Bellows Falls Reservoir Report
Nearby: Minards Pond Mill Pond Dam
Last Updated: December 13, 2025
Bellows Falls in New Hampshire is a captivating hydroelectric dam on the Connecticut River, boasting a structure height of 48 feet, a dam length of 643 feet, and a storage capacity of 30,000 acre-feet.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1907, this concrete gravity dam serves multiple purposes including hydroelectric power generation and recreation. The dam is regulated by the NHDES Dam Bureau and inspected by the Federal Energy Regulatory Commission, ensuring its safety and compliance with state and federal regulations.
Despite its low hazard potential, Bellows Falls presents a very high risk due to its critical role in managing water resources and generating renewable energy. With a maximum discharge capacity of 157,600 cubic feet per second and a controlled spillway width of 572 feet, the dam plays a crucial role in flood control and water management in the region. The dam's emergency action plan was last revised in December 2018, indicating a proactive approach to risk management and preparedness in case of emergencies.
As a significant landmark in Cheshire, New Hampshire, Bellows Falls is not only a functional dam but also a symbol of sustainable energy production and water resource management. With its historical significance and strategic location on the Connecticut River, this dam continues to play a vital role in supporting the local community and preserving the natural environment for future generations.
Year Completed |
1907 |
Dam Length |
643 |
Dam Height |
48 |
River Or Stream |
Connecticut River |
Primary Dam Type |
Concrete |
Surface Area |
2804 |
Drainage Area |
5414 |
Nid Storage |
30000 |
Outlet Gates |
Roller - 2 |
Hazard Potential |
Low |
Nid Height |
48 |
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.
Bellows Falls
Connecticut River boat launch