The Salmon River in Idaho, one of the longest free-flowing rivers in the United States, rushes through a geologic wonderland of wooded ridges, eroded bluffs, and stone towers and crags.
Meandering across a wide, relatively flat plain, the White River of Arkansas is no stranger to flooding. With regularity, spring rains push the river over its banks, inundating the flood-adapted forest that surrounds it. The river reached its fifth highest crest of 33.78 feet on April 19, 2008.
he largest tributary of the Colorado River between Lake Powell and the Grand Canyon, the Paria River flows southeast from its headwaters in southernmost Utah to join the Colorado River between Page, Arizona, and Marble Canyon. The Paria River provides spectacular scenery, and is known for the very narrow “slot” canyons that it cuts through the layered rocks of the Colorado Plateau.