Flow report
Illinois River Levels & Streamflow
As of Aug 16, 2026, Illinois rivers are running at 119% of normal across 153 USGS gauges — the highest is 145,000 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
119%
Paddle runs
0
Updated
Aug 16
Open the Illinois flow layer on the map
Every USGS streamgauge filtered to Illinois.
Open the map →
August
16
2026
Flow briefing
Streamflow levels across Illinois are currently 119% of normal, with the Mississippi River At Thebes reporting the highest discharge in the state at 145,000 cfs and a gauge stage of 13.30 ft.
Meanwhile, the Middle Fork Vermilion River Above Oakwood is seeing a spike today — up 16293% 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 currently facing multiple weather hazards requiring immediate attention. Flood Warnings remain active across several regions: the Vermilion River near Danville (Vermilion County) is experiencing moderate flooding with crests expected this afternoon before receding Monday; the Wabash River affecting Hutsonville and Riverton is forecast to reach critical flood stages through Friday; and the Illinois River at La Salle (Bureau and La Salle Counties) is expected to rise above flood stage Monday evening. Simultaneously, dangerously hot conditions blanket southern and central Illinois, with extreme heat warnings in effect through this evening featuring heat indices of 105-110 degrees across Marion, Bond, Fayette, Montgomery, Calhoun, Greene, Jersey, Macoupin, Clay, Crawford, Effingham, Jasper, Lawrence, and Richland Counties. Residents near waterways should relocate to higher ground immediately, while all Illinoisans should limit outdoor activities and take precautions against heat-related illness.
Illinois is currently facing multiple weather hazards requiring immediate attention. Flood Warnings remain active across several regions: the Vermilion River near Danville (Vermilion County) is experiencing moderate flooding with crests expected this afternoon before receding Monday; the Wabash River affecting Hutsonville and Riverton is forecast to reach critical flood stages through Friday; and the Illinois River at La Salle (Bureau and La Salle Counties) is expected to rise above flood stage Monday evening. Simultaneously, dangerously hot conditions blanket southern and central Illinois, with extreme heat warnings in effect through this evening featuring heat indices of 105-110 degrees across Marion, Bond, Fayette, Montgomery, Calhoun, Greene, Jersey, Macoupin, Clay, Crawford, Effingham, Jasper, Lawrence, and Richland Counties. Residents near waterways should relocate to higher ground immediately, while all Illinoisans should limit outdoor activities and take precautions against heat-related illness.
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
119%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Mississippi River At Thebes
