Seymour Reservoir #2 Dam Reservoir Report
Last Updated: December 5, 2025
Seymour Reservoir #2 Dam, located in Oxford, Connecticut, was completed in 1948 and serves as a critical water supply source for the region.
°F
°F
mph
Wind
%
Humidity
Summary
This masonry dam stands at a height of 31 feet and has a storage capacity of 590 acre-feet, with a normal storage level of 520 acre-feet. The dam has a surface area of 23 acres and drains an area of 1.16 square miles, making it a significant water resource infrastructure in the area.
With a spillway width of 26 feet and a maximum discharge capacity of 500 cubic feet per second, Seymour Reservoir #2 Dam is designed to manage water flow effectively and ensure the safety of the surrounding areas. The dam is regulated by the Connecticut Department of Energy and Environmental Protection (DEEP) and undergoes regular inspections to assess its condition. As of the last inspection in April 2015, the dam was rated as being in fair condition with a significant hazard potential, highlighting the importance of ongoing maintenance and monitoring to safeguard the community and environment.
Despite its age, Seymour Reservoir #2 Dam continues to play a crucial role in providing reliable water supply to the residents of New Haven County. The dam's presence underscores the intersection of water resource management and climate resilience, as it serves as a key infrastructure asset in the face of changing climate patterns and water availability challenges. As efforts to enhance dam safety and efficiency evolve, Seymour Reservoir #2 Dam remains a testament to the vital role of such structures in sustaining water resources for future generations.
Year Completed |
1948 |
Dam Length |
900 |
Dam Height |
31 |
River Or Stream |
UNNAMED |
Primary Dam Type |
Masonry |
Surface Area |
23 |
Drainage Area |
1.16 |
Nid Storage |
590 |
Hazard Potential |
Significant |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Naugatuck River At Beacon Falls
|
258cfs |
Housatonic River At Stevenson
|
455cfs |
Pomperaug River At Southbury
|
71cfs |
Mill R Nr Hamden
|
20cfs |
Pootatuck R At Sandy Hook
|
24cfs |
Weekeepeemee River At Hotchkissville
|
21cfs |
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.
Seymour Reservoir #2 Dam
Lake Housatonic
Victory Memorial Park
Matthies Park
Hummel Little League Park
Chatfield Street Playground
Breen Field
Reservoir Number 2
Reservoir Number 1
Seymour Reservoir Number 1
Seymour Reservoir Number 4
Carrington Pond