Flow report
Illinois River Levels & Streamflow
As of Sep 13, 2026, Illinois rivers are running at 68% of normal across 152 USGS gauges — the highest is 93,800 cfs on the Mississippi River At Thebes. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Illinois.
USGS gauges
152
State percent normal
68%
Paddle runs
0
Updated
Sep 13
Open the Illinois flow layer on the map
Every USGS streamgauge filtered to Illinois.
Open the map →
September
13
2026
Flow briefing
Streamflow levels across Illinois are currently 68% of normal, with the Mississippi River At Thebes reporting the highest discharge in the state at 93,800 cfs and a gauge stage of 6.77 ft.
Meanwhile, the Illinois River At Henry is seeing a spike today — up 32% 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
68%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Mississippi River At Thebes
93,800 cfs
Gauge stage 6.77 ft
Biggest 24h spike
Illinois River At Henry
+32%
Now 4,740 cfs
Network coverage
Gauges + rivers tracked
152 + 0
USGS gauges feeding 0 named rivers in Illinois.
Where every gauge actually sits
One dot per Illinois streamgauge, placed by its own percent of normal. The state average is a single line through all of it.
0%
50%
100% · normal
150%
200%+
Much below normalunder 50%
Below normal50–90%
Near normal90–110%
Above normal110–150%
Much above normalover 150%
Percent of normal compares today's discharge with the historical average for this calendar day. Tap any dot to open that gauge.
Illinois streamflow, three water years
Statewide percent of normal, every day since Sep 2023. The dotted line is normal.
68%
of normal today
+1pts
vs this day last year (67%)
310of 366
days below normal, past year
201%
3-year peak · Aug 2026 · above the axis
50%
100% normal
150%
Sep 2023
202420252026
Sep 12, 2026
799 daily readings from 148 reporting gauges. Percent of normal is today's statewide discharge against the historical average for the same calendar day — 100% is normal, not "good". The axis tops out at 160%: 7 readings above that — including the 201% peak in Aug 2026 — are drawn along the top edge, so a few flood days cannot flatten three years of everything else. The line breaks in 2 places where the record skips more than five days — those are gaps in reporting, not readings of zero.
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
1 day ago · USGS 07022000 |
96,200 cfs | 7.09 ft | · | 71°F | 321 ft | Upper Mississippi-Cape Girardeau |
|
Mississippi River At Chester, Il
1 day ago · USGS 07020500 |
95,100 cfs | 2.88 ft | · | 70°F | 358 ft | Upper Mississippi-Cape Girardeau |
|
Wabash River At Mt. Carmel, Il
1 day ago · USGS 03377500 |
18,100 cfs | 6.39 ft | · | 69°F | 391 ft | Lower Wabash |
|
Illinois River At Valley City, Il
1 day ago · USGS 05586100 |
8,030 cfs | 2.58 ft | · | 65°F | 433 ft | Lower Illinois |
|
Illinois River At Kingston Mines, Il
1 day ago · USGS 05568500 |
5,650 cfs | 3.33 ft | · | 65°F | 441 ft | Lower Illinois-Lake Chautauqua |
