 The high point for the tunnel route is at the Ware River in South Barre, Massachusetts, near State Route 122 and Coldbrook Road.At this point, a facility called the Ware River Diversion exists to control the Quabbin Aqueduct.This facility, consisting of a dam and hydraulic control systems, diverts the water from the Ware River into the aqueduct to either start a natural siphon or to store excess Ware River water in the Quabbin Reservoir.