WYOMING FLOW REPORT

Last Updated: December 4, 2025

Wyoming's river enthusiasts should be prepared for a variety of streamflow conditions this season, as data indicates considerable variations across the state's waterways. Noteworthy is the Wind River at Riverton, which is flowing at 366 cubic feet per second (cfs), a significant decrease of 13.48 cfs in the past 24 hours and registering at 49.84 percent below normal. This could signal potential flow drought conditions. On the other hand, the North Platte River at Orin has seen an increase of 27.08 cfs, now at 671 cfs, which is 11.68 percent above normal, hinting at healthy water levels that might be of interest for recreational activities. The Snake River at Moose, a popular destination for whitewater enthusiasts, stands at 990 cfs with a modest increase of 1.12 cfs in the last day, flowing at a robust 5.16 percent above normal.

Additionally, the Lamar River near Tower Falls Ranger Station in Yellowstone National Park is experiencing an increase, currently at 276 cfs, which is a sharp 22.12 cfs rise and 25.64 percent above the norm, possibly indicating early signs of flooding if such trends continue. Contrastingly, the Shoshone River near Lovell is at a 456 cfs flow rate, up only by 1.11 cfs but still 30.8 percent below normal, which highlights regional disparities in water levels. Residents and visitors along these rivers, particularly in areas like Riverton, Orin, Yellowstone National Park, and Lovell, should stay informed about current and forecasted water levels, as the rapid changes may impact water-based recreational opportunities and could lead to potential flooding or drought conditions. These streamflow metrics also serve as critical indicators for local ecosystem health and water resource management.

       



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 4 2025

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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