Rock Island Lake Dam
New Jersey — Sussex County
Location
| State | New Jersey |
| County | Sussex |
| Coordinates | 41.04087, -74.58413 |
Physical Characteristics
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 500 ft |
| NID Storage | 61 acre-ft |
| Max Storage | 61 acre-ft |
| Surface Area | 11 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Poor |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1940 |
| Primary Purpose | Recreation |
| Dam Type | — |
| Owner Type | — |
| Owner | Rock Island Lake Owners Assoc. |
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.