Olyphant No 2 is a state-regulated dam located in Archbald Borough, Lackawanna County, Pennsylvania, along the Grassy Island Creek. Built in 1888 for recreation purposes, this earth dam stands at a height of 55 feet and has a storage capacity of 85.9 acre-feet. The dam covers a surface area of 1.47 acres and serves as a popular recreational spot in the area.

Despite its age, Olyphant No 2 is assessed to be in fair condition with a significant hazard potential. The dam undergoes inspections every two years, with the last inspection conducted in September 2020. It is regulated by the Pennsylvania Department of Environmental Protection, ensuring that it meets state regulatory standards for safety and maintenance. While no emergency action plan (EAP) has been prepared for the dam, it continues to be monitored for any potential risks.

With its historical significance and recreational value, Olyphant No 2 remains a vital water resource in Lackawanna County. Climate enthusiasts and water resource advocates can appreciate the rich history and engineering behind this dam, as well as the ongoing efforts to ensure its safety and functionality for the community.