Lake Wyola Dam Reservoir Report

Last Updated: December 24, 2025

Lake Wyola Dam, located in Shutesbury, Massachusetts, stands as a crucial structure managing the flow of the Sawmill River.


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Summary

Owned by the local government and regulated by the Department of Conservation and Recreation, this masonry dam serves primarily for recreational purposes. Completed in 2009, it boasts a height of 12 feet and a storage capacity of 1069 acre-feet, providing a serene 124-acre surface area for visitors to enjoy.

Despite its high hazard potential, Lake Wyola Dam has been assessed as satisfactory in terms of condition, with a moderate risk level. Regular inspections and a well-maintained Emergency Action Plan ensure that the dam remains safe and secure. With its picturesque surroundings and ample recreational opportunities, including boating and fishing, Lake Wyola Dam is a beloved spot for water resource and climate enthusiasts seeking tranquility and adventure in Franklin County, Massachusetts.

As a vital part of the local ecosystem and a source of enjoyment for residents and visitors alike, Lake Wyola Dam serves as a testament to the importance of proper dam management and maintenance in preserving water resources and enhancing community well-being. Its role in regulating the flow of the Sawmill River and providing a recreational haven underscores the value of sustainable water infrastructure in supporting both environmental and social needs.

Year Completed

2009

Dam Length

150

Dam Height

12

River Or Stream

SAWMILL RIVER

Primary Dam Type

Masonry

Surface Area

124

Hydraulic Height

10

Drainage Area

6.8

Nid Storage

1069

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

12
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.