About our Snake River Floats Project:

The Snake River Floats Project is designed to gain a better idea of what species of mammals, birds and amphibians use the section of river between Wilson Bridge and South Park. In this section, the river flows mostly through private land where wildlife professionals do not conduct a systematic census.

The Snake River Float project helps to provide a more complete picture of the species that use the river corridor between Wilson Bridge and South Park. It has recorded the locations of nests of osprey, bald eagle, and great blue heron, along with ducks and shorebird nesting areas. This project has recorded thousands of individual birds. Mammals observed range from least chipmunk to moose.

The float also provides a wonderful opportunity to enjoy AJ DeRosa’s wooden boat adventures. AJ’s Jackson Hole Vintage Adventures generously offers this opportunity in support of our citizen science program.

Float & Nature Map?

Want to float the Snake River and nature map birds and other animals? Pick a Sunday through September and schedule your trip!

Photo: Doug Cahill

Snake River Float Trip Details


Floats take place bi-monthly on Sunday mornings from June through September and include about 3 hours on the river. Float participants typically meet at the Stilson Ranch parking lot at 7 am, but those details will be confirmed by the trip leader. Jackson Hole Wildlife Foundation ensures that there is at least one trained Nature Mapper on every trip, and has advanced and expert birders on each trip.


Float trips for this section of the river are offered by AJ DeRosa’s Wooden Boat Tours. Special thanks to AJ and his boatmen! JHWF has underwritten the cost for 2022, but a $60 per person donation for the trips for the shuttle is welcomed and appreciated. 

Snake River Float Trips Project Area
Snake River Float Trips Infographic

Top Ten Species Lists 2015 – 2019

2016 2017 2018 2019
Common Merganser Canada Goose Canada Goose Canada Goose
Spotted Sandpiper Spotted Sandpiper Cliff Swallow Spotted Sandpiper
Canada Goose Yellow Warbler Spotted Sandpiper Tree Swallow
Tree Swallow Cliff Swallow Common Merganser Common Merganser
Mallard Common Merganser Tree Swallow Bank Swallow
Cliff Swallow Mallard Yellow Warbler Yellow Warbler
American Robin Tree Swallow Bank Swallow Cliff Swallow
Yellow Warbler American Robin Mallard Song Sparrow
Yellow-rumped Warbler Song Sparrow Song Sparrow Mallard
Bald Eagle American White Pelican American White Pelican American Robin

Photo: Doug Cahill, American White Pelican

Photo Credits:

Henry Holdsworth
Mark Gocke
Steve Morriss
Sava Malachowski
Leine Stikkel
Tim Griffith
Jon Mobeck

Jackson Hole Wildlife Foundation

Office Location:
25 S. Willow St., Suite 10
Jackson, WY 83001

Mailing Address:
PO Box 8042
Jackson, WY 83002

(307) 739-0968

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