Wyoming River Levels & Streamflow
As of Sep 4, 2026, Wyoming rivers are running at 125% of normal across 76 USGS gauges — the highest is 6,450 cfs on the Snake River Ab Reservoir Nr Alpine Wy. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Wyoming.
Streamflow levels across Wyoming are currently 125% of normal, with the Snake River Ab Reservoir Nr Alpine Wy reporting the highest discharge in the state at 6,450 cfs and a gauge stage of 5.53 ft.
Meanwhile, the Green River Near La Barge is seeing a spike today — up 12% 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 Wyoming's named rivers.
Active weather warnings for Wyoming
A Red Flag Warning remains in effect across multiple counties in Wyoming until 9:00 PM MDT on September 4th, with critical fire weather conditions developing. Central and North Central Wyoming, including Fremont, Natrona, Big Horn, Hot Springs, Johnson, Park, Washakie, and Sweetwater counties, face dangerous fire conditions due to unseasonably warm temperatures in the mid-80s to lower 90s, extremely low humidity levels between 10-15%, and strong southwest winds gusting up to 35 mph. Residents in areas near Riverton, Casper, Sheridan, and Cody should exercise extreme caution with any ignition sources and monitor local fire conditions closely. Any fires that ignite could spread rapidly with erratic behavior due to the combination of dry air, heat, and gusty winds.
State-wide streamflow overview
The Wyoming 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
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Gauge stage 5.53 ft
Biggest 24h spike
Now 794 cfs
Network coverage
USGS gauges feeding 0 named rivers in Wyoming.
Where every gauge actually sits
One dot per Wyoming streamgauge, placed by its own percent of normal. The state average is a single line through all of it.
Percent of normal compares today's discharge with the historical average for this calendar day. Tap any dot to open that gauge.
Wyoming streamflow, three water years
Statewide percent of normal, every day since Aug 2023. The dotted line is normal.
799 daily readings from 75 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 line breaks in 2 places where the record skips more than five days — those are gaps in reporting, not readings of zero.
Wyoming USGS streamgauges
Every USGS gauge Snoflo tracks in Wyoming. 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 |
|---|---|---|---|---|---|---|
|
Snake River Ab Reservoir Nr Alpine Wy, Wy
11 hours ago · USGS 13022500 |
6,430 cfs | 5.52 ft | 61°F | 47°F | 5,696 ft | Greys-Hobock |
|
Snake River Bl Flat Creek Nr Jackson Wy, Wy
11 hours ago · USGS 13018750 |
6,280 cfs | 4.22 ft | 59°F | 44°F | 5,930 ft | Greys-Hobock |
|
Snake River At Moose, Wy
12 hours ago · USGS 13013650 |
5,470 cfs | 11.26 ft | 59°F | 40°F | 6,443 ft | Snake Headwaters |
|
Snake River Nr Moran Wy, Wy
11 hours ago · USGS 13011000 |
