First Falls is a 49-foot waterfall in Snohomish County, Washington, in the North Cascades region. It lies about 9.2 miles east of Granite Falls and roughly 18.9 miles east of Marysville as the crow flies.
At 49 feet it is on the modest side for Washington, where the typical waterfall with a recorded height stands around 82 feet; it ranks 647th of 941. By form it is a horsetail, where the water keeps some contact with the bedrock as it falls.
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.
Snohomish County holds 224 recorded waterfalls, and several are close by. Heather Creek Falls, a 52-foot tiered cascade waterfall, is under a mile away. Mossy Rock Falls, a 145-foot cascade waterfall, is under a mile away. Humpback Falls, a 23-foot horsetail waterfall, is under a mile away.
First Falls is located at 48.0852° N, 121.7700° 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 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.