Safe Harbor is a gravity dam located on the Susquehanna River in Lancaster, Pennsylvania, with a primary purpose of hydroelectric power generation.
Wind
Humidity
Completed in 1930 by the Safe Harbor Water Power Corporation, this dam stands 75 feet tall and spans 4869 feet, with a storage capacity of 144,000 acre-feet. The dam also serves recreational and water supply purposes, covering a surface area of 7360 acres and draining a 26117-acre watershed.
Managed by the Federal Energy Regulatory Commission, Safe Harbor has a controlled spillway with a width of 1810 feet and 31 outlet gates for water control. The dam poses a significant hazard potential and is rated as having very high risk, requiring regular inspections and emergency action preparedness. Despite its age, Safe Harbor continues to play a vital role in the region's water resource management and climate resilience efforts, showcasing the enduring importance of sustainable hydroelectric infrastructure in ensuring safe and reliable water supplies for communities.
Year Completed |
1930 |
Dam Length |
4869 |
Dam Height |
75 |
River Or Stream |
Susquehanna River |
Primary Dam Type |
Gravity |
Surface Area |
7360 |
Drainage Area |
26117 |
Nid Storage |
144000 |
Outlet Gates |
Other Controlled - 31 |
Hazard Potential |
Significant |
Nid Height |
75 |
Conestoga River At Conestoga
|
244cfs |
Pequea Creek At Martic Forge
|
63cfs |
Conestoga River At Lancaster
|
129cfs |
Muddy Creek At Castle Fin
|
74cfs |
Susquehanna River At Marietta
|
12900cfs |
Pequea Creek Near Ronks
|
29cfs |