5,160 cfs | 7.34 ft | 60°F | 41°F | 6,732 ft | Snake Headwaters |
|
Yellowstone River At Yellowstone Lk Outlet Ynp, Wy
11 hours ago · USGS 06186500 |
1,030 cfs | 3.58 ft | · | 43°F | 7,731 ft | Yellowstone Headwaters |
|
Green River Near La Barge, Wy
12 hours ago · USGS 09209400 |
755 cfs | 5.02 ft | 32°F | 44°F | 6,531 ft | Upper Green |
|
Green River Below Fontenelle Reservoir, Wy
12 hours ago · USGS 09211200 |
742 cfs | 11.19 ft | 64°F | 47°F | 6,401 ft | Upper Green-Slate |
|
Shoshone River Near Lovell, Wy
12 hours ago · USGS 06285100 |
680 cfs | 5.11 ft | 64°F | 54°F | 3,853 ft | Shoshone |
|
Bighorn River At Kane, Wy
11 hours ago · USGS 06279500 |
667 cfs | 1.71 ft | · | 60°F | 3,642 ft | Big Horn Lake |
|
Green River Near Green River, Wy
11 hours ago · USGS 09217000 |
577 cfs | · | 65°F | 53°F | 6,070 ft | Bitter |
|
Bighorn River At Basin, Wy
1 day ago · USGS 06274300 |
535 cfs | 2.90 ft | · | 55°F | 3,831 ft | Upper Bighorn |
|
North Platte River At Orin, Wy
11 hours ago · USGS 06652000 |
432 cfs | 3.24 ft | · | 58°F | 4,651 ft | Glendo Reservoir |
|
Wind River Above Red Creek, Wy
11 hours ago · USGS 06220800 |
397 cfs | 3.11 ft | · | 47°F | 6,406 ft | Upper Wind |
|
Green River At Warren Bridge, Wy
11 hours ago · USGS 09188500 |
392 cfs | 1.96 ft | · | 42°F | 7,477 ft | Upper Green |
|
Wind River Near Kinnear, Wy
12 hours ago · USGS 06227600 |
374 cfs | 3.52 ft | 35°F | 53°F | 5,287 ft | Upper Wind |
|
Salt River Ab Reservoir Nr Etna Wy, Wy
11 hours ago · USGS 13027500 |
363 cfs | 1.76 ft | · | 44°F | 5,694 ft | Salt |
|
New Fork River Near Big Piney, Wy
12 hours ago · USGS 09205000 |
351 cfs | 2.66 ft | 114°F | 42°F | 6,807 ft | Upper Green |
|
Bull Lake Creek Above Bull Lake, Wy
11 hours ago · USGS 06224000 |
349 cfs | 3.26 ft | 48°F | 53°F | 5,889 ft | Upper Wind |
|
North Fork Shoshone River At Wapiti, Wy
11 hours ago · USGS 06279940 |
287 cfs | 3.35 ft | · | 53°F | 5,564 ft | North Fork Shoshone |
|
Gros Ventre River At Kelly Wy, Wy
12 hours ago · USGS 13014500 |
284 cfs | 4.18 ft | 57°F | 44°F | 6,650 ft | Gros Ventre |
|
Dinwoody Creek Above Lakes, Wy
11 hours ago · USGS 06221400 |
278 cfs | 3.24 ft | · | 48°F | 6,526 ft | Upper Wind |
|
Greys River Ab Reservoir Nr Alpine Wy, Wy
11 hours ago · USGS 13023000 |
277 cfs | 1.42 ft | · | 47°F | 5,704 ft | Greys-Hobock |
|
Wind River Ab Boysen Reservoir, Wy
11 hours ago · USGS 06236100 |
263 cfs | 1.99 ft | 67°F | 61°F | 4,772 ft | Upper Wind |
|
Fivemile Creek Near Shoshoni, Wy
12 hours ago · USGS 06253000 |
258 cfs | 3.16 ft | 63°F | 59°F | 4,766 ft | Lower Wind |
|
Fish Creek At Wilson, Wy
11 hours ago · USGS 13016450 |
250 cfs | 2.85 ft | 54°F | 44°F | 6,162 ft | Greys-Hobock |
|
Snake River Ab Jackson Lake At Flagg Ranch Wy, Wy
11 hours ago · USGS 13010065 |
234 cfs | 2.33 ft | 59°F | 40°F | 6,818 ft | Snake Headwaters |
|
Buffalo Fork Ab Lava Creek Nr Moran Wy, Wy
11 hours ago · USGS 13011900 |
