American Falls Reservoir

American Falls Reservoir at a glance

Its coordinates are 42.9320, -112.7337. It lies at roughly 4,357 feet of elevation. Water leaves through the Snake River.

American Falls Reservoir has no public water level gauge that we can read, so there is no level chart here. An invented number would be worse than none. Ask the managing agency directly if the level matters for your trip.

If American Falls Reservoir is busy, the nearest alternatives here are Lake Walcott (Idaho, 36 mi), Blackfoot Reservoir (Idaho, 57 mi) and Ririe Reservoir (Idaho, 67 mi). Idaho has 26 lakes on this site in total.

Water quality is monitored unevenly on inland lakes, so posted notices are the most reliable guide. No public sensor reports water temperature at American Falls Reservoir, so the panel shows air temperature and wind. Season dates vary by park; the operating agency publishes them each spring.

Public access at American Falls Reservoir covers 2 named swimming spots. These come from USGS GNIS. Bronco Beach and Rainbow Beach are on the list. Unless the operating agency says otherwise, treat these as unsupervised swimming.