Lake Jo-Ann, located in Peters Township, Pennsylvania, is a private recreational lake regulated by the Pennsylvania Department of Environmental Protection. Built in 1950, this Earth dam stands at a height of 16 feet and has a length of 515 feet, providing a storage capacity of 187 acre-feet and a surface area of 14 acres. The dam is primarily used for recreation purposes, offering opportunities for boating, fishing, and other outdoor activities.

With a drainage area of 1.62 square miles, Lake Jo-Ann has a high hazard potential but is currently in satisfactory condition, according to the most recent inspection in November 2020. The dam underwent structural modifications in 2007 to ensure its safety and functionality. Despite its high hazard potential, the dam's emergency action plan status, risk assessment, and inundation maps are currently unlisted, suggesting the need for further evaluation and potential risk management measures.

Enthusiasts of water resources and climate will find Lake Jo-Ann to be an intriguing site for recreational activities, while also serving as a case study in dam management and safety. As a privately owned lake under state jurisdiction, it highlights the importance of regulatory oversight and maintenance to ensure the safety of both the structure and the surrounding community. Further research and monitoring may be necessary to assess and mitigate potential risks associated with this picturesque water resource.