Upper Cedar Falls is a waterfall on Cedar River in King County, Washington, in the Cascades region. It lies about 1.9 miles south of Wilderness Rim and roughly 21.2 miles southeast of Sammamish as the crow flies.
Its height has not been recorded in the source data. By form it is a tiered waterfall, falling in several distinct steps one after another, combined with a horsetail character. It falls in 2 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. Cedar River carries 4 recorded waterfalls along its course.
King County holds 236 recorded waterfalls, and several are close by. Middle Cedar Falls, 15 feet high, is under a mile away. Lower Cedar Falls, 80 feet high, is under a mile away. Lost Creek Falls, 200 feet high, is under a mile away.
Upper Cedar Falls is located at 47.4189° N, 121.7668° 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.