Lake Oneida, located in Oakland Township, Pennsylvania, is a private water supply reservoir regulated by the Pennsylvania Department of Environmental Protection. This Earth-type dam, completed in 1918, stands at a height of 38 feet and spans 830 feet, holding a maximum storage capacity of 3,350 acre-feet. With a normal storage capacity of 1,762 acre-feet and a surface area of 155 acres, Lake Oneida draws its water supply from the Connoquenessing Creek, serving as a vital resource for the local community.

The dam at Lake Oneida has a high hazard potential but is currently in satisfactory condition, having undergone structural modifications in 2006. The last inspection in June 2020 deemed the dam to be in compliance with safety standards, with an inspection frequency of once a year. While an Emergency Action Plan (EAP) is not currently prepared, the reservoir's risk assessment and management measures are yet to be determined. The dam's location within Butler, Pennsylvania, highlights its importance in water resource management and the need for continued monitoring and maintenance to ensure the safety of surrounding areas.

As climate change impacts water resources, the significance of dams like Lake Oneida in ensuring water supply and flood control cannot be overstated. With its historical significance dating back over a century, Lake Oneida stands as a testament to human ingenuity in harnessing and managing water resources. As enthusiasts of water resources and climate, understanding the infrastructure and regulatory aspects of Lake Oneida provides valuable insights into the intersection of environmental conservation and sustainable water management in the face of a changing climate.