Nature Mapping Jackson Hole: Snake River Float Trips

Photo of American Avocets: David Hopkins

The Snake River Float 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. The float trips begin Sunday, May 6, 2018.

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!

Snake River Float Trip Details


Floats take place every Sunday morning from May 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.

2018 Snake River Float Trips:

Every Sunday starting May 6, 2018 through September. Join us! Those interested in participating should contact project coordinator and expert birder Tim Griffith at You may also contact Kate Gersh at to learn more about the trip or to join one. We always welcome your phone inquiries as well at 307-739-0968.


Float trips for this section of the river are offered courtesy of AJ DeRosa’s Wooden Boat Tours. Special thanks to AJ and his boatmen! A $30 per person fee for the trips for the shuttle is suggested and you may elect to offer a tip to the guide(s).

Snake River Float Trips Project Area

Snake River Float Trip – April 30, 2017

Snake River Float Trips Infographic

Top Ten Species Lists 2014 – 2017

2014 2015 2016 2017
Spotted Sandpiper Canada Goose Common Merganser Canada Goose
Common Meganser Spotted Sandpiper Spotted Sandpiper Spotted Sandpiper
American Robin Tree Swallow Canada Goose Yellow Warbler
Canada Goose American Pelican Tree Swallow Cliff Swallow
American Pelican Mallard Mallard Common Merganser
Yellow Warbler Common Merganser Cliff Swallow Mallard
Tree Swallow American Robin American Robin Tree Swallow
Mallard Yellow Warbler Yellow Warbler American Robin
Bald Eagle Song Sparrow Yellow-rumped Warbler Song Sparrow
Cedar Waxwing Bald Eagle Bald Eagle 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
All rights reserved.
Privacy Policy

Celebrate Wildlife

Enjoy monthly updates from the JHWF and stay informed about our work.

You have Successfully Subscribed!