Witmer, located in Hamilton Township, Pennsylvania, is a private Earth dam constructed in 1941 primarily for recreation purposes. This structure spans 270 feet in length and stands at a height of 9 feet, providing a storage capacity of 61 cubic acre-feet. Situated on Cherry Creek, Witmer serves as a recreational reservoir with a surface area of 12 acres and a drainage area of 1.1 square miles.

Managed and regulated by the by the Pennsylvania Department of Environmental Protection, Witmer has been classified as having a low hazard potential with its condition yet to be rated. The dam undergoes inspections every five years, with its last assessment conducted in October 2020. Despite its age, Witmer continues to provide valuable recreational opportunities while remaining a vital component of the local water resource infrastructure.

With its proximity to Monroe, Pennsylvania, Witmer offers a peaceful escape for outdoor enthusiasts and climate advocates alike. The dam's presence on Cherry Creek not only enhances the surrounding natural landscape but also underscores the importance of responsible water resource management in the region. As a historical landmark with a rich legacy dating back to the early 20th century, Witmer stands as a testament to the enduring connection between water resources and environmental sustainability in the Keystone State.