The Great Works River is a historic river that is known for being the first to turn a water-powered mill in the United States. The river is also very scenic though as it runs through heavily wooded rural terrain between North and South Berwick. The river is narrow and winding and consists of mostly class I waters and flatwater. The upper section of the river can be shallow and dry during the summer. Downed trees and other debris can also be an issue, especially during the first part of the run. The last 3 or 4 miles usually have sufficient water for paddling all season long. Be sure to take out at Brattle Street as there is a dam and falls just after the bridge.