Hannan Creek Falls is a waterfall on Hannan Creek in King County, Washington, in the Puget Lowland region. It lies about 5.3 miles east of Duvall and roughly 12.9 miles northeast of Sammamish as the crow flies.
Its height has not been recorded in the source data.
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.
King County holds 236 recorded waterfalls, and several are close by. Cherry Creek Falls, a 25-foot segmented plunge waterfall, is under a mile away. Upper Cherry Creek Falls, a 25-foot veiling horsetail waterfall, is about 2 miles away. Cherry Lake Falls, a 78-foot segmented horsetail waterfall, is about 2.4 miles away.
Hannan Creek Falls is located at 47.7689° N, 121.8778° 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.