Lake Peekskill Dam
Lake Peekskill Dam is a concrete dam located in Putnam County, New York, built in 1928. It carries a High hazard potential classification and has a poor condition assessment.
About Lake Peekskill Dam
The primary purpose of Lake Peekskill Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Peekskill Improvement District (local government). It impounds the Hollowbrook near Lake Peekskill.
The dam stands 16 feet tall and stretches 120 feet across, creates a reservoir covering 52 acres, has a maximum storage capacity of 1,357 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1928, the structure is well-established, with more than 75 years of service.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 03/24/2025.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The New York dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | New York |
| County | Putnam |
| Nearest City | Lake Peekskill |
| River/Stream | Hollowbrook |
| Coordinates | 41.33667, -73.88000 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 120 ft |
| Year Completed | 1928 (98 years old) |
Storage & Hydraulics
| NID Storage | 1,357 acre-ft |
| Max Storage | 1,357 acre-ft |
| Normal Storage | 1,074 acre-ft |
| Surface Area | 52 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 589 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE PEEKSKILL IMPROVEMENT DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 03/24/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY00087 |
| Federal ID | NY00087 |
| More Info | State Dam Safety Program |