hours ago · USGS 05592575 |
0 cfs | 4.18 ft | · | 61°F | 507 ft | Middle Kaskaskia |
|
Rayse Creek Near Waltonville, Il
6 hours ago · USGS 05595730 |
0 cfs | 1.35 ft | · | 62°F | 424 ft | Big Muddy |
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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 23, 2026, Illinois rivers are running at 164% of normal across 153 USGS streamgauges, and the Mississippi River At Chester is reporting the highest discharge at 204,000 cfs. The full sortable gauge table is below.
Which Illinois river is running highest right now?
As of August 23, 2026, the highest discharge in Illinois is 204,000 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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