Flow report
Illinois River Levels & Streamflow
As of Aug 4, 2026, Illinois rivers are running at 70% of normal across 153 USGS gauges — the highest is 141,000 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
70%
Paddle runs
0
Updated
Aug 4
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Every USGS streamgauge filtered to Illinois.
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August
4
2026
Flow briefing
Streamflow levels across Illinois are currently 70% of normal, with the Mississippi River At Thebes reporting the highest discharge in the state at 141,000 cfs and a gauge stage of 11.57 ft.
Meanwhile, the Butterfield Creek At Flossmoor is seeing a spike today — up 7622% 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
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
70%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Mississippi River At Thebes
141,000 cfs
Gauge stage 11.57 ft
Biggest 24h spike
Butterfield Creek At Flossmoor
+7622%
Now 1,220 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
23 hours ago · USGS 07022000 |
139,000 cfs | 11.47 ft | · | 66°F | 321 ft | Upper Mississippi-Cape Girardeau |
|
Mississippi River At Chester, Il
23 hours ago · USGS 07020500 |
120,000 cfs | 6.49 ft | · | 65°F | 358 ft | Upper Mississippi-Cape Girardeau |
|
Illinois River At Henry, Il
1 day ago · USGS 05558300 |
25,000 cfs | 16.60 ft | 76°F | 60°F | 440 ft | Lower Illinois-Senachwine Lake |
|
Illinois River At Marseilles, Il
1 day ago · USGS 05543500 |
21,700 cfs | 15.14 ft | · | 61°F | 459 ft | Upper Illinois |
|
Illinois River At Kingston Mines, Il
1 day ago · USGS 05568500 |
18,600 cfs | 7.43 ft | · | 61°F | 441 ft | Lower Illinois-Lake Chautauqua |
|
Illinois River At Valley City, Il
1 day ago · USGS 05586100 |
14,400 cfs | 4.36 ft | · | 60°F | 433 ft | Lower Illinois |
|
Wabash River At Mt. Carmel, Il
1 day ago · USGS 03377500 |
11,500 cfs | 4.63 ft | · | 64°F | 391 ft | Lower Wabash |
|
Kankakee River Near Wilmington, Il
1 day ago · USGS 05527500 |
6,140 cfs | 2.55 ft | 70°F | 61°F | 511 ft | Kankakee |
|
Rock River At Como, Il
1 day ago · USGS 05443500 |
4,730 cfs | 4.08 ft | · | 59°F | 618 ft | Lower Rock |
|
Rock River At Byron, Il
1 day ago · USGS 05440700 |
4,510 cfs | 6.19 ft | 73°F | 57°F | 677 ft | Lower Rock |
|
Rock River At Rockton, Il
1 day ago · USGS 05437500 |
4,210 cfs | 4.49 ft | · | 57°F | 712 ft | Lower Rock |
|
Rock River Near Joslin, Il
1 day ago · USGS 05446500 |
4,010 cfs | 5.23 ft | 34°F | 60°F | 588 ft | Lower Rock |
|
Fox River At Dayton, Il
1 day ago · USGS 05552500 |
3,190 cfs | 7.78 ft | · | 60°F | 472 ft | Lower Fox |
|
Du Page River At Shorewood, Il
1 day ago · USGS 05540500 |
2,770 cfs | 13.89 ft | · | 62°F | 566 ft | Des Plaines |
|
Little Wabash River At Carmi, Il
1 day ago · USGS 03381500 |
