Lake Pocatello Dam
Lake Pocatello Dam is an earth dam located in Orange County, New York, built in 1922. It carries a Significant hazard potential classification and has a poor condition assessment.
About Lake Pocatello Dam
The primary purpose of Lake Pocatello Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Estate Of Thomas D'amato (private). It impounds the Tr-monhagen Brook near Middletown.
The dam stands 14 feet tall and stretches 450 feet across, creates a reservoir covering 24 acres, has a maximum storage capacity of 136 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1922, the structure is over a century old.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 04/03/2025.
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Location
| State | New York |
| County | Orange |
| Nearest City | Middletown |
| River/Stream | Tr-monhagen Brook |
| Coordinates | 41.43333, -74.46056 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 450 ft |
| Year Completed | 1922 (104 years old) |
Storage & Hydraulics
| NID Storage | 136 acre-ft |
| Max Storage | 136 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 24 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 550 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Estate of THOMAS D'AMATO |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 04/03/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NY01102 |
| Federal ID | NY01102 |
| More Info | State Dam Safety Program |