145,000 cfs
Gauge stage 13.30 ft
Biggest 24h spike
Middle Fork Vermilion River Above Oakwood
+16293%
Now 9,000 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
15 hours ago · USGS 07020500 |
152,000 cfs | 9.85 ft | · | 77°F | 358 ft | Upper Mississippi-Cape Girardeau |
|
Mississippi River At Thebes, Il
15 hours ago · USGS 07022000 |
146,000 cfs | 13.42 ft | · | 75°F | 321 ft | Upper Mississippi-Cape Girardeau |
|
Illinois River At Kingston Mines, Il
15 hours ago · USGS 05568500 |
33,400 cfs | 13.64 ft | · | 74°F | 441 ft | Lower Illinois-Lake Chautauqua |
|
Illinois River At Henry, Il
15 hours ago · USGS 05558300 |
32,300 cfs | 18.88 ft | 77°F | 72°F | 440 ft | Lower Illinois-Senachwine Lake |
|
Illinois River At Valley City, Il
16 hours ago · USGS 05586100 |
31,800 cfs | 8.05 ft | · | 74°F | 433 ft | Lower Illinois |
|
Illinois River At Marseilles, Il
15 hours ago · USGS 05543500 |
30,800 cfs | 16.73 ft | · | 74°F | 459 ft | Upper Illinois |
|
Vermilion River Near Danville, Il
16 hours ago · USGS 03339000 |
28,900 cfs | 24.13 ft | 64°F | 73°F | 517 ft | Vermilion |
|
Wabash River At Mt. Carmel, Il
15 hours ago · USGS 03377500 |
25,900 cfs | 8.39 ft | · | 79°F | 391 ft | Lower Wabash |
|
Kankakee River Near Wilmington, Il
15 hours ago · USGS 05527500 |
17,100 cfs | 4.44 ft | 73°F | 74°F | 511 ft | Kankakee |
|
Spoon River At Seville, Il
15 hours ago · USGS 05570000 |
17,000 cfs | 26.17 ft | 53°F | 73°F | 498 ft | Spoon |
|
Middle Fork Vermilion River Above Oakwood, Il
15 hours ago · USGS 03336645 |
14,300 cfs | 17.57 ft | · | 73°F | 560 ft | Vermilion |
|
Mackinaw River Near Green Valley, Il
15 hours ago · USGS 05568000 |
11,200 cfs | 25.89 ft | 75°F | 74°F | 501 ft | Mackinaw |
|
Pope Creek Near Keithsburg, Il
16 hours ago · USGS 05467000 |
10,800 cfs | 29.67 ft | · | 72°F | 550 ft | Flint-Henderson |
|
Kickapoo Creek At Waynesville, Il
16 hours ago · USGS 05580000 |
10,300 cfs | 16.01 ft | · | 74°F | 635 ft | Salt |
|
Spoon River At London Mills, Il
15 hours ago · USGS 05569500 |
9,990 cfs | 18.48 ft | 77°F | 72°F | 557 ft | Spoon |
|
Edwards River Near New Boston, Il
16 hours ago · USGS 05466500 |
9,110 cfs | 23.66 ft | · | 74°F | 561 ft | Flint-Henderson |
|
Henderson Creek Near Oquawka, Il
16 hours ago · USGS 05469000 |
8,790 cfs | 27.16 ft | · | 72°F | 611 ft | Flint-Henderson |
|
Iroquois River Near Chebanse, Il
15 hours ago · USGS 05526000 |
8,580 cfs | 11.14 ft | · | 73°F | 600 ft | Iroquois |
|
Sangamon River At Fisher, Il
16 hours ago · USGS 05570910 |
7,410 cfs | 19.56 ft | 82°F | 73°F | 693 ft | Upper Sangamon |
|
Rock River Near Joslin, Il
16 hours ago · USGS 05446500 |
5,590 cfs | 6.24 ft | 34°F | 72°F | 588 ft | Lower Rock |
|
Mackinaw River Near Congerville, Il
15 hours ago · USGS 05567500 |
5,590 cfs | 10.87 ft | 47°F | 74°F | 611 ft | Mackinaw |
