Upper Tucker Pond South Dam Reservoir Report

Last Updated: December 5, 2025

Upper Tucker Pond South Dam, located in Sutton, Massachusetts, is a rockfill dam standing at a height of 21.7 feet and holding a maximum storage capacity of 242 acre-feet.


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Summary

The dam serves the primary purpose of recreation, offering opportunities for water-based activities on the 32-acre surface area of the pond it creates. The dam is state-regulated by the Department of Conservation and Recreation, ensuring that it meets all necessary safety and environmental standards.

Despite its significant hazard potential, with a poor condition assessment as of April 2018, the dam continues to be inspected regularly with a frequency of every 5 years. The risk assessment for the dam is rated as moderate, indicating the need for ongoing monitoring and potential risk management measures. While the dam lacks certain emergency preparedness features such as an Emergency Action Plan (EAP), it remains a popular recreational spot in the Worcester County area, attracting water resource and climate enthusiasts alike.

Dam Length

490

Dam Height

21.7

River Or Stream

TRIBUTARY OF MUMFORD RIVER

Primary Dam Type

Rockfill

Surface Area

32

Hydraulic Height

18

Drainage Area

3

Nid Storage

242

Hazard Potential

Significant

Foundations

Unlisted/Unknown

Nid Height

22
       
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.