|
Illinois River At Henry, Il
1 day ago · USGS 05558300 |
5,240 cfs | 14.53 ft | 80°F | 63°F | 440 ft | Lower Illinois-Senachwine Lake |
|
Illinois River At Marseilles, Il
1 day ago · USGS 05543500 |
4,070 cfs | 11.24 ft | · | 63°F | 459 ft | Upper Illinois |
|
Rock River Near Joslin, Il
1 day ago · USGS 05446500 |
3,450 cfs | 4.84 ft | 34°F | 64°F | 588 ft | Lower Rock |
|
Rock River At Como, Il
1 day ago · USGS 05443500 |
3,440 cfs | 3.35 ft | · | 62°F | 618 ft | Lower Rock |
|
Rock River At Byron, Il
1 day ago · USGS 05440700 |
3,140 cfs | 5.56 ft | 75°F | 62°F | 677 ft | Lower Rock |
|
Rock River At Rockton, Il
1 day ago · USGS 05437500 |
2,580 cfs | 3.69 ft | · | 62°F | 712 ft | Lower Rock |
|
Kankakee River Near Wilmington, Il
1 day ago · USGS 05527500 |
1,280 cfs | 1.21 ft | 75°F | 64°F | 511 ft | Kankakee |
|
Pecatonica River Nr Shirland, Il
1 day ago · USGS 05437050 |
1,110 cfs | 4.24 ft | · | 62°F | 718 ft | Pecatonica |
|
Fox River At Dayton, Il
1 day ago · USGS 05552500 |
1,070 cfs | 5.83 ft | · | 63°F | 472 ft | Lower Fox |
|
Kankakee River At Momence, Il
1 day ago · USGS 05520500 |
942 cfs | 1.51 ft | · | 63°F | 610 ft | Kankakee |
|
Fox River At Montgomery, Il
1 day ago · USGS 05551540 |
818 cfs | 11.36 ft | · | 62°F | 613 ft | Lower Fox |
|
Sangamon River Near Oakford, Il
1 day ago · USGS 05583000 |
798 cfs | 3.89 ft | 81°F | 64°F | 457 ft | Lower Sangamon |
|
Fox River At South Elgin, Il
1 day ago · USGS 05551000 |
759 cfs | 12.43 ft | · | 62°F | 696 ft | Lower Fox |
|
Pecatonica River At Freeport, Il
1 day ago · USGS 05435500 |
690 cfs | 3.93 ft | · | 63°F | 754 ft | Pecatonica |
|
Kaskaskia River At New Athens, Il
1 day ago · USGS 05595000 |
683 cfs | 68.77 ft | 73°F | 66°F | 403 ft | Lower Kaskaskia |
|
Fox River At Algonquin (Tailwater), Il
1 day ago · USGS 05550001 |
615 cfs | 5.27 ft | 32°F | 62°F | 727 ft | Upper Fox |
|
Spoon River At Seville, Il
1 day ago · USGS 05570000 |
357 cfs | 6.21 ft | 53°F | 64°F | 498 ft | Spoon |
|
Vermilion River Near Danville, Il
1 day ago · USGS 03339000 |
356 cfs | 3.08 ft | 64°F | 66°F | 517 ft | Vermilion |
|
Embarras River At Lawrenceville, Il
1 day ago · USGS 03346500 |
332 cfs | 17.27 ft | 61°F | 68°F | 424 ft | Embarras |
|
Green River Near Geneseo, Il
1 day ago · USGS 05447500 |
330 cfs | 2.51 ft | 58°F | 64°F | 586 ft | Green |
|
Des Plaines River At Riverside, Il
1 day ago · USGS 05532500 |
302 cfs | 2.09 ft | · | 66°F | 598 ft | Des Plaines |
|
Sangamon River At Petersburg, Il
1 day ago · USGS 05578000 |
277 cfs | 4.75 ft | 79°F | 65°F | 489 ft | Lower Sangamon |
|
Kaskaskia River Near Venedy Station, Il
1 day ago · USGS 05594100 |
274 cfs | 2.24 ft | · | 67°F | 395 ft | Lower Kaskaskia |
|
Spoon River At London Mills, Il
1 day ago · USGS 05569500 |
259 cfs | 2.74 ft | 77°F | 63°F | 557 ft | Spoon |
|
Du Page River At Shorewood, Il
1 day ago · USGS 05540500 |
242 cfs | 10.40 ft | · | 63°F | 566 ft | Des Plaines |
|