|
Kankakee River At Momence, Il
15 hours ago · USGS 05520500 |
5,570 cfs | 4.04 ft | · | 73°F | 610 ft | Kankakee |
|
Salt Fork Near St. Joseph, Il
16 hours ago · USGS 03336900 |
5,050 cfs | 18.53 ft | · | 73°F | 661 ft | Vermilion |
|
Rock River At Como, Il
15 hours ago · USGS 05443500 |
4,900 cfs | 4.19 ft | · | 72°F | 618 ft | Lower Rock |
|
Fox River At Dayton, Il
15 hours ago · USGS 05552500 |
4,890 cfs | 8.93 ft | · | 73°F | 472 ft | Lower Fox |
|
La Moine River At Colmar, Il
15 hours ago · USGS 05584500 |
4,840 cfs | 20.86 ft | · | 73°F | 511 ft | La Moine |
|
Vermilion River Near Leonore, Il
15 hours ago · USGS 05555300 |
4,580 cfs | 10.46 ft | 76°F | 74°F | 535 ft | Vermilion |
|
Rock River At Byron, Il
16 hours ago · USGS 05440700 |
4,360 cfs | 6.12 ft | 76°F | 72°F | 677 ft | Lower Rock |
|
Salt Creek Near Greenview, Il
15 hours ago · USGS 05582000 |
4,170 cfs | 6.61 ft | 83°F | 74°F | 481 ft | Salt |
|
Sugar Creek At Milford, Il
16 hours ago · USGS 05525500 |
4,150 cfs | 17.88 ft | · | 73°F | 644 ft | Iroquois |
|
Mazon River Near Coal City, Il
15 hours ago · USGS 05542000 |
3,890 cfs | 7.67 ft | · | 74°F | 529 ft | Upper Illinois |
|
Sangamon River Near Oakford, Il
15 hours ago · USGS 05583000 |
3,770 cfs | 6.85 ft | 81°F | 74°F | 457 ft | Lower Sangamon |
|
Rock River At Rockton, Il
16 hours ago · USGS 05437500 |
3,300 cfs | 3.86 ft | · | 72°F | 712 ft | Lower Rock |
|
La Moine River At Ripley, Il
15 hours ago · USGS 05585000 |
2,950 cfs | 14.47 ft | · | 73°F | 467 ft | La Moine |
|
Vermilion River At Pontiac, Il
15 hours ago · USGS 05554500 |
2,710 cfs | 7.68 ft | 77°F | 74°F | 661 ft | Vermilion |
|
Embarras River At Ste. Marie, Il
15 hours ago · USGS 03345500 |
2,410 cfs | 7.34 ft | · | 75°F | 499 ft | Embarras |
|
Du Page River At Shorewood, Il
15 hours ago · USGS 05540500 |
2,150 cfs | 13.10 ft | · | 74°F | 566 ft | Des Plaines |
|
Fox River At Montgomery, Il
16 hours ago · USGS 05551540 |
2,030 cfs | 12.02 ft | · | 73°F | 613 ft | Lower Fox |
|
Sangamon River At Monticello, Il
16 hours ago · USGS 05572000 |
1,890 cfs | 12.60 ft | 77°F | 74°F | 646 ft | Upper Sangamon |
|
Iroquois River At Iroquois, Il
16 hours ago · USGS 05525000 |
1,880 cfs | 14.08 ft | · | 72°F | 638 ft | Iroquois |
|
Pecatonica River Nr Shirland, Il
16 hours ago · USGS 05437050 |
1,580 cfs | 5.07 ft | · | 72°F | 718 ft | Pecatonica |
|
Fox River At South Elgin, Il
15 hours ago · USGS 05551000 |
1,570 cfs | 12.89 ft | · | 73°F | 696 ft | Lower Fox |
|
Green River Near Geneseo, Il
16 hours ago · USGS 05447500 |
1,500 cfs | 6.63 ft | 58°F | 72°F | 586 ft | Green |
|
Fox River At Algonquin (Tailwater), Il
16 hours ago · USGS 05550001 |
1,380 cfs | 6.56 ft | 32°F | 73°F | 727 ft | Upper Fox |
|
Little Calumet River At South Holland, Il
15 hours ago · USGS 05536290 |
1,260 cfs | 11.98 ft | · | 74°F | 596 ft | Chicago |
