Multnomah Falls - Portland, Oregon ~ Underground springs from Larch Mountain are the year-round source of water for the waterfall, augmented by spring runoff from the mountain's snowpack and rainwater during the other seasons.
14 Waterfalls in Arkansas - Cedar Falls: The best known natural waterfall in the state, Cedar Falls is the focal point of Petit Jean State Park atop Petit Jean Mountain near Morrilton. This 95-foot gusher spills into Cedar Creek and can be accessed via the Cedar Falls Trail, which winds through Cedar Creek Canyon to the splash down. The trip is 2-1/4 miles round trip and is classified as moderate-to-strenuous. The park is located on Ark. 154 southwest of Morrilton.