Hay Brook Falls is a 28-foot waterfall on Hay Brook in Piscataquis County, Maine, in the Northeastern Highlands region. It lies about 15.4 miles east of Greenville and roughly 135.3 miles north of Portland as the crow flies.
At 28 feet it is on the modest side for Maine, where the typical waterfall with a recorded height stands around 29 feet; it ranks 41st of 80. By form it is a tiered waterfall, falling in several distinct steps one after another. It falls in 3 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.
Piscataquis County holds 50 recorded waterfalls, and several are close by. Screw Auger Falls, a tiered waterfall, is about 1.4 miles away. Hammond Street Pitch, a fan waterfall, is about 1.9 miles away. Jaws, The, is about 2.2 miles away.
Hay Brook Falls is located at 45.4853° N, 69.2745° 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.