Lake Deforest Dam
New York — Rockland County — HACKENSACK RIVER
Location
| State | New York |
| County | Rockland |
| River | HACKENSACK RIVER |
| Coordinates | 41.10620, -73.96746 |
Physical Characteristics
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 1,330 ft |
| NID Storage | 36,362 acre-ft |
| Max Storage | 36,362 acre-ft |
| Surface Area | 900 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | October 10, 2024 |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1956 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Public Utility |
| Owner | Veolia Water NEW YORK, Inc. |
| Other Name | Deforest Lake |
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.