Timber Lake B is a privately owned Earth dam located in Buffalo Township, Pennsylvania. Completed in 1956, this recreational structure stands at a height of 25 feet and spans a length of 252 feet, holding a maximum storage capacity of 61 acre-feet. Situated on TR Buffalo Creek, the dam serves the primary purpose of providing recreational opportunities for the surrounding community. With a surface area of 4 acres and a drainage area of 0.58 square miles, Timber Lake B offers a serene environment for outdoor activities such as fishing, boating, and wildlife observation.

Maintained and regulated by the Pennsylvania Department of Environmental Protection, Timber Lake B has been assessed to have a low hazard potential and fair condition as of its last inspection in July 2016. The dam's Emergency Action Plan (EAP) status, risk assessment, and inundation maps are yet to be updated, emphasizing the importance of ongoing monitoring and management. Despite its modest size, Timber Lake B contributes to the local water resource system by providing a controlled storage capacity and recreational outlet for residents in Washington County, Pennsylvania.

As climate change continues to impact water resources and ecosystems, structures like Timber Lake B play a crucial role in sustainable water management and community resilience. With its historical significance and recreational value, this Earth dam serves as a reminder of the intersection between human infrastructure and natural landscapes. As enthusiasts in water resources and climate, understanding the functionality and maintenance of structures like Timber Lake B is essential for promoting informed decision-making and stewardship of our environment.