Oakman Pond Dam Reservoir Report
Last Updated: December 19, 2025
Oakman Pond Dam, located in Marshfield, Massachusetts, is a privately owned structure regulated by the Department of Conservation and Recreation.
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Summary
This earth dam, standing at a height of 12.5 feet with a hydraulic height of 8.3 feet, serves as a Fish and Wildlife Pond with a storage capacity of 24.8 acre-feet. The dam, built on an unnamed river or stream, covers a surface area of 4.2 acres and has a drainage area of 1.24 square miles, making it a vital resource for the local ecosystem.
Despite its significant hazard potential, Oakman Pond Dam is assessed to be in a satisfactory condition as of its last inspection in April 2016. The dam has a moderate risk assessment level and is inspected every 5 years to ensure its structural integrity and safety. The dam's spillway type is uncontrolled, with no outlet gates or associated structures. While the dam's risk management measures and emergency action plan status are unspecified, its role in supporting fish and wildlife habitats underscores its importance in maintaining ecological balance and climate resilience in the region.
Dam Length |
175 |
Dam Height |
12.5 |
River Or Stream |
UNNAMED |
Primary Dam Type |
Earth |
Surface Area |
4.2 |
Hydraulic Height |
8.3 |
Drainage Area |
1.24 |
Nid Storage |
24.8 |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
13 |
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.
Oakman Pond Dam
Bridge Street Norwell