|
Des Plaines River At Riverside, Il
15 hours ago · USGS 05532500 |
1,200 cfs | 3.69 ft | · | 74°F | 598 ft | Des Plaines |
|
Embarras River At Lawrenceville, Il
16 hours ago · USGS 03346500 |
1,190 cfs | 19.39 ft | 61°F | 75°F | 424 ft | Embarras |
|
Sangamon River At Rt 48 At Decatur, Il
15 hours ago · USGS 05573540 |
1,170 cfs | 7.10 ft | 75°F | 74°F | 618 ft | Upper Sangamon |
|
Kaskaskia River At Vandalia, Il
16 hours ago · USGS 05592500 |
1,170 cfs | 6.88 ft | · | 74°F | 537 ft | Middle Kaskaskia |
|
Kaskaskia River Near Venedy Station, Il
16 hours ago · USGS 05594100 |
1,030 cfs | 4.85 ft | · | 75°F | 395 ft | Lower Kaskaskia |
|
Kaskaskia River Near Cowden, Il
16 hours ago · USGS 05592100 |
968 cfs | 6.07 ft | · | 74°F | 553 ft | Upper Kaskaskia |
|
Embarras River Near Camargo, Il
16 hours ago · USGS 03343400 |
966 cfs | 9.31 ft | · | 73°F | 644 ft | Embarras |
|
Bear Creek Near Marcelline, Il
16 hours ago · USGS 05495500 |
944 cfs | 5.94 ft | · | 74°F | 523 ft | Bear-Wyaconda |
|
Kaskaskia River At Shelbyville, Il
16 hours ago · USGS 05592000 |
911 cfs | 9.14 ft | · | 79°F | 568 ft | Upper Kaskaskia |
|
Thorn Creek At Thornton, Il
15 hours ago · USGS 05536275 |
901 cfs | 6.90 ft | · | 74°F | 603 ft | Chicago |
|
Kaskaskia River At Carlyle, Il
16 hours ago · USGS 05593000 |
843 cfs | 8.33 ft | · | 75°F | 413 ft | Middle Kaskaskia |
|
Pecatonica River At Freeport, Il
16 hours ago · USGS 05435500 |
842 cfs | 4.74 ft | · | 71°F | 754 ft | Pecatonica |
|
Des Plaines River Near Des Plaines, Il
15 hours ago · USGS 05529000 |
821 cfs | 10.97 ft | · | 74°F | 625 ft | Des Plaines |
|
Sangamon River At Petersburg, Il
16 hours ago · USGS 05578000 |
810 cfs | 5.63 ft | 79°F | 74°F | 489 ft | Lower Sangamon |
|
Kaskaskia River At New Athens, Il
16 hours ago · USGS 05595000 |
697 cfs | 68.73 ft | 73°F | 75°F | 403 ft | Lower Kaskaskia |
|
Sugar Creek Near Bloomington, Il
16 hours ago · USGS 05580950 |
692 cfs | 3.23 ft | · | 73°F | 749 ft | Salt |
|
Salt Creek Near Rowell, Il
16 hours ago · USGS 05578500 |
660 cfs | 14.05 ft | 77°F | 74°F | 634 ft | Salt |
|
Sangamon River At Riverton, Il
15 hours ago · USGS 05576500 |
619 cfs | 4.63 ft | · | 74°F | 519 ft | Lower Sangamon |
|
Indian Creek Near Wyoming, Il
16 hours ago · USGS 05568800 |
559 cfs | 14.67 ft | · | 71°F | 623 ft | Spoon |
|
Big Bureau Creek At Princeton, Il
15 hours ago · USGS 05556500 |
517 cfs | 3.78 ft | · | 71°F | 603 ft | Lower Illinois-Senachwine Lake |
|
Hickory Creek At Joliet, Il
16 hours ago · USGS 05539000 |
497 cfs | 12.80 ft | · | 74°F | 535 ft | Des Plaines |
|
West Branch Du Page River Near Naperville, Il
16 hours ago · USGS 05540130 |
493 cfs | 5.64 ft | · | 74°F | 637 ft | Des Plaines |
|
Des Plaines River Near Gurnee, Il
16 hours ago · USGS 05528000 |
482 cfs | 4.62 ft | · | 73°F | 664 ft | Des Plaines |
|
