Tingley Lake, located in Harford Township, Pennsylvania, is a privately owned body of water primarily used for recreation. The dam at Tingley Lake is a stone structure with a height of 7 feet and a length of 75 feet, completed in 1919. The lake has a storage capacity of 1040 acre-feet and covers an area of 42 acres, with a drainage area of 1.4 square miles.

The Pennsylvania Department of Environmental Protection regulates Tingley Lake, ensuring that it meets state inspection and enforcement standards. The dam at Tingley Lake has a low hazard potential and is currently in fair condition. The last inspection took place in June 2018, with a scheduled inspection frequency of 5 years. The lake serves as a vital recreational resource in the region, offering opportunities for fishing, boating, and other water-based activities.

Despite its modest size, Tingley Lake plays a significant role in providing recreational opportunities for the surrounding community. Its historical stone dam, built over a century ago, serves as a reminder of the importance of proper water resource management. As climate change continues to impact water resources, ensuring the safety and integrity of structures like the dam at Tingley Lake will be essential in preserving this valuable natural asset for future generations.