Kishwaukee River Near Perryville, Il
1 day ago · USGS 05440000 |
222 cfs | 5.38 ft | · | 62°F | 701 ft | Kishwaukee |
|
Des Plaines River Near Des Plaines, Il
1 day ago · USGS 05529000 |
205 cfs | 9.47 ft | · | 65°F | 625 ft | Des Plaines |
|
Salt Creek Near Greenview, Il
1 day ago · USGS 05582000 |
191 cfs | 1.29 ft | 83°F | 65°F | 481 ft | Salt |
|
Mackinaw River Near Green Valley, Il
1 day ago · USGS 05568000 |
190 cfs | 14.08 ft | 75°F | 65°F | 501 ft | Mackinaw |
|
Kaskaskia River At Vandalia, Il
1 day ago · USGS 05592500 |
190 cfs | 3.30 ft | · | 66°F | 537 ft | Middle Kaskaskia |
|
Henderson Creek Near Oquawka, Il
1 day ago · USGS 05469000 |
184 cfs | 14.27 ft | · | 65°F | 611 ft | Flint-Henderson |
|
Little Wabash River At Carmi, Il
1 day ago · USGS 03381500 |
183 cfs | 3.10 ft | · | 71°F | 419 ft | Little Wabash |
|
Edwards River Near New Boston, Il
1 day ago · USGS 05466500 |
181 cfs | 13.27 ft | · | 64°F | 561 ft | Flint-Henderson |
|
Sangamon River At Riverton, Il
1 day ago · USGS 05576500 |
177 cfs | 2.78 ft | · | 66°F | 519 ft | Lower Sangamon |
|
Des Plaines River Near Gurnee, Il
1 day ago · USGS 05528000 |
166 cfs | 3.17 ft | · | 63°F | 664 ft | Des Plaines |
|
Kaskaskia River At Carlyle, Il
1 day ago · USGS 05593000 |
164 cfs | 6.12 ft | · | 68°F | 413 ft | Middle Kaskaskia |
|
Embarras River At Ste. Marie, Il
1 day ago · USGS 03345500 |
142 cfs | 1.26 ft | · | 67°F | 499 ft | Embarras |
|
Iroquois River Near Chebanse, Il
1 day ago · USGS 05526000 |
137 cfs | 2.55 ft | · | 64°F | 600 ft | Iroquois |
|
Kishwaukee River At Belvidere, Il
1 day ago · USGS 05438500 |
103 cfs | 1.07 ft | · | 62°F | 740 ft | Kishwaukee |
|
Big Muddy River At Rte 127 At Murphysboro, Il
1 day ago · USGS 05599490 |
103 cfs | 3.39 ft | 82°F | 71°F | 357 ft | Big Muddy |
|
Pope Creek Near Keithsburg, Il
1 day ago · USGS 05467000 |
92 cfs | 19.86 ft | · | 64°F | 550 ft | Flint-Henderson |
|
La Moine River At Ripley, Il
1 day ago · USGS 05585000 |
84 cfs | 5.12 ft | · | 64°F | 467 ft | La Moine |
|
Salt Creek At Western Springs, Il
1 day ago · USGS 05531500 |
82 cfs | 2.23 ft | · | 66°F | 634 ft | Des Plaines |
|
Sangamon River At Monticello, Il
1 day ago · USGS 05572000 |
81 cfs | 5.24 ft | 77°F | 65°F | 646 ft | Upper Sangamon |
|
Big Muddy River At Plumfield, Il
1 day ago · USGS 05597000 |
80 cfs | 2.69 ft | · | 70°F | 379 ft | Big Muddy |
|
Des Plaines River At Russell, Il
1 day ago · USGS 05527800 |
79 cfs | 5.02 ft | · | 63°F | 667 ft | Des Plaines |
|
Kaskaskia River Near Cowden, Il
1 day ago · USGS 05592100 |
74 cfs | 2.47 ft | · | 65°F | 553 ft | Upper Kaskaskia |
|
Nippersink Creek Near Spring Grove, Il
1 day ago · USGS 05548280 |
72 cfs | 3.97 ft | · | 61°F | 754 ft | Upper Fox |
|
Mackinaw River Near Congerville, Il
1 day ago · USGS 05567500 |
68 cfs | 1.16 ft | 47°F | 65°F | 611 ft | Mackinaw |
|
East Branch Du Page River At Bolingbrook, Il
1 day ago · USGS 05540250 |
67 cfs | 14.74 ft | · | 64°F | 640 ft | Des Plaines |