East Branch Du Page River At Bolingbrook, Il
15 hours ago · USGS 05540250 |
449 cfs | 17.36 ft | · | 74°F | 640 ft | Des Plaines |
|
Kishwaukee River Near Perryville, Il
16 hours ago · USGS 05440000 |
439 cfs | 5.85 ft | · | 73°F | 701 ft | Kishwaukee |
|
Kaskaskia River At Cooks Mills, Il
16 hours ago · USGS 05591200 |
434 cfs | 5.06 ft | · | 74°F | 641 ft | Upper Kaskaskia |
|
Farm Creek At Farmdale, Il
16 hours ago · USGS 05560500 |
329 cfs | 3.70 ft | · | 72°F | 541 ft | Lower Illinois-Senachwine Lake |
|
Mill Creek At Milan, Il
16 hours ago · USGS 05448000 |
274 cfs | 3.60 ft | · | 73°F | 574 ft | Lower Rock |
|
Blackberry Creek Near Yorkville, Il
16 hours ago · USGS 05551700 |
262 cfs | 5.78 ft | · | 73°F | 617 ft | Lower Fox |
|
Blackberry Creek Near Montgomery, Il
16 hours ago · USGS 05551675 |
259 cfs | 5.82 ft | · | 73°F | 661 ft | Lower Fox |
|
Salt Creek At Western Springs, Il
15 hours ago · USGS 05531500 |
249 cfs | 2.84 ft | · | 74°F | 634 ft | Des Plaines |
|
Thorn Creek At Glenwood, Il
16 hours ago · USGS 05536215 |
236 cfs | 3.97 ft | · | 74°F | 628 ft | Chicago |
|
Des Plaines River At Russell, Il
16 hours ago · USGS 05527800 |
235 cfs | 6.25 ft | · | 72°F | 667 ft | Des Plaines |
|
West Br Du Page River Near Warrenville, Il
16 hours ago · USGS 05540095 |
229 cfs | 8.56 ft | · | 73°F | 688 ft | Des Plaines |
|
Kishwaukee River At Belvidere, Il
16 hours ago · USGS 05438500 |
212 cfs | 1.51 ft | · | 73°F | 740 ft | Kishwaukee |
|
North Branch Chicago River At Niles, Il
16 hours ago · USGS 05536000 |
209 cfs | 2.41 ft | · | 74°F | 608 ft | Chicago |
|
North Fork Embarras River Near Oblong, Il
16 hours ago · USGS 03346000 |
197 cfs | 5.27 ft | · | 75°F | 498 ft | Embarras |
|
Little Wabash River At Carmi, Il
16 hours ago · USGS 03381500 |
195 cfs | 3.00 ft | · | 78°F | 419 ft | Little Wabash |
|
Big Muddy River At Plumfield, Il
16 hours ago · USGS 05597000 |
170 cfs | 3.84 ft | · | 79°F | 379 ft | Big Muddy |
|
Big Muddy River At Rte 127 At Murphysboro, Il
16 hours ago · USGS 05599490 |
165 cfs | 3.69 ft | 89°F | 79°F | 357 ft | Big Muddy |
|
Lake Fork Near Cornland, Il
16 hours ago · USGS 05579500 |
155 cfs | 5.31 ft | · | 74°F | 569 ft | Salt |
|
Lake Fork At Atwood, Il
16 hours ago · USGS 05590800 |
147 cfs | 4.41 ft | · | 74°F | 661 ft | Upper Kaskaskia |
|
Nippersink Creek Near Spring Grove, Il
16 hours ago · USGS 05548280 |
140 cfs | 4.52 ft | · | 72°F | 754 ft | Upper Fox |
|
Deer Creek Near Chicago Heights, Il
16 hours ago · USGS 05536235 |
137 cfs | 6.73 ft | · | 74°F | 628 ft | Chicago |
|
Spring Brook At 87th Street Near Naperville, Il
15 hours ago · USGS 05540275 |
133 cfs | 5.75 ft | · | 73°F | 652 ft | Des Plaines |
|
Butterfield Creek At Flossmoor, Il
16 hours ago · USGS 05536255 |
124 cfs | 5.93 ft | · | 74°F | 635 ft | Chicago |
|
Salt Creek At Elmhurst, Il
16 hours ago · USGS 05531300 |