231 cfs | 1.15 ft | 54°F | 40°F | 6,788 ft | Snake Headwaters |
|
Lamar River Nr Tower Falls Ranger Station Ynp, Wy
11 hours ago · USGS 06188000 |
203 cfs | 1.17 ft | 56°F | 43°F | 6,021 ft | Yellowstone Headwaters |
|
Firehole River Near West Yellowstone Mt, Wy
12 hours ago · USGS 06036905 |
192 cfs | 2.90 ft | 66°F | 39°F | 7,070 ft | Madison |
|
Pine Creek Above Fremont Lake, Wy
11 hours ago · USGS 09196500 |
188 cfs | 3.42 ft | 56°F | 49°F | 7,460 ft | New Fork |
|
Little Wind River Near Riverton, Wy
11 hours ago · USGS 06235500 |
118 cfs | 1.80 ft | · | 55°F | 4,913 ft | Little Wind |
|
Blacks Fork Near Millburne, Wy
11 hours ago · USGS 09218500 |
103 cfs | 2.76 ft | · | 41°F | 8,509 ft | Blacks Fork |
|
Gros Ventre River At Zenith Wy, Wy
11 hours ago · USGS 13015000 |
101 cfs | 18.14 ft | · | 40°F | 6,318 ft | Gros Ventre |
|
Wind River Near Dubois, Wy
11 hours ago · USGS 06218500 |
99 cfs | 2.40 ft | · | 44°F | 7,204 ft | Upper Wind |
|
N Platte Riv Ab Seminoe Reservoir, Wy
11 hours ago · USGS 06630000 |
86 cfs | 2.28 ft | · | 52°F | 6,416 ft | Upper North Platte |
|
Bear River Below Smiths Fork, Wy
11 hours ago · USGS 10038000 |
82 cfs | 2.42 ft | · | 46°F | 6,134 ft | Central Bear |
|
Smiths Fork Near Border, Wy
11 hours ago · USGS 10032000 |
81 cfs | 1.16 ft | · | 50°F | 6,710 ft | Central Bear |
|
North Platte River Below Whalen Diversion Dam, Wy
12 hours ago · USGS 06657000 |
80 cfs | 4.82 ft | · | 61°F | 4,265 ft | Glendo Reservoir |
|
Gibbon River At Madison Jct, Wy
12 hours ago · USGS 06037100 |
76 cfs | 4.70 ft | 61°F | 41°F | 6,801 ft | Madison |
|
Wind River At Riverton, Wy
12 hours ago · USGS 06228000 |
66 cfs | 2.43 ft | · | 55°F | 4,914 ft | Upper Wind |
|
Bear River At Evanston, Wy
12 hours ago · USGS 10016900 |
64 cfs | 1.05 ft | · | 46°F | 6,740 ft | Upper Bear |
|
Bear River Above Reservoir, Wy
11 hours ago · USGS 10020100 |
58 cfs | 1.10 ft | · | 47°F | 6,465 ft | Upper Bear |
|
Bear River Below Reservoir, Wy
11 hours ago · USGS 10020300 |
53 cfs | 2.92 ft | · | 46°F | 6,409 ft | Upper Bear |
|
Sf L Wind Riv Ab Washakie Res, Wy
11 hours ago · USGS 06228350 |
52 cfs | 2.63 ft | · | 54°F | 6,406 ft | Little Wind |
|
Pacific Creek At Moran Wy, Wy
11 hours ago · USGS 13011500 |
48 cfs | 4.26 ft | 55°F | 39°F | 6,734 ft | Snake Headwaters |
|
East Fork Of Smiths Fork Near Robertson, Wy
11 hours ago · USGS 09220000 |
43 cfs | 4.08 ft | · | 41°F | 8,475 ft | Blacks Fork |
|
Henrys Fork Near Manila, Wy
11 hours ago · USGS 09229500 |
42 cfs | 6.52 ft | · | 49°F | 6,071 ft | Upper Green-Flaming Gorge Reservoir |
|
Big Sandy River Near Farson, Wy
12 hours ago · USGS 09213500 |
39 cfs | 3.70 ft | · | 45°F | 6,774 ft | Big Sandy |
|
Crow C Nr Fairview Wyo, Wy
11 hours ago · USGS 13025500 |
30 cfs | 2.10 ft | · | 45°F | 6,216 ft | Salt |
|
Flat Creek Bel Cache Creek, Wy
11 hours ago · USGS 13018350 |
