Unnamed waterfall on Tanner Creek is a 30-foot waterfall on Tanner Creek in Multnomah County, Oregon, in the Cascades region. It lies about 8 miles south of Cascade Locks and roughly 24 miles east of Gresham as the crow flies.
At 30 feet it is on the modest side for Oregon, where the typical waterfall with a recorded height stands around 54 feet; it ranks 305th of 425.
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. Tanner Creek carries 5 recorded waterfalls; the biggest of them reaches 127 feet.
Multnomah County holds 71 recorded waterfalls, and several are close by. Upper West Branch Falls, is about 2.7 miles away. Opal Creek Falls, is about 2.9 miles away. Upper Falls Creek Falls, is about 2.9 miles away.
Unnamed waterfall on Tanner Creek is located at 45.5601° N, 121.9433° 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.