Lock 4 - Stillwater
New York, Rensselaer County, Hudson River
Location
| State | New York |
| County | Rensselaer |
| River | Hudson River |
| Coordinates | 42.93660, -73.65360 |
Physical Characteristics
| NID Height | 5 ft |
| Dam Height | 5 ft |
| Dam Length | 820 ft |
| NID Storage | 3,150 acre-ft |
| Max Storage | 3,150 acre-ft |
| Surface Area | 1,500 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Satisfactory |
| EAP Status | Yes |
| Last Inspection | September 20, 2022 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1955 |
| Primary Purpose | Hydroelectric |
| Dam Type | Concrete |
| Owner Type | State |
| Owner | New York State Canal Corporation |
| Other Name | Stillwater Dam |
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.