Rock Lodge Pond Dam
Rock Lodge Pond Dam is an earth dam located in Sussex County, New Jersey, built in 1907. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Rock Lodge Pond Dam
Rock Lodge Pond Dam is a dam in Sussex, New Jersey. The dam is owned by Rock Properties, Inc. (private). It impounds the Small Branch Pequannock River near Hardyston.
The dam stands 15 feet tall and stretches 300 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 13 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1907, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 10/07/2023.
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Location
| State | New Jersey |
| County | Sussex |
| Nearest City | Hardyston |
| River/Stream | Small Branch Pequannock River |
| Coordinates | 41.07095, -74.53285 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 300 ft |
| Year Completed | 1907 (119 years old) |
Storage & Hydraulics
| NID Storage | 13 acre-ft |
| Max Storage | 13 acre-ft |
| Normal Storage | 9 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 59 cfs |
Ownership & Safety
| Owner | Rock Properties, Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/07/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00993 |
| Federal ID | NJ00993 |
| More Info | State Dam Safety Program |