Lanpher is a historic earth dam located in Shaler Township, Allegheny County, Pennsylvania, with a primary purpose of water supply. Completed in 1915, the dam stands at a height of 38 feet and spans 3425 feet in length, with a storage capacity of 470 acre-feet. Situated in the watershed of the Allegheny River, Lanpher is regulated by the Pennsylvania Department of Environmental Protection and undergoes regular inspections to ensure its structural integrity.

Despite its age, Lanpher dam has been assessed as satisfactory in condition, with a high hazard potential due to its location and purpose. The dam's emergency action plan status and risk assessment measures are currently unspecified, indicating a potential area for improvement in terms of preparedness for emergencies. The dam is not owned by a federal agency, emphasizing the crucial role of local government in managing and maintaining water resources for the surrounding community.

The presence of Lanpher dam serves as a vital component of the water supply infrastructure in the region, highlighting the importance of proper regulation and maintenance to ensure public safety and resource sustainability. With its rich history and critical role in water management, Lanpher represents a significant piece of Pennsylvania's environmental landscape that requires ongoing attention and investment to secure its continued operation for the benefit of the community.