Stair Falls is a stretch of rapids on East Branch Penobscot River in Penobscot County, Maine, in the Acadian Plains and Hills region. It lies about 17 miles west of Patten as the crow flies.
The Acadian Plains and Hills of Maine are rolling, glaciated forest of spruce, fir and northern hardwoods with countless lakes, bogs and rivers. Rivers drop over granite and slate ledges in falls and rips. East Branch Penobscot River carries 5 recorded rapids, and Stair Falls is the tallest of them.
There are 20 recorded rapids in Penobscot County. Pond Pitch, 9 feet high, is about 1.3 miles away. Hulling Machine, The, 12 feet high, is about 2.9 miles away. Bowlin Falls, 8 feet high, is about 4.1 miles away.
Stair Falls is located at 46.0871° N, 68.7763° 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 rapid yet.