Olyphant No 3, located in Lackawanna, Pennsylvania, is a state-regulated earth dam constructed in 1898 for recreational purposes along the Grassy Island Creek. With a dam height of 38 feet and a length of 760 feet, it provides a storage capacity of 157 acre-feet and covers a surface area of 10.2 acres. Despite its age, the dam is maintained in fair condition and undergoes inspections every two years to ensure its structural integrity.

Managed by the Pennsylvania Department of Environmental Protection, Olyphant No 3 poses a significant hazard potential due to its size and location in Jessup Borough. While its primary purpose is for recreation, the dam serves as a vital water resource for the surrounding area. Recognized for its contribution to the local community, the dam's historical significance and continued presence highlight the importance of sustainable water management practices in the face of climate change challenges.

As a focal point for water resource and climate enthusiasts, Olyphant No 3 stands as a testament to the intersection of human ingenuity and environmental stewardship. With ongoing efforts to monitor and maintain its condition, this earth dam remains a symbol of the delicate balance between harnessing water for recreational use and ensuring the safety and well-being of the local ecosystem.