|
Kaskaskia River At Shelbyville, Il
1 day ago · USGS 05592000 |
67 cfs | 6.39 ft | · | 65°F | 568 ft | Upper Kaskaskia |
|
West Branch Du Page River Near Naperville, Il
1 day ago · USGS 05540130 |
61 cfs | 4.13 ft | · | 63°F | 637 ft | Des Plaines |
|
Apple River Near Hanover, Il
1 day ago · USGS 05419000 |
60 cfs | 4.06 ft | · | 65°F | 596 ft | Apple-Plum |
|
Silver Creek Near Freeburg, Il
1 day ago · USGS 05594800 |
59 cfs | · | · | 67°F | 418 ft | Lower Kaskaskia |
|
Little Calumet River At South Holland, Il
1 day ago · USGS 05536290 |
55 cfs | 5.31 ft | · | 65°F | 596 ft | Chicago |
|
La Moine River At Colmar, Il
1 day ago · USGS 05584500 |
53 cfs | 3.81 ft | · | 64°F | 511 ft | La Moine |
|
Middle Fork Vermilion River Above Oakwood, Il
1 day ago · USGS 03336645 |
52 cfs | 1.00 ft | · | 66°F | 560 ft | Vermilion |
|
Richland Creek Near Hecker, Il
1 day ago · USGS 05595200 |
51 cfs | 28.26 ft | · | 66°F | 403 ft | Lower Kaskaskia |
|
Iroquois River At Iroquois, Il
1 day ago · USGS 05525000 |
50 cfs | 4.53 ft | · | 63°F | 638 ft | Iroquois |
|
Bear Creek Near Marcelline, Il
1 day ago · USGS 05495500 |
50 cfs | 2.93 ft | · | 67°F | 523 ft | Bear-Wyaconda |
|
Elkhorn Creek Near Penrose, Il
1 day ago · USGS 05444000 |
48 cfs | 2.82 ft | · | 62°F | 669 ft | Lower Rock |
|
Hickory Creek At Joliet, Il
1 day ago · USGS 05539000 |
44 cfs | 10.76 ft | · | 64°F | 535 ft | Des Plaines |
|
West Br Du Page River Near Warrenville, Il
1 day ago · USGS 05540095 |
40 cfs | 7.63 ft | · | 63°F | 688 ft | Des Plaines |
|
Salt Creek At Elmhurst, Il
1 day ago · USGS 05531300 |
39 cfs | 5.07 ft | · | 65°F | 670 ft | Des Plaines |
|
E Br Du Page River Near Downers Grove, Il
1 day ago · USGS 05540160 |
37 cfs | 12.13 ft | · | 64°F | 675 ft | Des Plaines |
|
Salt Fork Near St. Joseph, Il
1 day ago · USGS 03336900 |
37 cfs | 3.26 ft | · | 65°F | 661 ft | Vermilion |
|
Shoal Creek Near Breese, Il
1 day ago · USGS 05594000 |
34 cfs | 1.10 ft | · | 67°F | 456 ft | Shoal |
|
Thorn Creek At Glenwood, Il
1 day ago · USGS 05536215 |
33 cfs | 2.59 ft | · | 64°F | 628 ft | Chicago |
|
Vermilion River At Pontiac, Il
1 day ago · USGS 05554500 |
31 cfs | 2.80 ft | 77°F | 64°F | 661 ft | Vermilion |
|
Sangamon River At Fisher, Il
1 day ago · USGS 05570910 |
30 cfs | 4.94 ft | 82°F | 65°F | 693 ft | Upper Sangamon |
|
Salt Creek Near Rowell, Il
1 day ago · USGS 05578500 |
30 cfs | 9.32 ft | 77°F | 66°F | 634 ft | Salt |
|
South Fork Saline River Nr Carrier Mills, Il
1 day ago · USGS 03382100 |
28 cfs | 2.63 ft | · | 70°F | 415 ft | Saline |
|
Little Wabash River Below Clay City, Il
1 day ago · USGS 03379500 |
28 cfs | 4.19 ft | · | 67°F | 477 ft | Little Wabash |
|
Blackberry Creek Near Yorkville, Il
1 day ago · USGS 05551700 |
28 cfs | 3.20 ft | · | 62°F | 617 ft | Lower Fox |
|
Kickapoo Creek At Waynesville, Il
1 day ago · USGS 05580000 |
28 cfs | 2.61 ft | · | 65°F | 635 ft | Salt |
|
Thorn Creek At Thornton, Il
1 day ago · USGS 05536275 |
