Monument Falls with a total height of 1840 feet 561 meters and a tallest single drop of 1160 feet 354 meters, is located in USA, Montana, Glacier National Park, Avalanche Lake. Monument Falls is one of the three tall waterfalls seen dropping into the far side of popular Avalanche Lake, just a short hike off of the Going-to-the-Sun Highway in Glacier National Park. The falls are fed by glaciers and snowfields in Floral Park, and do appear to flow year round, but are best during the early summer.