25 cfs | 1.49 ft | 56°F | 43°F | 6,130 ft | Greys-Hobock |
|
Clear Creek Near Buffalo, Wy
12 hours ago · USGS 06318500 |
24 cfs | 1.51 ft | · | 66°F | 5,204 ft | Clear |
|
Laramie River Near Fort Laramie, Wy
12 hours ago · USGS 06670500 |
23 cfs | 2.08 ft | 46°F | 62°F | 4,226 ft | Middle North Platte-Scotts Bluff |
|
Fontenelle C Nr Herschler Ranch, Wy
11 hours ago · USGS 09210500 |
23 cfs | 5.14 ft | · | 46°F | 6,935 ft | Upper Green |
|
Boiling River At Mammoth, Wy
11 hours ago · USGS 06190540 |
22 cfs | 1.10 ft | 126°F | 50°F | 5,672 ft | Yellowstone Headwaters |
|
Encampment River Ab Hog Park Cr, Wy
11 hours ago · USGS 06623800 |
18 cfs | · | 53°F | 44°F | 8,293 ft | Upper North Platte |
|
Encampment River At Mouth, Wy
11 hours ago · USGS 06625000 |
17 cfs | 1.50 ft | · | 48°F | 6,973 ft | Upper North Platte |
|
Granite C Ab Granite C Supplemental, Wy
12 hours ago · USGS 13016305 |
14 cfs | 3.77 ft | · | 43°F | 6,404 ft | Greys-Hobock |
|
Blacks Fork Near Little America, Wy
12 hours ago · USGS 09224700 |
12 cfs | 2.88 ft | · | 49°F | 6,136 ft | Blacks Fork |
|
Bear River Below Pixley Dam, Wy
11 hours ago · USGS 10028500 |
10 cfs | 1.11 ft | · | 46°F | 6,182 ft | Central Bear |
|
Rock Creek Ab King Canyon Canal, Wy
11 hours ago · USGS 06632400 |
9 cfs | 1.11 ft | · | 56°F | 7,795 ft | Medicine Bow |
|
Hams Fork Below Pole Creek, Wy
11 hours ago · USGS 09223000 |
9 cfs | 2.69 ft | · | 45°F | 7,462 ft | Blacks Fork |
|
Sweetwater River Near Sweetwater Station, Wy
11 hours ago · USGS 06638090 |
8 cfs | 1.35 ft | · | 55°F | 6,593 ft | Sweetwater |
|
North Brush Creek Near Saratoga, Wy
11 hours ago · USGS 06622700 |
7 cfs | 1.88 ft | · | 50°F | 8,074 ft | Upper North Platte |
|
Cache Creek Near Jackson, Wy
11 hours ago · USGS 13018300 |
6 cfs | 3.42 ft | 45°F | 48°F | 6,774 ft | Greys-Hobock |
|
Powder River At Arvada, Wy
11 hours ago · USGS 06317000 |
5 cfs | 1.44 ft | · | 63°F | 3,622 ft | Upper Powder |
|
Middle Fork Powder River Near Barnum, Wy
12 hours ago · USGS 06309200 |
4 cfs | 4.90 ft | · | 56°F | 7,233 ft | Middle Fork Powder |
|
Tantalus Creek At Norris Junction, Wy
11 hours ago · USGS 06036940 |
3 cfs | 1.45 ft | 74°F | 42°F | 7,547 ft | Madison |
|
Belle Fourche River Below Moorcroft, Wy
11 hours ago · USGS 06426500 |
2 cfs | 1.03 ft | · | 55°F | 4,101 ft | Upper Belle Fourche |
|
Laramie River At Laramie, Wy
12 hours ago · USGS 06660000 |
2 cfs | 3.12 ft | · | 51°F | 7,128 ft | Upper Laramie |
|
L Medicine Bow R At Boles Spring, Wy
11 hours ago · USGS 06634620 |
1 cfs | · | · | 50°F | 6,570 ft | Little Medicine Bow |
|
Deer Creek In Canyon, Wy
11 hours ago · USGS 06646000 |
1 cfs | 1.69 ft | · | 62°F | 5,651 ft | Middle North Platte-Casper |
|
Medicine Bow R Ab Seminoe Reservoir, Wy
11 hours ago · USGS 06635000 |
0 cfs | 1.64 ft | · | 53°F | 6,430 ft | Medicine Bow |
|
South Fork Shoshone River Ab Buffalo Bill Res, Wy
12 hours ago · USGS 06281000 |
