Factory Falls is a stretch of rapids on Saint George River in Knox County, Maine, in the Acadian Plains and Hills region. It lies about 0 miles west of Warren and roughly 59.9 miles northeast of Portland 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.
It is the only recorded rapid in Knox County. Damariscotta Reversing Falls, is about 15 miles away. Goose Falls, 10 feet high, is about 26.8 miles away.
Factory Falls is located at 44.1202° N, 69.2409° 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.