The Ammonoosuc River is a 30-mile-long river located in northern New Hampshire, USA. It flows through the White Mountains and is a tributary of the Connecticut River. The river is known for its scenic beauty and recreational opportunities, including fishing, kayaking, and hiking along its banks. The river's name is derived from the Abenaki word meaning "small, swift river." It passes through several towns, including Littleton and Bath, and is an important water source for the region. The Ammonoosuc River also supports diverse wildlife and contributes to the local ecosystem.