27 cfs | 2.70 ft | · | 64°F | 603 ft | Chicago |
|
South Branch Kishwaukee River Nr Fairdale Il, Il
1 day ago · USGS 05439500 |
26 cfs | 1.88 ft | · | 62°F | 736 ft | Kishwaukee |
|
North Branch Chicago River At Niles, Il
1 day ago · USGS 05536000 |
25 cfs | · | · | 66°F | 608 ft | Chicago |
|
Sinsinawa River Near Menominee, Il
1 day ago · USGS 05414820 |
25 cfs | 4.75 ft | · | 65°F | 645 ft | Apple-Plum |
|
Sugar Creek Near Bloomington, Il
1 day ago · USGS 05580950 |
24 cfs | · | · | 65°F | 749 ft | Salt |
|
Sugar Creek At Milford, Il
1 day ago · USGS 05525500 |
22 cfs | 2.83 ft | · | 64°F | 644 ft | Iroquois |
|
Cahokia Creek At Edwardsville, Il
1 day ago · USGS 05587900 |
20 cfs | 3.34 ft | · | 67°F | 456 ft | Cahokia-Joachim |
|
Kaskaskia River At Cooks Mills, Il
1 day ago · USGS 05591200 |
20 cfs | 1.52 ft | · | 66°F | 641 ft | Upper Kaskaskia |
|
Shoal Creek Nr Pierron, Il
1 day ago · USGS 05593945 |
18 cfs | 42.28 ft | · | 66°F | 465 ft | Shoal |
|
Nippersink Creek Above Wonder Lake, Il
1 day ago · USGS 05548105 |
17 cfs | 4.72 ft | · | 62°F | 806 ft | Upper Fox |
|
Blackberry Creek Near Montgomery, Il
1 day ago · USGS 05551675 |
17 cfs | 3.51 ft | · | 62°F | 661 ft | Lower Fox |
|
Indian Creek Near Wyoming, Il
1 day ago · USGS 05568800 |
16 cfs | 9.43 ft | · | 64°F | 623 ft | Spoon |
|
Mill Creek At Old Mill Creek, Il
1 day ago · USGS 05527950 |
16 cfs | 6.06 ft | · | 63°F | 677 ft | Des Plaines |
|
Vermilion River Near Leonore, Il
1 day ago · USGS 05555300 |
15 cfs | 3.20 ft | 76°F | 63°F | 535 ft | Vermilion |
|
Bonpas Creek At Browns, Il
1 day ago · USGS 03378000 |
15 cfs | 2.08 ft | · | 71°F | 451 ft | Lower Wabash |
|
W Branch Du Page River Nr West Chicago, Il
1 day ago · USGS 05539900 |
13 cfs | 3.55 ft | · | 63°F | 723 ft | Des Plaines |
|
Addison Creek At Bellwood, Il
1 day ago · USGS 05532000 |
12 cfs | 1.44 ft | · | 66°F | 627 ft | Des Plaines |
|
South Fork Sangamon River Nr Rochester, Il
1 day ago · USGS 05576000 |
12 cfs | 5.33 ft | 75°F | 66°F | 518 ft | South Fork Sangamon |
|
Ferson Creek Near St. Charles, Il
1 day ago · USGS 05551200 |
11 cfs | 1.37 ft | · | 62°F | 709 ft | Lower Fox |
|
Flag Creek Near Willow Springs, Il
1 day ago · USGS 05533000 |
11 cfs | 3.26 ft | · | 65°F | 610 ft | Des Plaines |
|
Macoupin Creek Near Kane, Il
1 day ago · USGS 05587000 |
9 cfs | 3.83 ft | · | 64°F | 445 ft | Macoupin |
|
Mill Creek At Milan, Il
1 day ago · USGS 05448000 |
9 cfs | 1.60 ft | · | 67°F | 574 ft | Lower Rock |
|
Sangamon River At Rt 48 At Decatur, Il
1 day ago · USGS 05573540 |
9 cfs | 2.25 ft | 75°F | 66°F | 618 ft | Upper Sangamon |
|
Hurricane Creek Near Mulberry Grove, Il
1 day ago · USGS 05592800 |
8 cfs | 3.51 ft | · | 66°F | 551 ft | Middle Kaskaskia |
|
Boone Creek Near Mc Henry, Il
1 day ago · USGS 05549000 |
8 cfs | · | · | 62°F | 779 ft | Upper Fox |
|
Lake Fork Near Cornland, Il
1 day ago · USGS 05579500 |
8 cfs | 3.36 ft | · | 66°F | 569 ft | Salt |
|
