Lake Conewago
Lake Conewago is an earth dam located in Lebanon County, Pennsylvania, built in 1919. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lake Conewago
The primary purpose of Lake Conewago is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Eastern Enterprises, Inc. (private). It impounds the Conewago Creek.
The dam stands 18 feet tall and stretches 270 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 96 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1919, 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 03/29/2021.
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Location
| State | Pennsylvania |
| County | Lebanon |
| River/Stream | Conewago Creek |
| Coordinates | 40.24417, -76.47778 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 270 ft |
| Year Completed | 1919 (107 years old) |
Storage & Hydraulics
| NID Storage | 96 acre-ft |
| Max Storage | 96 acre-ft |
| Normal Storage | 77 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 1 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | EASTERN ENTERPRISES, INC. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/29/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | PA00593 |
| Federal ID | PA00593 |
| More Info | State Dam Safety Program |