“The Ware River is a Massachusetts river that has two forks, the longest of which (the east branch) begins in Hubbardston, Massachusetts, continues through the middle of the state, joins the Quaboag River, and ends in Three Rivers, Massachusetts, where it joins the Chicopee River on its way to the Connecticut River.  The Brigham Pond Dam, to form a pond of the same name, first impounds the east branch of the Ware River near Hubbardston, Massachusetts. The watershed north of Hubbardston feeds tributaries of the Ware and Millers Rivers, the Millers River running generally west and the Ware Rive running generally south. This river is part of the Massachusetts Water Resource Authority (MWRA) drinking water system serving the greater Boston area.

The river was named for early fish weirs (locally pronounced). ”

Source:  Wikipedia