Lower Mesa Falls is a 65-foot waterfall on the Henrys Fork in Fremont County, Idaho. It is located in the Caribou-Targhee National Forest on the Mesa Falls Scenic Byway. It is downstream of Upper Mesa

Fremont County is a county located in the U.S. state of Idaho. As of the 2020 census the county had a population of 13,388. The county seat and largest city is St. Anthony. The county was established