Upper Summit Creek Falls is an 18-foot waterfall on Summit Creek in Lewis County, Washington, in the Cascades region. It lies about 36.1 miles east of Eatonville and roughly 45.6 miles southeast of South Hill as the crow flies.
At 18 feet it is on the modest side for Washington, where the typical waterfall with a recorded height stands around 82 feet; it ranks 886th of 941. By form it is a slide, where the water glides down a smooth, inclined rock surface, combined with a cascade character.
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. Summit Creek carries 5 recorded waterfalls; the biggest of them reaches 119 feet.
Lewis County holds 180 recorded waterfalls, and several are close by. Thunder Falls, an 82-foot veiling horsetail waterfall, is under a mile away. Waterfall 36 mi W of Tieton, is under a mile away. Fish Ladder Falls, a 119-foot tiered horsetail waterfall, is about 1.3 miles away.
Upper Summit Creek Falls is located at 46.7102° N, 121.5394° 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.