

Best for intermediate divers, shore & boat entry, mild current.
Old American Falls is a freshwater site featuring the submerged foundations of a town flooded in 1925. Snorkelers can explore remnants of old sidewalks and building structures during periods of low water. The site is suitable for intermediate snorkelers, with entry possible from both shore and boat. Conditions vary, with water temperatures ranging from 8, 14°C in spring to 20, 23°C in summer. Divers and snorkelers should be aware of potential hazards including boat traffic and low visibility, which can be opaque and muddy. Parking facilities are available at the site.
42.78500, -112.85800
The top of the Oneida grain elevator is the only part of the sunken city visible from the shore.
The site is located at the bottom of the American Falls Reservoir.
Expected in this region. No sightings logged here yet.
Skill Level
Intermediate
Entry
Shore & Boat
Current
Mild
The site is rated for intermediate snorkelers due to variable conditions and potential hazards.
Yes, the site is accessible for snorkeling, particularly during low water periods when building remnants are visible.
Entry to the water can be made from both the shore and by boat.
Primary hazards include boat traffic and low visibility, which can be opaque and muddy.
Old American Falls in American Falls typically has mild currents that most divers can handle comfortably.