2,640 cfs | 10.05 ft | · | 63°F | 419 ft | Little Wabash |
|
Kankakee River At Momence, Il
1 day ago · USGS 05520500 |
2,090 cfs | 2.35 ft | · | 61°F | 610 ft | Kankakee |
|
Fox River At Montgomery, Il
1 day ago · USGS 05551540 |
2,080 cfs | 12.04 ft | · | 60°F | 613 ft | Lower Fox |
|
Fox River At South Elgin, Il
1 day ago · USGS 05551000 |
1,890 cfs | 13.03 ft | · | 60°F | 696 ft | Lower Fox |
|
Pecatonica River Nr Shirland, Il
1 day ago · USGS 05437050 |
1,880 cfs | 5.73 ft | · | 57°F | 718 ft | Pecatonica |
|
Kaskaskia River Near Venedy Station, Il
1 day ago · USGS 05594100 |
1,840 cfs | 7.13 ft | · | 65°F | 395 ft | Lower Kaskaskia |
|
Kaskaskia River At Vandalia, Il
1 day ago · USGS 05592500 |
1,810 cfs | 8.41 ft | · | 63°F | 537 ft | Middle Kaskaskia |
|
Kaskaskia River At Carlyle, Il
1 day ago · USGS 05593000 |
1,730 cfs | 10.89 ft | · | 64°F | 413 ft | Middle Kaskaskia |
|
Kaskaskia River Near Cowden, Il
1 day ago · USGS 05592100 |
1,700 cfs | 8.14 ft | · | 61°F | 553 ft | Upper Kaskaskia |
|
Des Plaines River At Riverside, Il
1 day ago · USGS 05532500 |
1,670 cfs | 4.29 ft | · | 64°F | 598 ft | Des Plaines |
|
Fox River At Algonquin (Tailwater), Il
1 day ago · USGS 05550001 |
1,670 cfs | 6.99 ft | 32°F | 59°F | 727 ft | Upper Fox |
|
Kaskaskia River At Shelbyville, Il
1 day ago · USGS 05592000 |
1,640 cfs | 11.15 ft | · | 61°F | 568 ft | Upper Kaskaskia |
|
Little Calumet River At South Holland, Il
1 day ago · USGS 05536290 |
1,580 cfs | 13.52 ft | · | 64°F | 596 ft | Chicago |
|
Thorn Creek At Thornton, Il
1 day ago · USGS 05536275 |
1,420 cfs | 9.06 ft | · | 63°F | 603 ft | Chicago |
|
Sangamon River Near Oakford, Il
1 day ago · USGS 05583000 |
1,210 cfs | 4.39 ft | 81°F | 60°F | 457 ft | Lower Sangamon |
|
Hickory Creek At Joliet, Il
1 day ago · USGS 05539000 |
1,150 cfs | 13.99 ft | · | 62°F | 535 ft | Des Plaines |
|
Pecatonica River At Freeport, Il
1 day ago · USGS 05435500 |
1,110 cfs | 5.91 ft | · | 57°F | 754 ft | Pecatonica |
|
Kaskaskia River At New Athens, Il
1 day ago · USGS 05595000 |
1,100 cfs | 68.78 ft | 73°F | 65°F | 403 ft | Lower Kaskaskia |
|
Vermilion River Near Danville, Il
1 day ago · USGS 03339000 |
1,020 cfs | 4.56 ft | 64°F | 61°F | 517 ft | Vermilion |
|
Des Plaines River Near Des Plaines, Il
1 day ago · USGS 05529000 |
853 cfs | 11.29 ft | · | 62°F | 625 ft | Des Plaines |
|
Salt Creek Near Greenview, Il
1 day ago · USGS 05582000 |
755 cfs | 2.44 ft | 83°F | 61°F | 481 ft | Salt |
|
East Branch Du Page River At Bolingbrook, Il
1 day ago · USGS 05540250 |
691 cfs | 18.38 ft | · | 62°F | 640 ft | Des Plaines |
|
Salt Creek At Western Springs, Il
1 day ago · USGS 05531500 |
553 cfs | 4.38 ft | · | 63°F | 634 ft | Des Plaines |
|
Kishwaukee River Near Perryville, Il
1 day ago · USGS 05440000 |
