Deerfield No. 2 Reservoir Report
Last Updated: December 5, 2025
Deerfield No.
°F
°F
mph
Wind
%
Humidity
Summary
2, a private hydroelectric dam located on the Deerfield River in Conway, Massachusetts, has been a vital part of the region's water resource infrastructure since its completion in 1913. Standing at 76 feet tall and 447 feet long, this concrete gravity dam has a storage capacity of 1,830 acre-feet and serves as a controlled spillway with a width of 256 feet. With a maximum discharge of 31,200 cubic feet per second, Deerfield No. 2 plays a crucial role in managing water flow and providing hydroelectric power to the surrounding area.
Managed by the Federal Energy Regulatory Commission, Deerfield No. 2 has a low hazard potential and a very high risk assessment rating. Despite its age, the dam's condition assessment is not available, highlighting the need for regular inspections and maintenance to ensure its continued safety and functionality. The emergency action plan for the dam was last revised in 2018, emphasizing the importance of preparedness and risk management measures in the face of potential hazards.
As a key component of the water resource infrastructure in Franklin County, Massachusetts, Deerfield No. 2 represents a blend of historical significance and modern functionality. With its efficient hydroelectric capabilities and controlled spillway design, this dam continues to play a vital role in water management and energy production in the region. Ongoing monitoring and risk management efforts are essential to safeguard the integrity of Deerfield No. 2 and ensure its continued contribution to the local ecosystem and community.
Year Completed |
1913 |
Dam Length |
447 |
Dam Height |
76 |
River Or Stream |
Deerfield River |
Primary Dam Type |
Concrete |
Surface Area |
63.5 |
Drainage Area |
508 |
Nid Storage |
1830 |
Outlet Gates |
Other Controlled - 1 |
Hazard Potential |
Low |
Nid Height |
76 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
South River Near Conway
|
13cfs |
Deerfield River Near West Deerfield
|
340cfs |
North River At Shattuckville
|
42cfs |
Connecticut River At Montague City
|
4540cfs |
Deerfield River At Charlemont
|
761cfs |
Green River Near Colrain
|
26cfs |
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.
Deerfield No. 2
Hawley State Natural Area
Conway State Forest
Mt Sugarloaf State Reservation
Pelham Lake Park
Mount Toby Highlands State Natural Area