Deer Creek Near Chicago Heights, Il
1 day ago · USGS 05536235 |
7 cfs | 3.22 ft | · | 64°F | 628 ft | Chicago |
|
Big Bureau Creek At Princeton, Il
1 day ago · USGS 05556500 |
6 cfs | 2.65 ft | · | 63°F | 603 ft | Lower Illinois-Senachwine Lake |
|
Tyler Creek At Elgin, Il
1 day ago · USGS 05550300 |
6 cfs | 5.49 ft | · | 62°F | 751 ft | Upper Fox |
|
Wf Of Nb Chicago River At Northbrook Il, Il
1 day ago · USGS 05535500 |
6 cfs | · | · | 64°F | 653 ft | Chicago |
|
Embarras River Near Camargo, Il
1 day ago · USGS 03343400 |
5 cfs | 2.67 ft | · | 66°F | 644 ft | Embarras |
|
Casey Fork At Mount Vernon, Il
1 day ago · USGS 05595820 |
5 cfs | 1.79 ft | · | 70°F | 441 ft | Big Muddy |
|
Little Wabash River Near Effingham, Il
1 day ago · USGS 03378635 |
4 cfs | 10.52 ft | · | 66°F | 542 ft | Little Wabash |
|
Tinley Creek Near Palos Park, Il
1 day ago · USGS 05536500 |
4 cfs | 2.52 ft | · | 65°F | 608 ft | Chicago |
|
Mazon River Near Coal City, Il
1 day ago · USGS 05542000 |
4 cfs | · | · | 63°F | 529 ft | Upper Illinois |
|
Skokie River Near Highland Park, Il
1 day ago · USGS 05535070 |
3 cfs | 2.65 ft | · | 65°F | 632 ft | Chicago |
|
Little Crooked Creek Near New Minden, Il
1 day ago · USGS 05593575 |
3 cfs | 5.09 ft | · | 67°F | 485 ft | Middle Kaskaskia |
|
Poplar Creek At Elgin, Il
1 day ago · USGS 05550500 |
3 cfs | · | · | 63°F | 730 ft | Upper Fox |
|
Butterfield Creek At Flossmoor, Il
1 day ago · USGS 05536255 |
3 cfs | 3.89 ft | · | 64°F | 635 ft | Chicago |
|
North Branch Chicago River At Deerfield, Il
1 day ago · USGS 05534500 |
3 cfs | 4.39 ft | · | 65°F | 642 ft | Chicago |
|
Cache River At Forman, Il
1 day ago · USGS 03612000 |
3 cfs | 8.53 ft | · | 71°F | 367 ft | Lower Ohio |
|
Boneyard Creek At Lincoln Ave At Urbana, Il
1 day ago · USGS 03337100 |
2 cfs | 7.50 ft | · | 66°F | 714 ft | Vermilion |
|
Long Run Near Lemont, Il
1 day ago · USGS 05537500 |
2 cfs | · | · | 64°F | 641 ft | Des Plaines |
|
Boneyard Creek At Urbana, Il
1 day ago · USGS 03337000 |
2 cfs | 10.29 ft | · | 66°F | 717 ft | Vermilion |
|
Farm Creek At Farmdale, Il
1 day ago · USGS 05560500 |
2 cfs | · | · | 65°F | 541 ft | Lower Illinois-Senachwine Lake |
|
Silver Creek Near Troy, Il
1 day ago · USGS 05594450 |
2 cfs | 3.72 ft | · | 67°F | 491 ft | Lower Kaskaskia |
|
Salt Creek At Rolling Meadows, Il
1 day ago · USGS 05530990 |
2 cfs | 2.12 ft | · | 64°F | 694 ft | Des Plaines |
|
East Fork Shoal Creek Near Coffeen, Il
1 day ago · USGS 05593900 |
2 cfs | 1.85 ft | · | 65°F | 590 ft | Shoal |
|
Skokie River At Lake Forest, Il
1 day ago · USGS 05535000 |
2 cfs | 1.91 ft | · | 64°F | 664 ft | Chicago |
|
Midlothian Creek At Oak Forest, Il
1 day ago · USGS 05536340 |
1 cfs | 1.53 ft | · | 65°F | 629 ft | Chicago |
|
Kress Creek At West Chicago, Il
1 day ago · USGS 05540060 |
1 cfs | 3.90 ft | · | 63°F | 706 ft | Des Plaines |
|
South Branch Kishwaukee River At Dekalb, Il
1 day ago · USGS 05439000 |
1 cfs | 2.60 ft | · | 62°F | 846 ft | Kishwaukee |