534 cfs | 6.02 ft | · | 57°F | 701 ft | Kishwaukee |
|
Middle Fork Vermilion River Above Oakwood, Il
1 day ago · USGS 03336645 |
520 cfs | 2.29 ft | · | 61°F | 560 ft | Vermilion |
|
Des Plaines River Near Gurnee, Il
1 day ago · USGS 05528000 |
499 cfs | 4.70 ft | · | 60°F | 664 ft | Des Plaines |
|
Spoon River At London Mills, Il
1 day ago · USGS 05569500 |
473 cfs | 3.55 ft | 77°F | 59°F | 557 ft | Spoon |
|
Green River Near Geneseo, Il
1 day ago · USGS 05447500 |
433 cfs | 3.45 ft | 58°F | 59°F | 586 ft | Green |
|
West Branch Du Page River Near Naperville, Il
1 day ago · USGS 05540130 |
431 cfs | 5.46 ft | · | 62°F | 637 ft | Des Plaines |
|
Mackinaw River Near Green Valley, Il
1 day ago · USGS 05568000 |
405 cfs | 14.13 ft | 75°F | 61°F | 501 ft | Mackinaw |
|
Embarras River At Lawrenceville, Il
1 day ago · USGS 03346500 |
401 cfs | 17.52 ft | 61°F | 64°F | 424 ft | Embarras |
|
Spoon River At Seville, Il
1 day ago · USGS 05570000 |
389 cfs | 6.15 ft | 53°F | 59°F | 498 ft | Spoon |
|
Iroquois River Near Chebanse, Il
1 day ago · USGS 05526000 |
374 cfs | 3.27 ft | · | 61°F | 600 ft | Iroquois |
|
Sangamon River At Petersburg, Il
1 day ago · USGS 05578000 |
370 cfs | 4.93 ft | 79°F | 60°F | 489 ft | Lower Sangamon |
|
West Br Du Page River Near Warrenville, Il
1 day ago · USGS 05540095 |
355 cfs | 8.85 ft | · | 61°F | 688 ft | Des Plaines |
|
Vermilion River Near Leonore, Il
1 day ago · USGS 05555300 |
325 cfs | 4.19 ft | 76°F | 60°F | 535 ft | Vermilion |
|
Butterfield Creek At Flossmoor, Il
1 day ago · USGS 05536255 |
321 cfs | 6.99 ft | · | 62°F | 635 ft | Chicago |
|
Des Plaines River At Russell, Il
1 day ago · USGS 05527800 |
318 cfs | 6.59 ft | · | 60°F | 667 ft | Des Plaines |
|
Sugar Creek At Milford, Il
1 day ago · USGS 05525500 |
303 cfs | 5.60 ft | · | 61°F | 644 ft | Iroquois |
|
Henderson Creek Near Oquawka, Il
1 day ago · USGS 05469000 |
300 cfs | 14.86 ft | · | 61°F | 611 ft | Flint-Henderson |
|
Kishwaukee River At Belvidere, Il
1 day ago · USGS 05438500 |
292 cfs | 1.76 ft | · | 57°F | 740 ft | Kishwaukee |
|
Mackinaw River Near Congerville, Il
1 day ago · USGS 05567500 |
278 cfs | 1.81 ft | 47°F | 59°F | 611 ft | Mackinaw |
|
Sangamon River At Riverton, Il
1 day ago · USGS 05576500 |
271 cfs | 3.24 ft | · | 61°F | 519 ft | Lower Sangamon |
|
North Branch Chicago River At Niles, Il
1 day ago · USGS 05536000 |
262 cfs | 2.78 ft | · | 63°F | 608 ft | Chicago |
|
Edwards River Near New Boston, Il
1 day ago · USGS 05466500 |
261 cfs | 13.97 ft | · | 61°F | 561 ft | Flint-Henderson |
|
Mazon River Near Coal City, Il
1 day ago · USGS 05542000 |
259 cfs | 2.37 ft | · | 61°F | 529 ft | Upper Illinois |
|
Big Muddy River At Rte 127 At Murphysboro, Il
1 day ago · USGS 05599490 |
255 cfs | 3.89 ft | 80°F | 65°F | 357 ft | Big Muddy |
|