107 cfs | 5.68 ft | · | 74°F | 670 ft | Des Plaines |
|
Midlothian Creek At Oak Forest, Il
16 hours ago · USGS 05536340 |
103 cfs | 2.57 ft | · | 74°F | 629 ft | Chicago |
|
South Branch Kishwaukee River Nr Fairdale Il, Il
16 hours ago · USGS 05439500 |
101 cfs | 2.20 ft | · | 73°F | 736 ft | Kishwaukee |
|
E Br Du Page River Near Downers Grove, Il
16 hours ago · USGS 05540160 |
96 cfs | 12.68 ft | · | 73°F | 675 ft | Des Plaines |
|
Flag Creek Near Willow Springs, Il
16 hours ago · USGS 05533000 |
88 cfs | 4.22 ft | · | 74°F | 610 ft | Des Plaines |
|
Little Wabash River Near Effingham, Il
16 hours ago · USGS 03378635 |
76 cfs | 10.79 ft | · | 74°F | 542 ft | Little Wabash |
|
Apple River Near Hanover, Il
16 hours ago · USGS 05419000 |
69 cfs | 4.09 ft | · | 71°F | 596 ft | Apple-Plum |
|
Long Run Near Lemont, Il
16 hours ago · USGS 05537500 |
68 cfs | 2.61 ft | · | 74°F | 641 ft | Des Plaines |
|
St. Joseph Creek At U.S. Route 34 At Lisle, Il
16 hours ago · USGS 05540195 |
66 cfs | 5.36 ft | · | 73°F | 673 ft | Des Plaines |
|
Elkhorn Creek Near Penrose, Il
15 hours ago · USGS 05444000 |
65 cfs | 2.96 ft | · | 71°F | 669 ft | Lower Rock |
|
Little Wabash River Below Clay City, Il
16 hours ago · USGS 03379500 |
59 cfs | 4.65 ft | · | 74°F | 477 ft | Little Wabash |
|
Kress Creek At West Chicago, Il
16 hours ago · USGS 05540060 |
55 cfs | 4.85 ft | · | 73°F | 706 ft | Des Plaines |
|
Sawmill Creek Near Lemont, Il
16 hours ago · USGS 05533400 |
51 cfs | 9.41 ft | · | 74°F | 647 ft | Des Plaines |
|
South Branch Kishwaukee River At Dekalb, Il
16 hours ago · USGS 05439000 |
51 cfs | 3.53 ft | · | 72°F | 846 ft | Kishwaukee |
|
W Branch Du Page River Nr West Chicago, Il
15 hours ago · USGS 05539900 |
43 cfs | 4.18 ft | · | 73°F | 723 ft | Des Plaines |
|
Silver Creek Near Freeburg, Il
16 hours ago · USGS 05594800 |
41 cfs | · | · | 75°F | 418 ft | Lower Kaskaskia |
|
Shoal Creek Near Breese, Il
16 hours ago · USGS 05594000 |
40 cfs | 1.15 ft | · | 75°F | 456 ft | Shoal |
|
Ferson Creek Near St. Charles, Il
16 hours ago · USGS 05551200 |
39 cfs | 1.86 ft | · | 73°F | 709 ft | Lower Fox |
|
Nippersink Creek Above Wonder Lake, Il
15 hours ago · USGS 05548105 |
39 cfs | 4.97 ft | · | 73°F | 806 ft | Upper Fox |
|
North Branch Chicago River At Deerfield, Il
15 hours ago · USGS 05534500 |
37 cfs | 5.32 ft | · | 74°F | 642 ft | Chicago |
|
Mill Creek Near Batavia, Il
16 hours ago · USGS 05551330 |
36 cfs | 2.86 ft | · | 73°F | 690 ft | Lower Fox |
|
East Fork Kaskaskia River Near Sandoval, Il
16 hours ago · USGS 05592900 |
32 cfs | 3.70 ft | · | 75°F | 491 ft | Middle Kaskaskia |
|
Spring Creek At Springfield, Il
16 hours ago · USGS 05577500 |
32 cfs | 2.55 ft | · | 74°F | 529 ft | Lower Sangamon |
|
Tinley Creek Near Palos Park, Il
15 hours ago · USGS 05536500 |
32 cfs | 3.01 ft | · | 74°F | 608 ft | Chicago |
