Nellie Falls is a waterfall on Middle Fork Snoqualmie River in King County, Washington, in the North Cascades region, with a total height of about 150 feet. It lies about 18.6 miles east of Tanner and roughly 35.3 miles east of Sammamish as the crow flies.
At 150 feet it is taller than the typical Washington waterfall of about 82 feet, ranking 280th of 941 with a recorded height. The water comes down as a cascade, descending over a series of rock steps rather than in a single drop. It falls in 2 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.
There are 236 recorded waterfalls in King County. Lower Hardscrabble Falls, is under a mile away. Hardscrabble Falls, a cascade waterfall, is about 1.6 miles away. Iceberg Lake Falls, a 550-foot horsetail waterfall, is about 2 miles away.
Nellie Falls is located at 47.5077° N, 121.3502° 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.