Located along the Historic Columbia River Highway.

The falls drops in two major steps, split into an upper falls
of 542 feet (165 m) and a lower falls of 69 feet (21 m), with a
gradual 9 foot (3 m) drop in elevation between the two, so the
total height of the waterfall is conventionally given as 620 feet
(189 m). Multnomah Falls is the tallest waterfall in the State of
Oregon. It is credited by a sign at the site of the falls as the
third tallest year-round waterfall in the United States.