Travelers are voting Wachusett Reservoir as the best dam near Ashburnham. There are 2 dams near Clinton a city just 43 km from Ashburnham and 1 dam near Littleton which is 48 km distant. The most popular of these are Quabbin Reservoir near Clinton and Wachusett Reservoir in Littleton. You can find 2 dams in Massachusetts and 139 dams in the country of United States. Our members favorite in Massachusetts is Wachusett Reservoir and Hoover Dam is the top pick in United States. Want more? Check out our map of dams near Ashburnham.