Salt Creek At Elmhurst, Il
1 day ago · USGS 05531300 |
253 cfs | 6.52 ft | · | 63°F | 670 ft | Des Plaines |
|
Embarras River At Ste. Marie, Il
1 day ago · USGS 03345500 |
225 cfs | 1.85 ft | · | 63°F | 499 ft | Embarras |
|
Blackberry Creek Near Yorkville, Il
1 day ago · USGS 05551700 |
198 cfs | 5.30 ft | · | 60°F | 617 ft | Lower Fox |
|
Cache River At Forman, Il
1 day ago · USGS 03612000 |
185 cfs | 11.49 ft | · | 64°F | 367 ft | Lower Ohio |
|
Midlothian Creek At Oak Forest, Il
1 day ago · USGS 05536340 |
179 cfs | 3.74 ft | · | 63°F | 629 ft | Chicago |
|
E Br Du Page River Near Downers Grove, Il
1 day ago · USGS 05540160 |
175 cfs | 13.16 ft | · | 62°F | 675 ft | Des Plaines |
|
Thorn Creek At Glenwood, Il
1 day ago · USGS 05536215 |
169 cfs | 3.46 ft | · | 62°F | 628 ft | Chicago |
|
Deer Creek Near Chicago Heights, Il
1 day ago · USGS 05536235 |
167 cfs | 7.38 ft | · | 62°F | 628 ft | Chicago |
|
Big Bureau Creek At Princeton, Il
1 day ago · USGS 05556500 |
167 cfs | 2.91 ft | · | 59°F | 603 ft | Lower Illinois-Senachwine Lake |
|
Little Wabash River Below Clay City, Il
1 day ago · USGS 03379500 |
158 cfs | 6.09 ft | · | 63°F | 477 ft | Little Wabash |
|
Blackberry Creek Near Montgomery, Il
1 day ago · USGS 05551675 |
147 cfs | 4.92 ft | · | 60°F | 661 ft | Lower Fox |
|
Silver Creek Near Freeburg, Il
1 day ago · USGS 05594800 |
137 cfs | 1.62 ft | · | 65°F | 418 ft | Lower Kaskaskia |
|
Nippersink Creek Near Spring Grove, Il
1 day ago · USGS 05548280 |
127 cfs | 4.42 ft | · | 58°F | 754 ft | Upper Fox |
|
Sangamon River At Fisher, Il
1 day ago · USGS 05570910 |
106 cfs | 6.24 ft | 82°F | 61°F | 693 ft | Upper Sangamon |
|
South Fork Saline River Nr Carrier Mills, Il
1 day ago · USGS 03382100 |
95 cfs | 3.31 ft | · | 62°F | 415 ft | Saline |
|
Pope Creek Near Keithsburg, Il
1 day ago · USGS 05467000 |
90 cfs | 19.99 ft | · | 60°F | 550 ft | Flint-Henderson |
|
Flag Creek Near Willow Springs, Il
1 day ago · USGS 05533000 |
89 cfs | 4.06 ft | · | 63°F | 610 ft | Des Plaines |
|
Big Muddy River At Plumfield, Il
1 day ago · USGS 05597000 |
88 cfs | 2.92 ft | · | 63°F | 379 ft | Big Muddy |
|
La Moine River At Ripley, Il
1 day ago · USGS 05585000 |
88 cfs | 5.15 ft | · | 59°F | 467 ft | La Moine |
|
Apple River Near Hanover, Il
1 day ago · USGS 05419000 |
86 cfs | 4.14 ft | · | 60°F | 596 ft | Apple-Plum |
|
South Branch Kishwaukee River Nr Fairdale Il, Il
1 day ago · USGS 05439500 |
85 cfs | 2.15 ft | · | 57°F | 736 ft | Kishwaukee |
|
Sugar Creek Near Bloomington, Il
1 day ago · USGS 05580950 |
80 cfs | 1.34 ft | · | 60°F | 749 ft | Salt |
|
Sangamon River At Rt 48 At Decatur, Il
1 day ago · USGS 05573540 |
78 cfs | 2.51 ft | 75°F | 61°F | 618 ft | Upper Sangamon |
|
Cahokia Creek At Edwardsville, Il
1 day ago · USGS 05587900 |
