WYOMING FLOW REPORT

Last Updated: December 24, 2025

Wyoming's river enthusiasts should note a mixed bag of streamflow conditions across the state's many waterways. Currently, the North Fork Shoshone River at Wapiti stands out with a significantly high percent normal streamflow, registering at 133.19%, and a substantial 24-hour increase of 110.8 cubic feet per second (cfs), potentially indicating a higher risk of flooding near the Wapiti area. Conversely, the Little Wind River near Riverton is experiencing a dramatic flow drop, -47.2% of the normal, with a decrease of 13.94 cfs over the past day, signaling a localized flow drought. Areas near the Snake River, particularly at Moose, remain stable with only a slight decrease of 4.6 cfs, maintaining a near-normal flow.

Looking at trending water levels, the Greys River above the reservoir near Alpine has seen an impressive surge, jumping 96.76 cfs, reaching 61.56% above its normal flow, which could draw attention for those interested in whitewater activities. Similarly, the Snake River above Jackson Lake at Flagg Ranch has increased by 2.08 cfs, marking a high percent normal of 55.31%, which might affect popular whitewater trails in the region. Major cities near the Wind River, such as Riverton, should keep an eye on current gage heights, with the Wind River at Riverton measuring 3.57 feet. Additionally, the Green River near Green River, Wyoming, is flowing at 8.43% above the average, with a gage height of 1.27 feet, hinting at healthy flow conditions sufficient for local water-based recreation and ecosystems. It's important for river users to stay updated on these fluctuating conditions, as they can impact safety, access, and the overall enjoyment of Wyoming's beautiful and dynamic river systems.

       



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 24 2025

Residents of Wyoming are advised to exercise caution as multiple high wind warnings are in effect across the state. Southwest winds of 25 to 40 mph with gusts up to 75 mph are expected, particularly impacting the North Snowy Range Foothills, Central Carbon County, Green Mountains, Rattlesnake Range, and Casper Mountain. Strong crosswinds pose a risk to transportation, especially for lightweight and high-profile vehicles. Additionally, the Wind River Mountains and Teton areas face a winter weather advisory with snow accumulations of 6 to 12 inches and winds up to 45 mph, making travel difficult over mountain passes. Areas including Arlington, Elk Mountain, and Natrona County Lower Elevations should prepare for hazardous 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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