Goldthwaite Brook Dam Reservoir Report
Last Updated: December 18, 2025
Goldthwaite Brook Dam in Essex, Massachusetts, is a privately owned structure regulated by the Department of Conservation and Recreation.
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Summary
The dam, located in Peabody, serves as a water supply source with a primary purpose of water supply. It is an earth dam with a buttress core type, standing at a height of 8 feet and holding a storage capacity of 56.1 acre-feet. The dam has a low hazard potential and was last assessed to be in fair condition in 2009.
Despite its moderate risk assessment rating, Goldthwaite Brook Dam has been inspected regularly, with the last inspection conducted in 2009. The dam's spillway type is uncontrolled, with a surface area of 0.02 square miles and a drainage area of 5.1 square miles. The structure has a history of meeting regulatory requirements and is equipped with emergency action plans, although details on their preparation and updates are not readily available. Overall, Goldthwaite Brook Dam stands as a vital water resource infrastructure within the area, ensuring a stable water supply while maintaining a fair condition and low hazard potential.
Dam Height |
8 |
River Or Stream |
GOLDTHWAITE BROOK |
Primary Dam Type |
Earth |
Surface Area |
0.02 |
Hydraulic Height |
5.17 |
Drainage Area |
5.1 |
Nid Storage |
56.1 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
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.
Goldthwaite Brook Dam
Nahant Ave Ramp