78 cfs | 3.82 ft | · | 64°F | 456 ft | Cahokia-Joachim |
|
Vermilion River At Pontiac, Il
1 day ago · USGS 05554500 |
76 cfs | 3.12 ft | 77°F | 60°F | 661 ft | Vermilion |
|
Elkhorn Creek Near Penrose, Il
1 day ago · USGS 05444000 |
69 cfs | 2.99 ft | · | 59°F | 669 ft | Lower Rock |
|
Kickapoo Creek At Waynesville, Il
1 day ago · USGS 05580000 |
69 cfs | 2.95 ft | · | 60°F | 635 ft | Salt |
|
Iroquois River At Iroquois, Il
1 day ago · USGS 05525000 |
68 cfs | 4.94 ft | · | 60°F | 638 ft | Iroquois |
|
Sangamon River At Monticello, Il
1 day ago · USGS 05572000 |
65 cfs | 5.04 ft | 77°F | 60°F | 646 ft | Upper Sangamon |
|
Kress Creek At West Chicago, Il
1 day ago · USGS 05540060 |
65 cfs | 4.96 ft | · | 61°F | 706 ft | Des Plaines |
|
Addison Creek At Bellwood, Il
1 day ago · USGS 05532000 |
60 cfs | 2.18 ft | · | 64°F | 627 ft | Des Plaines |
|
Mill Creek Near Batavia, Il
1 day ago · USGS 05551330 |
58 cfs | 3.24 ft | · | 60°F | 690 ft | Lower Fox |
|
Long Run Near Lemont, Il
1 day ago · USGS 05537500 |
57 cfs | 2.39 ft | · | 62°F | 641 ft | Des Plaines |
|
Skokie River Near Highland Park, Il
1 day ago · USGS 05535070 |
56 cfs | 3.79 ft | · | 63°F | 632 ft | Chicago |
|
La Moine River At Colmar, Il
1 day ago · USGS 05584500 |
56 cfs | 3.69 ft | · | 63°F | 511 ft | La Moine |
|
Macoupin Creek Near Kane, Il
1 day ago · USGS 05587000 |
54 cfs | 4.40 ft | · | 62°F | 445 ft | Macoupin |
|
Salt Fork Near St. Joseph, Il
1 day ago · USGS 03336900 |
54 cfs | 3.32 ft | · | 61°F | 661 ft | Vermilion |
|
W Branch Du Page River Nr West Chicago, Il
1 day ago · USGS 05539900 |
54 cfs | 4.32 ft | · | 61°F | 723 ft | Des Plaines |
|
North Branch Chicago River At Deerfield, Il
1 day ago · USGS 05534500 |
51 cfs | 5.68 ft | · | 63°F | 642 ft | Chicago |
|
Spring Brook At 87th Street Near Naperville, Il
1 day ago · USGS 05540275 |
51 cfs | 4.84 ft | · | 61°F | 652 ft | Des Plaines |
|
Shoal Creek Nr Pierron, Il
1 day ago · USGS 05593945 |
50 cfs | 43.00 ft | · | 64°F | 465 ft | Shoal |
|
St. Joseph Creek At U.S. Route 34 At Lisle, Il
1 day ago · USGS 05540195 |
48 cfs | 5.07 ft | · | 62°F | 673 ft | Des Plaines |
|
Shoal Creek Near Breese, Il
1 day ago · USGS 05594000 |
45 cfs | 1.30 ft | · | 65°F | 456 ft | Shoal |
|
Richland Creek Near Hecker, Il
1 day ago · USGS 05595200 |
40 cfs | 28.31 ft | · | 65°F | 403 ft | Lower Kaskaskia |
|
Poplar Creek At Elgin, Il
1 day ago · USGS 05550500 |
40 cfs | 1.69 ft | · | 60°F | 730 ft | Upper Fox |
|
Silver Creek Near Troy, Il
1 day ago · USGS 05594450 |
39 cfs | 4.91 ft | · | 65°F | 491 ft | Lower Kaskaskia |
|
Tinley Creek Near Palos Park, Il
1 day ago · USGS 05536500 |
38 cfs | 3.07 ft | · | 63°F | 608 ft | Chicago |
|
Salt Creek Near Rowell, Il
1 day ago · USGS 05578500 |
36 cfs | 9.23 ft | 77°F | 61°F | 634 ft | Salt |
|
