Rock Ridge Lake Dam
New Jersey — Morris County — Denney Brook
Location
| State | New Jersey |
| County | Morris |
| River | Denney Brook |
| Coordinates | 40.91135, -74.46343 |
Physical Characteristics
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 235 ft |
| NID Storage | 174 acre-ft |
| Max Storage | — |
| Surface Area | 17 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Poor |
| EAP Status | Yes |
| Last Inspection | April 15, 2025 |
| Inspection Frequency | 2 |
Dam Information
| Year Completed | 1949 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Rock Ridge Community Club |
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.