 With a surface area of 480 acres, Long Pond exceeded the 100-acre guideline to be considered a lake by today's standards.On June 6, 1810 it was a dry summer and the Barton River, which supplied the power for grist mills in Glover and northward, was running very low.At the request of Arron Willson, the local Glover gristmill owner, 60 men and boys attempted to create a new north outlet from Long Pond to the Barton River, but instead, they unintentionally caused the banks of the pond to give way.