Lake Mahopac Dam
New York — Putnam County — MUSCOOT RIVER
Location
| State | New York |
| County | Putnam |
| River | MUSCOOT RIVER |
| Coordinates | 41.37417, -73.75417 |
Physical Characteristics
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 190 ft |
| NID Storage | 17,850 acre-ft |
| Max Storage | 17,850 acre-ft |
| Surface Area | 583 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | March 17, 2025 |
| Inspection Frequency | 4 |
Dam Information
| Year Completed | 1940 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | TOWN OF CARMEL |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.