Sagamore Lake Dam is a concrete dam located in Putnam County, New York, built in 1946. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 22 ft22 ft tall and 275 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Sagamore Lake Dam
The primary purpose of Sagamore Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Sagamore Community Association (private). It impounds the West Branch Croton River near Town of Kent.
The dam stands 22 feet tall and stretches 275 feet across, creates a reservoir covering 96 acres, has a maximum storage capacity of 1,076 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1946, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 03/27/2024.
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Location
| State | New York |
| County | Putnam |
| Nearest City | Town of Kent |
| River/Stream | West Branch Croton River |
| Coordinates | 41.47194, -73.77556 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 275 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 1,076 acre-ft |
| Max Storage | 1,076 acre-ft |
| Normal Storage | 880 acre-ft |
| Surface Area | 96 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 3,190 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake Sagamore Community Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/27/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00313 |
| Federal ID | NY00313 |
| More Info | State Dam Safety Program |