0 cfs | 3.27 ft | · | 56°F | 5,414 ft | South Fork Shoshone |
|
Little Snake River Near Dixon, Wy
12 hours ago · USGS 09257000 |
0 cfs | 1.64 ft | · | 50°F | 6,342 ft | Little Snake |
|
Muddy Creek Below Young Draw, Wy
12 hours ago · USGS 09258980 |
0 cfs | 1.78 ft | 61°F | 51°F | 6,273 ft | Muddy |
|
Cheyenne River Near Spencer, Wy
11 hours ago · USGS 06386500 |
0 cfs | 3.32 ft | · | 60°F | 3,582 ft | Angostura Reservoir |
See every Wyoming gauge ranked against normal.
- Percentile rank & % of median for all 76 gauges
- 15-day PULSE forecast on every gauge
- Custom flow alerts & full daily history
Wyoming river runs
Paddleable river sections in Wyoming keyed to USGS gauges, with live streamflow and whitewater class.
| River run | Status | Streamflow | Air temp | Class |
|---|---|---|---|---|
| 1st Gorge Lime | · | · | 40°F | IV+ TO V |
| Alpine Canyon (West Table To Sheep Gulch) | Runnable | 817 cfs | 48°F | III- TO III+ |
| Astoria To West Table | Runnable | 817 cfs | 48°F | I TO II |
| Canyon | · | 26 cfs | 70°F | I |
| Cave Falls Run | Runnable | 265 cfs | 51°F | III TO III+ |
| Granite Creek | Too High | 67 cfs | 46°F | II TO III |
| Hoback Canyon | · | · | 38°F | II TO III+ |
| Lower Greys (Squaw Creek To Bridge Campground) | Runnable | 350 cfs | 47°F | III+ TO V- |
| Narrows | Runnable | 890 cfs | 44°F | III- TO III+ |
| Northgate Canyon | Runnable | 142 cfs | 61°F | III- TO III+ |
| Upper Boxelder Canyon | Runnable | 215 cfs | 74°F | V |
| Upper Greys (Lynx Creek To Little Greys) | Runnable | 350 cfs | 47°F | II TO IV+ |
| Upper Greys (Murphy Creek Bridge To Lynx Creek Campground) | Runnable | 350 cfs | 47°F | II TO II+ |
| Upper Greys (Murphy Creek Bridge To Lynx Creek Campground) | Runnable | 350 cfs | 47°F | II TO II+ |
| Wedding Of The Waters | Too High | 4,350 cfs | 89°F | I |
See when every Wyoming run is runnable.
- Runnable-window alerts on every river run
- 15-day PULSE flow forecast per run
- Full whitewater class & gauge history
About Wyoming streamflow
What are river levels like in Wyoming right now?
As of September 4, 2026, Wyoming rivers are running at 125% of normal across 76 USGS streamgauges, and the Snake River Ab Reservoir Nr Alpine Wy is reporting the highest discharge at 6,450 cfs. The full sortable gauge table is below.
Which Wyoming river is running highest right now?
As of September 4, 2026, the highest discharge in Wyoming is 6,450 cfs on the Snake River Ab Reservoir Nr Alpine Wy. See the sortable gauge table for the full statewide ranking.
Are Wyoming rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means Wyoming 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 Wyoming 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 Wyoming 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 Wyoming 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.
Streamflow in every state
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