Lake Grinnell Dam
New Jersey — Sussex County — Wallkill River-TR
Location
| State | New Jersey |
| County | Sussex |
| River | Wallkill River-TR |
| Coordinates | 41.10137, -74.63590 |
Physical Characteristics
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 195 ft |
| NID Storage | 150 acre-ft |
| Max Storage | — |
| Surface Area | 46 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Poor |
| EAP Status | Yes |
| Last Inspection | April 12, 2024 |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1900 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Lake Grinnell Homeowners Association |
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.