Lake Letterkenny Dam is a stone dam located in Franklin County, Pennsylvania, built in 1945. It carries a Undetermined hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 201 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic rockfill embankment section and the water level is illustrative.
About Lake Letterkenny Dam
The primary purpose of Lake Letterkenny Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by U.s. Department of Defense (federal). It impounds the Tr Rocky Spring Branch.
The dam stands 16 feet tall and stretches 201 feet across, and has a maximum storage capacity of 60 acre-feet. Completed in 1945, the structure is well-established, with more than 75 years of service.
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Location
| State | Pennsylvania |
| County | Franklin |
| River/Stream | Tr Rocky Spring Branch |
| Coordinates | 39.98306, -77.68806 |
Physical Characteristics
| Dam Type | Stone |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 201 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 60 acre-ft |
| Max Storage | 60 acre-ft |
| Normal Storage | 48 acre-ft |
Ownership & Safety
| Purpose | Recreation |
| Owner | U.s. Department of Defense |
| Owner Type | Federal |
| Hazard Classification | Undetermined |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | PA00847 |
| Federal ID | PA00847 |
| More Info | State Dam Safety Program |