Muddy Run East Dike, located in Lancaster, Pennsylvania, is a rockfill dam built by the Philadelphia Electric Company in 1967 for hydroelectric purposes on the Susquehanna River. Standing at 12 feet high and stretching 800 feet in length, the dam has a storage capacity of 60,500 acre-feet and covers an area of 1,000 acres. With a low hazard potential and moderate risk assessment, the dam is inspected every three years by the Federal Energy Regulatory Commission to ensure its structural integrity and safety.

Although not state-regulated, Muddy Run East Dike plays a crucial role in managing water resources and generating hydroelectric power in the region. Its uncontrolled spillway and proximity to the Cold Cabin Boat Launch make it a notable feature along the Susquehanna River. With its history of construction and maintenance overseen by federal agencies, the dam serves as a reminder of the intersection between water resource management, climate considerations, and energy production in Pennsylvania.

As a key component of the region's water infrastructure, Muddy Run East Dike highlights the importance of balancing environmental concerns with energy needs. With its design focused on hydroelectric power generation, the dam showcases the innovation and technical expertise required to harness natural resources sustainably. As climate change continues to impact water resources, structures like Muddy Run East Dike will play an increasingly vital role in ensuring water security and clean energy production for years to come.