|
Skokie River Near Highland Park, Il
15 hours ago · USGS 05535070 |
31 cfs | 3.32 ft | · | 74°F | 632 ft | Chicago |
|
Macoupin Creek Near Kane, Il
16 hours ago · USGS 05587000 |
29 cfs | 4.17 ft | · | 73°F | 445 ft | Macoupin |
|
Sinsinawa River Near Menominee, Il
16 hours ago · USGS 05414820 |
29 cfs | 4.81 ft | · | 71°F | 645 ft | Apple-Plum |
|
Shoal Creek Nr Pierron, Il
16 hours ago · USGS 05593945 |
28 cfs | 42.49 ft | · | 75°F | 465 ft | Shoal |
|
Poplar Creek At Elgin, Il
16 hours ago · USGS 05550500 |
26 cfs | 1.53 ft | · | 73°F | 730 ft | Upper Fox |
|
Tyler Creek At Elgin, Il
15 hours ago · USGS 05550300 |
25 cfs | 5.89 ft | · | 73°F | 751 ft | Upper Fox |
|
Cahokia Creek At Edwardsville, Il
16 hours ago · USGS 05587900 |
24 cfs | 3.41 ft | · | 76°F | 456 ft | Cahokia-Joachim |
|
Mill Creek At Old Mill Creek, Il
16 hours ago · USGS 05527950 |
21 cfs | 6.33 ft | · | 73°F | 677 ft | Des Plaines |
|
Buffalo Creek Near Wheeling, Il
16 hours ago · USGS 05528500 |
20 cfs | 2.18 ft | · | 73°F | 667 ft | Des Plaines |
|
Hurricane Creek Near Mulberry Grove, Il
16 hours ago · USGS 05592800 |
20 cfs | 3.69 ft | · | 75°F | 551 ft | Middle Kaskaskia |
|
Addison Creek At Bellwood, Il
16 hours ago · USGS 05532000 |
20 cfs | 1.64 ft | · | 74°F | 627 ft | Des Plaines |
|
Richland Creek Near Hecker, Il
16 hours ago · USGS 05595200 |
17 cfs | 27.20 ft | · | 74°F | 403 ft | Lower Kaskaskia |
|
Fondulac Creek Near East Peoria, Il
15 hours ago · USGS 05561500 |
17 cfs | 2.64 ft | · | 73°F | 521 ft | Lower Illinois-Senachwine Lake |
|
Boneyard Creek At Lincoln Ave At Urbana, Il
15 hours ago · USGS 03337100 |
17 cfs | 7.73 ft | · | 73°F | 714 ft | Vermilion |
|
Salt Creek At Rolling Meadows, Il
15 hours ago · USGS 05530990 |
16 cfs | 2.59 ft | · | 73°F | 694 ft | Des Plaines |
|
Skokie River At Lake Forest, Il
15 hours ago · USGS 05535000 |
16 cfs | 2.34 ft | · | 73°F | 664 ft | Chicago |
|
Wf Of Nb Chicago River At Northbrook Il, Il
16 hours ago · USGS 05535500 |
14 cfs | 1.14 ft | · | 74°F | 653 ft | Chicago |
|
South Fork Sangamon River Nr Rochester, Il
15 hours ago · USGS 05576000 |
13 cfs | 5.37 ft | 75°F | 74°F | 518 ft | South Fork Sangamon |
|
South Fork Saline River Nr Carrier Mills, Il
16 hours ago · USGS 03382100 |
11 cfs | 2.35 ft | · | 78°F | 415 ft | Saline |
|
Boneyard Creek At Urbana, Il
16 hours ago · USGS 03337000 |
10 cfs | 11.00 ft | · | 73°F | 717 ft | Vermilion |
|
Skillet Fork At Wayne City, Il
16 hours ago · USGS 03380500 |
9 cfs | 5.05 ft | · | 77°F | 387 ft | Skillet |
|
Cache River At Forman, Il
16 hours ago · USGS 03612000 |
8 cfs | 8.87 ft | · | 77°F | 367 ft | Lower Ohio |
|
West Okaw River Near Lovington, Il
16 hours ago · USGS 05591700 |
8 cfs | 3.50 ft | · | 74°F | 639 ft | Upper Kaskaskia |
|
Whitley Creek Near Allenville, Il
16 hours ago · USGS 05591550 |
