(c) Pocumtuck Valley Memorial Association, Deerfield MA. All rights reserved. Contact us for information about using this image.
Situated in the hills above Williamsburg, Massachusetts, the Williamsburg reservoir dam, nearly 600 feet long and 43 feet high, spanned pasture-covered hills. Made of a masonry core wall (a remnant of the west wall appears on the left) supported by earthen embankments, the dam blocked up a mountain stream and created a 100-acre lake. Like other New England reservoirs, it had been built by mill owners downstream to collect water that could be released in a regular flow to their factories to turn waterwheels and turbines. Reservoirs such as these made the industrial revolution possible.