Rustic Falls is a 10-foot waterfall on Cascade Creek in San Juan County, Washington, in the Puget Lowland region. It lies about 11.5 miles northeast of Friday Harbor and roughly 17.5 miles southwest of Bellingham as the crow flies.
At 10 feet it is on the modest side for Washington, where the typical waterfall with a recorded height stands around 82 feet; it ranks 927th of 941. By form it is a veiling waterfall, a thin sheet of water spread over the rock face, combined with a plunge character.
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. Cascade Creek carries 11 recorded waterfalls; the biggest of them reaches 40 feet.
San Juan County holds 9 recorded waterfalls, and several are close by. Cascade Falls, a 40-foot veiling horsetail waterfall, is under a mile away. Cavern Falls, a 20-foot tiered horsetail waterfall, is under a mile away. Paul Falls, a cascade waterfall, is under a mile away.
Rustic Falls is located at 48.6470° N, 122.8314° 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.