Lake Twotowns Dam Reservoir Report
Last Updated: December 9, 2025
Lake Twotowns Dam, also known as Farm Reservoir, is a privately owned structure located in Dixville, New Hampshire.
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Summary
Built in 1936, this earth dam stands at a height of 25 feet and spans 700 feet, with a maximum storage capacity of 51.1 acre-feet. The primary purpose of the dam is for recreation, offering a surface area of 2.5 acres for visitors to enjoy various water activities.
Managed by the NHDES Dam Bureau, Lake Twotowns Dam is state-regulated, inspected, and enforced to ensure its safety and functionality. With a low hazard potential and satisfactory condition assessment, the dam poses a moderate risk level. In the event of an emergency, the dam has an established Emergency Action Plan to guide response efforts. As a key feature along the TR Mohawk River, this dam plays a crucial role in water resource management and climate resilience efforts in the Coos County area.
Overall, Lake Twotowns Dam serves as a vital recreational and regulatory asset in New Hampshire, offering both leisure opportunities and essential water management functions. Its historical significance, coupled with its modern-day risk management measures, highlights the importance of sustainable dam infrastructure for the surrounding community and ecosystem. Enthusiasts interested in water resources and climate resilience can appreciate the role that Lake Twotowns Dam plays in balancing recreational needs with safety and environmental considerations.
Year Completed |
1936 |
Dam Length |
700 |
Dam Height |
25 |
River Or Stream |
TR MOHAWK RIVER |
Primary Dam Type |
Earth |
Surface Area |
2.5 |
Drainage Area |
0.03 |
Nid Storage |
51.1 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
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.
Lake Twotowns Dam