Swiftwater Falls is a waterfall on Wild Ammonoosuc River in Grafton County, New Hampshire, in the Northeastern Highlands region, with a total height of about 12 feet. It lies about 4.5 miles east of Woodsville and roughly 82.5 miles north of Manchester as the crow flies.
At 12 feet it is on the modest side for New Hampshire, where the typical waterfall with a recorded height stands around 30 feet; it ranks 98th of 115. The tallest single drop is 7 feet. The water comes down as a tiered waterfall, falling in several distinct steps one after another. It falls in 2 drops.
The Northeastern Highlands are the mountains of northern New England and the Adirondacks, with spruce-fir on the summits and northern hardwood forest of maple, beech and birch below, and countless lakes and boulder-strewn brooks. Fast mountain streams drop over granite and gneiss ledges in chains of falls and pools.
There are 98 recorded waterfalls in Grafton County. Bath Falls, a 15-foot block waterfall, is about 2.4 miles away. Dearth Brook Falls, a slide waterfall, is about 4.4 miles away. Cow Meadows Ledges, is about 5.6 miles away across the state line in Vermont.
Swiftwater Falls is located at 44.1340° N, 71.9512° 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 position was verified on aerial imagery. Details on trails, parking and access have not been documented for this waterfall yet.