Terrace Lake Dam
Terrace Lake Dam is an earth dam located in Morris County, New Jersey. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Terrace Lake Dam
The primary purpose of Terrace Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Cambridge Heights At Terrace Lake Hoa (private). It impounds the Pequannock River.
The dam stands 7 feet tall and stretches 737 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 21 acre-feet, and collects water from a drainage area of 0 square miles.
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 10/01/2023.
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Location
| State | New Jersey |
| County | Morris |
| River/Stream | Pequannock River |
| Coordinates | 41.01082, -74.35922 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 737 ft |
Storage & Hydraulics
| NID Storage | 21 acre-ft |
| Max Storage | 21 acre-ft |
| Normal Storage | 11 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 600 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Cambridge Heights at Terrace Lake HOA |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/01/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00542 |
| Federal ID | NJ00542 |
| More Info | State Dam Safety Program |