Barnett is a private earth dam located in Lancaster, Pennsylvania, specifically in West Cocalico Township. This dam sits along the TR Cocalico Creek and serves primarily for recreational purposes. With a height of 26 feet and a length of 440 feet, Barnett offers a storage capacity of 84 acre-feet, with a normal storage level of 60 acre-feet. The dam covers a surface area of 8.25 acres and has a drainage area of 0.43 square miles.

Managed by the Pennsylvania Department of Environmental Protection, Barnett is regulated and inspected by state authorities to ensure its safety and compliance with environmental standards. The dam has been assessed to have a fair condition, with a high hazard potential, meaning that failure could result in significant property damage and potential loss of life. The last inspection of Barnett was conducted in December 2020, with an inspection frequency of once per year.

For water resource and climate enthusiasts, Barnett presents an interesting case study for examining the management and regulation of private dams in Pennsylvania. With its recreational purpose and its location along the TR Cocalico Creek, Barnett plays a role in providing water storage and flood control in the area. Understanding the design, condition, and hazard potential of dams like Barnett is crucial for ensuring the safety and sustainability of water resources in the region.