8 cfs | 2.75 ft | · | 73°F | 625 ft | Upper Kaskaskia |
|
Boone Creek Near Mc Henry, Il
15 hours ago · USGS 05549000 |
6 cfs | 1.09 ft | · | 73°F | 779 ft | Upper Fox |
|
Silver Creek Near Troy, Il
16 hours ago · USGS 05594450 |
5 cfs | 4.00 ft | · | 76°F | 491 ft | Lower Kaskaskia |
|
East Fork Shoal Creek Near Coffeen, Il
16 hours ago · USGS 05593900 |
5 cfs | 2.03 ft | · | 73°F | 590 ft | Shoal |
|
Mc Donald Creek Near Mount Prospect, Il
15 hours ago · USGS 05529500 |
4 cfs | 1.01 ft | · | 74°F | 641 ft | Des Plaines |
|
Hickory Creek Nr Brownstown, Il
16 hours ago · USGS 05592575 |
4 cfs | 4.51 ft | · | 75°F | 507 ft | Middle Kaskaskia |
|
Little Crooked Creek Near New Minden, Il
16 hours ago · USGS 05593575 |
3 cfs | 5.10 ft | · | 75°F | 485 ft | Middle Kaskaskia |
|
Bonpas Creek At Browns, Il
15 hours ago · USGS 03378000 |
2 cfs | 1.54 ft | · | 78°F | 451 ft | Lower Wabash |
|
Casey Fork At Mount Vernon, Il
16 hours ago · USGS 05595820 |
2 cfs | 1.52 ft | · | 78°F | 441 ft | Big Muddy |
|
Indian Creek At Wanda, Il
16 hours ago · USGS 05588000 |
2 cfs | · | · | 76°F | 447 ft | Cahokia-Joachim |
|
Robinson Creek Near Shelbyville, Il
16 hours ago · USGS 05592050 |
2 cfs | 1.63 ft | · | 79°F | 616 ft | Upper Kaskaskia |
|
Weller Creek At Des Plaines, Il
16 hours ago · USGS 05530000 |
2 cfs | · | · | 74°F | 648 ft | Des Plaines |
|
Lusk Creek Near Eddyville, Il
15 hours ago · USGS 03384450 |
1 cfs | 2.22 ft | · | 77°F | 388 ft | Lower Ohio-Bay |
|
Crab Orchard Creek Near Marion, Il
16 hours ago · USGS 05597500 |
1 cfs | · | · | 76°F | 430 ft | Big Muddy |
|
Rayse Creek Near Waltonville, Il
16 hours ago · USGS 05595730 |
0 cfs | 1.33 ft | · | 78°F | 424 ft | Big Muddy |
🔒 Premium
See every Illinois gauge ranked against normal.
- Percentile rank & % of median for all 153 gauges
- 15-day PULSE forecast on every gauge
- Custom flow alerts & full daily history
Flow report FAQ
About Illinois streamflow
What are river levels like in Illinois right now?
As of August 16, 2026, Illinois rivers are running at 119% of normal across 153 USGS streamgauges, and the Mississippi River At Thebes is reporting the highest discharge at 145,000 cfs. The full sortable gauge table is below.
Which Illinois river is running highest right now?
As of August 16, 2026, the highest discharge in Illinois is 145,000 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.
Browse other states
Streamflow in every state
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delaware
District Of Columbia
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Puerto Rico
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virgin Islands
Virginia
Washington
West Virginia
Wisconsin
Wyoming
Create a free account, or sign in.
Get the free Illinois report — alerts, favorites, and history & forecasts, plus the free iPhone app.
or
Already have an account?
Sign in