WYOMING FLOW REPORT

Last Updated: December 25, 2025

Streamflow levels across Wyoming are currently 94.0% of normal, with the Snake River Ab Reservoir Nr Alpine Wy reporting the highest discharge in the state with 1940cfs and gauge stage of 3.13 ft. Meanwhile, the North Fork Shoshone River At Wapiti is seeing a spike in streamflows today after experiencing a 110.8% increase since yesterday, and currently running at 527cfs.

Maximum gauge stage in the state was last observed at the Gros Ventre River At Zenith Wy, currently reporting a stage of 18.04ft. The North Fork Shoshone River At Wapiti in the North Fork Shoshone watershed is surging for this time of year at 527cfs, about 133.19% of normal.

       



Wyoming has a semi-arid climate with an average annual precipitation of 14 inches. The state contains major surface flows such as the Green River, North Platte River, and the Snake River. The Wind River Range contains the headwaters of the Green and Snake Rivers. The state has many reservoirs and dams that are used for irrigation, flood control, and hydroelectric power generation. Snowpack in the mountains is a critical source of water for Wyoming's rivers, and snowmelt runoff typically peaks in May and June. The state is also affected by drought conditions, which can lead to reduced water availability and increased wildfire risk. Overall, Wyoming's hydrology is influenced by its specific geography, climate, and water management practices.


       

Winter Storm Warnings

December 25 2025

Residents across Wyoming must brace for a series of severe weather conditions. High wind warnings are in effect until 11 AM MST today for areas including Casper Mountain, the Green Mountains and Rattlesnake Range, as well as Natrona County Lower Elevations, with southwest winds of up to 60 mph expected. Wind River Mountains East may experience gusts up to 75 mph, creating hazardous travel conditions over South Pass. Additionally, a winter weather advisory warns of snowfall and gusty winds in the Wind River and Teton Mountains, potentially impacting travel over Teton and Togwotee Passes until 5 PM MST. The Air Quality Alert for the Powder River Basin cautions against blowing dust due to strong winds. Residents, especially travelers, are advised to exercise extreme caution and prepare for challenging conditions.


Rafting & Kayaking

River Run Status Streamflow (CFS) Air Temp (F)
1st Gorge Lime
Class IV+ to V
39.99
Alpine Canyon (West Table to Sheep Gulch)
Class III- to III+
RUNNABLE 817 48
Astoria to West Table
Class I to II
RUNNABLE 817 48
Canyon
Class I
26 70
Cave Falls Run
Class III to III+
RUNNABLE 265 51
Granite Creek
Class II to III
TOO HIGH 66.6 46
Hoback Canyon
Class II to III+
38.43
Lower Greys (Squaw Creek to Bridge Campground)
Class III+ to V-
RUNNABLE 350 47
Narrows
Class III- to III+
RUNNABLE 890 44
Northgate Canyon
Class III- to III+
RUNNABLE 142 61
Upper Boxelder Canyon
Class V
RUNNABLE 215 74
Upper Greys (Lynx Creek to Little Greys)
Class II to IV+
RUNNABLE 350 47
Upper Greys (Murphy Creek Bridge to Lynx Creek Campground)
Class II to II+
RUNNABLE 350 47
Upper Greys (Murphy Creek Bridge to Lynx Creek Campground)
Class II to II+
RUNNABLE 350 47
Wedding of the waters
Class I
TOO HIGH 4350 89
       
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