Lower Mesa Falls is a 65-foot waterfall on the Henrys Fork in eastern Idaho's Fremont County, within the Caribou-Targhee National Forest along the Mesa Falls Scenic Byway. Located downstream from Upper Mesa Falls, it is one of the two main falls on this stretch of the river. The falls lie in the Mesa Falls area, where the Henrys Fork drops through a forested volcanic landscape, making Lower Mesa Falls one of the notable natural features visited along the scenic byway.