Marietta Falls is a waterfall on Marietta Creek in Cowlitz County, Washington, in the Puget Lowland region, with a total height of about 125 feet. It lies about 3.6 miles northeast of Kalama and roughly 28.5 miles north of Vancouver as the crow flies.
At 125 feet it is taller than the typical Washington waterfall of about 82 feet, ranking 334th of 941 with a recorded height. The water comes down as a plunge, where the water drops vertically and loses contact with the rock face.
The Puget Lowland is a glacially shaped basin of low hills, lakes and wetlands between the Olympics and the Cascades, once covered by Douglas fir and western red cedar and now the most settled part of Washington. Streams here run through terraces of glacial till and outwash, with waterfalls where creeks cut through the deposits.
There are 26 recorded waterfalls in Cowlitz County. Lower Kalama River Falls, 20 feet high, is about 3.1 miles away. Little Jack Falls, is about 5.4 miles away across the state line in Oregon. Jack Falls, a 70-foot horsetail waterfall, is about 5.5 miles away across the state line in Oregon.
Marietta Falls is located at 46.0421° N, 122.7867° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this waterfall yet.