River Adventures

Mack's Inn Resort

provides float trips for a memorable adventure down the North Fork of the Snake River, Henry's Fork. During the five-mile float, views of the mountains contrast the crystal clear waters. Guests have seen moose, elk, deer, trout, Kokanee Salmon (during the fall), eagles, swans and more.



NOW AVAILABLE ONLINE! Online reservations are now open for 2019!


DURATION: Boat Rentals are 4 hours.


WHAT TO BRING: Coolers, drinks, snacks, sunscreen, hat, and a waterproof/zipped plastic bag for valuables and trash.

NOT ALLOWED: Pets and fishing equipment are not permitted on rafts.

WEATHER: No launches during bad weather. Full refunds will be issued for cancelations due to bad weather.

HOURS: Open May 24th 2019 through September 7th 2019 from 9:30AM - 4PM 


  • River Float Tube: 1 Person | Includes Paddles | $35
  • Tandem Kayaks: 2 People | Includes Paddles | $85
  • SUP Board: 1 person | Includes Paddles | $55
  • Rafts: 5 Adults + 2 Kids | Includes Paddles | $165
  • Canoes: 2-3 People | Includes Paddles | $90
  • Sit-in Kayaks: 1 Person | Includes Paddles | $65
  • Sit-on Kayaks: 1 Person | Includes Paddles | $65

4 Hour Rentals include paddles. Personal flotation device and transportation to launch site is included. All participants must have signed waiver. Please call us for group pricing, 208-558-7272.