|
Spring Brook At 87th Street Near Naperville, Il
1 day ago · USGS 05540275 |
1 cfs | 2.65 ft | · | 63°F | 652 ft | Des Plaines |
|
Spring Creek At Springfield, Il
1 day ago · USGS 05577500 |
1 cfs | 1.61 ft | · | 66°F | 529 ft | Lower Sangamon |
|
Buffalo Creek Near Wheeling, Il
1 day ago · USGS 05528500 |
1 cfs | 1.35 ft | · | 64°F | 667 ft | Des Plaines |
|
Mill Creek Near Batavia, Il
1 day ago · USGS 05551330 |
1 cfs | 2.01 ft | · | 62°F | 690 ft | Lower Fox |
|
Sawmill Creek Near Lemont, Il
1 day ago · USGS 05533400 |
1 cfs | 8.16 ft | · | 64°F | 647 ft | Des Plaines |
|
Weller Creek At Des Plaines, Il
1 day ago · USGS 05530000 |
1 cfs | · | · | 65°F | 648 ft | Des Plaines |
|
Mc Donald Creek Near Mount Prospect, Il
1 day ago · USGS 05529500 |
1 cfs | · | · | 64°F | 641 ft | Des Plaines |
|
North Fork Embarras River Near Oblong, Il
1 day ago · USGS 03346000 |
1 cfs | 2.07 ft | · | 67°F | 498 ft | Embarras |
|
Indian Creek At Wanda, Il
1 day ago · USGS 05588000 |
1 cfs | · | · | 67°F | 447 ft | Cahokia-Joachim |
|
Lake Fork At Atwood, Il
1 day ago · USGS 05590800 |
0 cfs | 1.38 ft | · | 66°F | 661 ft | Upper Kaskaskia |
|
Crab Orchard Creek Near Marion, Il
1 day ago · USGS 05597500 |
0 cfs | · | · | 70°F | 430 ft | Big Muddy |
|
St. Joseph Creek At U.S. Route 34 At Lisle, Il
1 day ago · USGS 05540195 |
0 cfs | 4.03 ft | · | 64°F | 673 ft | Des Plaines |
|
Lusk Creek Near Eddyville, Il
1 day ago · USGS 03384450 |
0 cfs | 2.02 ft | · | 68°F | 388 ft | Lower Ohio-Bay |
|
Rayse Creek Near Waltonville, Il
1 day ago · USGS 05595730 |
0 cfs | 1.36 ft | · | 70°F | 424 ft | Big Muddy |
|
Hickory Creek Nr Brownstown, Il
1 day ago · USGS 05592575 |
0 cfs | 3.89 ft | · | 66°F | 507 ft | Middle Kaskaskia |
|
Skillet Fork At Wayne City, Il
2 days ago · USGS 03380500 |
0 cfs | 1.83 ft | · | 69°F | 387 ft | Skillet |
|
Fondulac Creek Near East Peoria, Il
1 day ago · USGS 05561500 |
0 cfs | 1.37 ft | · | 65°F | 521 ft | Lower Illinois-Senachwine Lake |
|
Whitley Creek Near Allenville, Il
1 day ago · USGS 05591550 |
0 cfs | 2.19 ft | · | 65°F | 625 ft | Upper Kaskaskia |
|
West Okaw River Near Lovington, Il
1 day ago · USGS 05591700 |
0 cfs | 2.65 ft | · | 65°F | 639 ft | Upper Kaskaskia |
|
East Fork Kaskaskia River Near Sandoval, Il
1 day ago · USGS 05592900 |
0 cfs | 2.44 ft | · | 67°F | 491 ft | Middle Kaskaskia |
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Flow report FAQ
About Illinois streamflow
What are river levels like in Illinois right now?
As of September 13, 2026, Illinois rivers are running at 68% of normal across 152 USGS streamgauges, and the Mississippi River At Thebes is reporting the highest discharge at 93,800 cfs. The full sortable gauge table is below.
Which Illinois river is running highest right now?
As of September 13, 2026, the highest discharge in Illinois is 93,800 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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