Magoun Pond Dam Reservoir Report
Last Updated: December 19, 2025
Magoun Pond Dam, located in Marshfield, Massachusetts, is a local government-owned structure that serves a primary purpose of recreation.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1991, this earth dam stands at a height of 15.7 feet and has a hydraulic height of 7.9 feet. The dam plays a crucial role in controlling a tributary of the North River, with a storage capacity of 30.5 acre-feet and a drainage area of 1.05 square miles.
Despite its importance for recreation, Magoun Pond Dam has been assessed as being in poor condition, with a significant hazard potential. The last inspection in December 2017 revealed this assessment, prompting a moderate risk rating of 3. The dam lacks an Emergency Action Plan (EAP) and updated emergency contacts, raising concerns about its readiness to handle any potential incidents. With the Department of Conservation and Recreation serving as the state regulatory agency, efforts are likely underway to address the dam's condition and mitigate any risks to surrounding areas. For water resource and climate enthusiasts, monitoring the developments at Magoun Pond Dam could provide valuable insights into the challenges and strategies involved in managing critical infrastructure in the face of changing environmental conditions.
Year Completed |
1991 |
Dam Length |
220 |
Dam Height |
15.7 |
River Or Stream |
TRIBUTARY OF NORTH RIVER |
Primary Dam Type |
Earth |
Surface Area |
0.01 |
Hydraulic Height |
7.9 |
Drainage Area |
1.05 |
Nid Storage |
30.5 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
16 |
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.
Magoun Pond Dam
Bridge Street Norwell