Upper Marten Creek Falls is a waterfall on Marten Creek in King County, Washington, in the North Cascades region, with a total height of about 149 feet. It lies about 13.9 miles northeast of Tanner and roughly 27 miles east of Sammamish as the crow flies.
At 149 feet it is taller than the typical Washington waterfall of about 82 feet, ranking 295th of 941 with a recorded height. The tallest single drop is 76 feet. The water comes down as a tiered waterfall, falling in several distinct steps one after another, combined with a horsetail character. It falls in 3 drops.
The North Cascades are a wilderness of jagged peaks, glaciers and deep, forested valleys of western hemlock, silver fir and Douglas fir, with some of the heaviest snowfall in the country. Meltwater from glaciers and snowfields pours down thousands of feet of cliffs in countless cascades and horsetail falls. Marten Creek carries 2 recorded waterfalls, and Upper Marten Creek Falls is the tallest of them.
There are 236 recorded waterfalls in King County. South Dog Mountain Falls, a 127-foot horsetail waterfall, is under a mile away. Marten Creek Falls, a 141-foot tiered horsetail waterfall, is under a mile away. Dog Mountain Falls, is about 1.5 miles away.
Upper Marten Creek Falls is located at 47.5938° N, 121.5045° 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.