Wicassic Falls is a stretch of rapids on Merrimack River in Middlesex County, Massachusetts, in the Northeastern Coastal Zone region. It lies about 2.6 miles southeast of Tyngsboro and roughly 4 miles west of Lowell as the crow flies.
The Northeastern Coastal Zone is a rolling, glaciated lowland of oak-pine forest, stony soils and dense settlement from Boston to Long Island Sound. Waterfalls are small, often on former mill streams over granite ledges.
It is the only recorded rapid in Middlesex County. Mitchels Falls, is about 15.6 miles away. Moors Falls, is about 17 miles away across the state line in New Hampshire. Cohas Falls, is about 19.4 miles away across the state line in New Hampshire.
Wicassic Falls is located at 42.6486° N, 71.3912° 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 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 rapid yet.