South Deerfield Water Supply Dam Reservoir Report
Nearby: Roaring Brook Dam Francis P. Ryan Dam
Last Updated: December 26, 2025
The South Deerfield Water Supply Dam, located in Whately, Massachusetts, is a crucial structure providing water supply for the area.
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Summary
Completed in 1953, this concrete arch dam stands at a height of 30 feet and has a storage capacity of 32.1 acre-feet. The dam is situated on Roaring Brook and serves as a vital resource for the surrounding community.
Managed by the Department of Conservation and Recreation, the South Deerfield Water Supply Dam is state-regulated and undergoes regular inspections to ensure its safety and functionality. With a significant hazard potential but a satisfactory condition assessment, the dam poses a moderate risk level. The emergency action plan status and risk management measures for the dam are currently unlisted, indicating a potential area for improvement in emergency preparedness.
As a key component of the local water supply infrastructure, the South Deerfield Water Supply Dam plays a crucial role in maintaining water resources for the region. Its strategic location and design make it an essential asset for water supply management and climate resilience efforts in the area.
Year Completed |
1953 |
Dam Length |
120 |
Dam Height |
30 |
River Or Stream |
ROARING BROOK |
Primary Dam Type |
Concrete |
Surface Area |
0.06 |
Hydraulic Height |
29 |
Drainage Area |
5.2 |
Nid Storage |
32.1 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
South Deerfield Water Supply Dam