Tyler Creek At Elgin, Il
1 day ago · USGS 05550300 |
35 cfs | 6.01 ft | · | 60°F | 751 ft | Upper Fox |
|
Ferson Creek Near St. Charles, Il
1 day ago · USGS 05551200 |
35 cfs | 1.81 ft | · | 60°F | 709 ft | Lower Fox |
|
Indian Creek Near Wyoming, Il
1 day ago · USGS 05568800 |
35 cfs | 9.77 ft | · | 59°F | 623 ft | Spoon |
|
Sinsinawa River Near Menominee, Il
1 day ago · USGS 05414820 |
34 cfs | 4.89 ft | · | 61°F | 645 ft | Apple-Plum |
|
Kaskaskia River At Cooks Mills, Il
1 day ago · USGS 05591200 |
30 cfs | 1.89 ft | · | 61°F | 641 ft | Upper Kaskaskia |
|
Buffalo Creek Near Wheeling, Il
1 day ago · USGS 05528500 |
28 cfs | 2.32 ft | · | 61°F | 667 ft | Des Plaines |
|
Sawmill Creek Near Lemont, Il
1 day ago · USGS 05533400 |
28 cfs | 9.11 ft | · | 63°F | 647 ft | Des Plaines |
|
Skokie River At Lake Forest, Il
1 day ago · USGS 05535000 |
27 cfs | 2.51 ft | · | 62°F | 664 ft | Chicago |
|
Embarras River Near Camargo, Il
1 day ago · USGS 03343400 |
27 cfs | 3.08 ft | · | 61°F | 644 ft | Embarras |
|
Salt Creek At Rolling Meadows, Il
1 day ago · USGS 05530990 |
27 cfs | 2.80 ft | · | 62°F | 694 ft | Des Plaines |
|
South Fork Sangamon River Nr Rochester, Il
1 day ago · USGS 05576000 |
27 cfs | 5.74 ft | 75°F | 61°F | 518 ft | South Fork Sangamon |
|
Lake Fork Near Cornland, Il
1 day ago · USGS 05579500 |
24 cfs | 3.72 ft | · | 61°F | 569 ft | Salt |
|
North Fork Embarras River Near Oblong, Il
1 day ago · USGS 03346000 |
24 cfs | 3.05 ft | · | 62°F | 498 ft | Embarras |
|
Nippersink Creek Above Wonder Lake, Il
1 day ago · USGS 05548105 |
21 cfs | 4.77 ft | · | 58°F | 806 ft | Upper Fox |
|
Mill Creek At Milan, Il
1 day ago · USGS 05448000 |
20 cfs | 1.83 ft | · | 61°F | 574 ft | Lower Rock |
|
Mill Creek At Old Mill Creek, Il
1 day ago · USGS 05527950 |
18 cfs | 6.24 ft | · | 60°F | 677 ft | Des Plaines |
|
Wf Of Nb Chicago River At Northbrook Il, Il
1 day ago · USGS 05535500 |
15 cfs | 1.17 ft | · | 63°F | 653 ft | Chicago |
|
Little Wabash River Near Effingham, Il
1 day ago · USGS 03378635 |
15 cfs | 10.57 ft | · | 62°F | 542 ft | Little Wabash |
|
Hurricane Creek Near Mulberry Grove, Il
1 day ago · USGS 05592800 |
15 cfs | 3.62 ft | · | 64°F | 551 ft | Middle Kaskaskia |
|
Skillet Fork At Wayne City, Il
1 day ago · USGS 03380500 |
14 cfs | 5.05 ft | · | 62°F | 387 ft | Skillet |
|
Bear Creek Near Marcelline, Il
1 day ago · USGS 05495500 |
13 cfs | 2.54 ft | · | 62°F | 523 ft | Bear-Wyaconda |
|
Mc Donald Creek Near Mount Prospect, Il
1 day ago · USGS 05529500 |
13 cfs | 1.37 ft | · | 62°F | 641 ft | Des Plaines |
|
Boone Creek Near Mc Henry, Il
1 day ago · USGS 05549000 |
12 cfs | 1.25 ft | · | 58°F | 779 ft | Upper Fox |
|
Farm Creek At Farmdale, Il
1 day ago · USGS 05560500 |
6 cfs | · | · | 60°F | 541 ft | Lower Illinois-Senachwine Lake |
|
