The Wachusett Dam & Reservoir


Before There Was A Dam

How they built it and what became of the people who lived there

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October 26, 2021

What Lies Beneath

Coach & Sandy

See the area that was submerged beneath the Reservoir and the North Dike in Clinton. Today, a highway (Rte. 110), ballfields and two schools sit right on top of the dike. South Main Street, partially taken away by the project, has been since rebuilt and expanded but many of the houses there today…were there then.

October 14, 2021

Hidden Hydraulics at the Dam

Upper Gate House

The strong design of the dam successfully impounded the entire flow of the Nashua River. The engineers had next to design a system to safely deliver the entire flow, in great quantity and high pressure, to the power house over a hundred feet below.


September 16, 2021

Hidden Hydraulics at the Dam

Channel Velocity Control

At certain times of the year (due to heavy rains and spring snowmelt) large quantities of flow were released through the Waste Channel (Spillway). Special (and cleverly disguised) features were built into the design to slow the flow to prevent erosion in the millpond far below.

Over 2,000 visits to Channel Velocity Control.         Thanks, Paul

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Before There Was A Dam