AttributeWachusett Reservoir
Year Built 1905
Dam Length 944 feet
Volume Capacity 65 billion gallons
Surface Area 6.5 square miles
Watershed Area
(including reservoir)
107.69 square miles
Shoreline 37 miles
Length 8.5 miles
Maximum Width 1.1 miles
Mean Width0.7 miles
Maximum Depth 128 feet
Mean Depth49 feet
Normal Operation Range 387-392 feet
Intake Depth364 & 345 feet
Overflow Elevation395 feet
% DCR/DWSP Protected Land29%
(includes State Park land under a Care & Control Agreement with Office of Watershed Management)
% Other Protected Land24%
Total % Protected Land53%


For visitor information, please visit the Wachusett Reservoir park page.

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