Cornwall Tailings, located in Cornwall Borough, Pennsylvania, is a rockfill dam completed in 1961 with a height of 200 feet and a length of 3800 feet. This structure serves the primary purpose of managing tailings, with a storage capacity of 3880 acre-feet and a surface area of 60 acres. The dam is regulated by the Pennsylvania Department of Environmental Protection and is subject to regular inspections to ensure its safety and compliance with state regulations.

The Cornwall Tailings dam poses a high hazard potential due to its size and location near Berhard Creek. Despite this, it currently has a fair condition assessment, indicating that it is being maintained adequately. The last inspection was conducted in March 2021, with a recommended frequency of once per year. While there are no emergency action plans or risk assessment reports available for the dam, it is reassuring to note that it meets state permitting, inspection, and enforcement requirements.

Enthusiasts of water resources and climate will find Cornwall Tailings to be an intriguing case study in tailings management and dam safety. The combination of its historical significance, large storage capacity, and high hazard potential make it a noteworthy structure in Lebanon County, Pennsylvania. As climate change continues to impact water resources, understanding the infrastructure and regulations surrounding dams like Cornwall Tailings becomes increasingly vital for ensuring the safety and sustainability of our water supply.