Lake Fork At Atwood, Il
1 day ago · USGS 05590800 |
6 cfs | 1.75 ft | · | 61°F | 661 ft | Upper Kaskaskia |
|
South Branch Kishwaukee River At Dekalb, Il
1 day ago · USGS 05439000 |
6 cfs | 2.97 ft | · | 58°F | 846 ft | Kishwaukee |
|
Lusk Creek Near Eddyville, Il
1 day ago · USGS 03384450 |
6 cfs | 2.66 ft | · | 63°F | 388 ft | Lower Ohio-Bay |
|
Spring Creek At Springfield, Il
1 day ago · USGS 05577500 |
6 cfs | 1.92 ft | · | 62°F | 529 ft | Lower Sangamon |
|
Indian Creek At Wanda, Il
1 day ago · USGS 05588000 |
5 cfs | · | · | 64°F | 447 ft | Cahokia-Joachim |
|
Little Crooked Creek Near New Minden, Il
1 day ago · USGS 05593575 |
5 cfs | 5.05 ft | · | 65°F | 485 ft | Middle Kaskaskia |
|
East Fork Shoal Creek Near Coffeen, Il
1 day ago · USGS 05593900 |
5 cfs | 2.03 ft | · | 62°F | 590 ft | Shoal |
|
West Okaw River Near Lovington, Il
1 day ago · USGS 05591700 |
4 cfs | 3.26 ft | · | 60°F | 639 ft | Upper Kaskaskia |
|
Boneyard Creek At Lincoln Ave At Urbana, Il
1 day ago · USGS 03337100 |
4 cfs | 7.51 ft | · | 61°F | 714 ft | Vermilion |
|
Casey Fork At Mount Vernon, Il
1 day ago · USGS 05595820 |
4 cfs | 1.56 ft | · | 62°F | 441 ft | Big Muddy |
|
Robinson Creek Near Shelbyville, Il
1 day ago · USGS 05592050 |
3 cfs | 1.67 ft | · | 60°F | 616 ft | Upper Kaskaskia |
|
Bonpas Creek At Browns, Il
1 day ago · USGS 03378000 |
3 cfs | 1.41 ft | · | 63°F | 451 ft | Lower Wabash |
|
Weller Creek At Des Plaines, Il
1 day ago · USGS 05530000 |
3 cfs | · | · | 62°F | 648 ft | Des Plaines |
|
Whitley Creek Near Allenville, Il
1 day ago · USGS 05591550 |
3 cfs | 2.47 ft | · | 60°F | 625 ft | Upper Kaskaskia |
|
Rayse Creek Near Waltonville, Il
1 day ago · USGS 05595730 |
3 cfs | 1.12 ft | · | 63°F | 424 ft | Big Muddy |
|
Boneyard Creek At Urbana, Il
1 day ago · USGS 03337000 |
2 cfs | 10.34 ft | · | 61°F | 717 ft | Vermilion |
|
Crab Orchard Creek Near Marion, Il
1 day ago · USGS 05597500 |
1 cfs | · | · | 63°F | 430 ft | Big Muddy |
|
East Fork Kaskaskia River Near Sandoval, Il
1 day ago · USGS 05592900 |
1 cfs | 2.76 ft | · | 64°F | 491 ft | Middle Kaskaskia |
|
Hickory Creek Nr Brownstown, Il
1 day ago · USGS 05592575 |
0 cfs | 4.21 ft | · | 64°F | 507 ft | Middle Kaskaskia |
|
Fondulac Creek Near East Peoria, Il
1 day ago · USGS 05561500 |
0 cfs | 1.37 ft | · | 60°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 4, 2026, Illinois rivers are running at 70% of normal across 153 USGS streamgauges, and the Mississippi River At Thebes is reporting the highest discharge at 141,000 cfs. The full sortable gauge table is below.
Which Illinois river is running highest right now?
As of August 4, 2026, the highest discharge in Illinois is 141,000 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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