Martha Falls is a waterfall on Unicorn Creek in Lewis County, Washington, in the Cascades region, with a total height of about 670 feet. It lies about 28 miles east of Eatonville and roughly 37.6 miles southeast of South Hill as the crow flies.
At 670 feet it stands in the tallest quarter of Washington’s 941 waterfalls with a recorded height, ranking 49th; the typical Washington waterfall is about 82 feet. The tallest single drop is 121 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 12 drops.
The Cascades are a high volcanic range of snow-capped peaks, deep glacial valleys and dense conifer forest of Douglas fir, western hemlock and true firs, with abundant rain and snow on the western slopes. Basalt cliffs and lava flows give the region one of the highest concentrations of waterfalls in the country.
There are 180 recorded waterfalls in Lewis County. Lower Sunbeam Falls, a 122-foot veiling horsetail waterfall, is under a mile away. Stevens Creek Falls, a 158-foot tiered horsetail waterfall, is under a mile away. Waterfall 27 mi E of Eatonville, is under a mile away.
Martha Falls is located at 46.7640° N, 121.6946° 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.