Mountain Brook Dam
Mountain Brook Dam is an earth dam located in Putnam County, New York, built in 1997. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Mountain Brook Dam
The primary purpose of Mountain Brook Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Watchtower Bible And Tract Society Of New York Inc. (private). It impounds the Mountain Brook.
The dam stands 58 feet tall, creates a reservoir covering 2 acres, has a maximum storage capacity of 67 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1997, the structure is 29 years old.
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 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 01/24/2025.
At 58 feet, this dam is taller than 95% of all dams in the United States.
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 |
| River/Stream | Mountain Brook |
| Coordinates | 41.50194, -73.57806 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 58 ft |
| Dam Height | 58 ft |
| Year Completed | 1997 (29 years old) |
Storage & Hydraulics
| NID Storage | 67 acre-ft |
| Max Storage | 67 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 3,544 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | WATCHTOWER BIBLE AND TRACT SOCIETY of New York Inc. |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/24/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NY15003 |
| Federal ID | NY15003 |
| More Info | State Dam Safety Program |