Timber is a privately owned dam located in Chester, Pennsylvania, with a primary purpose of flood risk reduction. Built in 1986, this earth dam stands at 19 feet tall and extends for 410 feet, providing a storage capacity of 38 acre-feet. The dam serves to control the flow of TR Culbertson Run, contributing to the protection of the surrounding area from potential flooding events. Despite its significant hazard potential, Timber has been assessed as being in satisfactory condition, with inspections conducted every two years to ensure its continued safety and functionality.

Managed by the Pennsylvania Department of Environmental Protection, Timber is subject to state regulation and permitting, with regular inspections and enforcement practices in place to uphold safety standards. The dam also offers recreational opportunities in addition to its flood risk reduction function, highlighting its multi-faceted role in the community. With its location in East Brandywine Township and proximity to the Baltimore District, Timber plays a crucial role in water resource management and climate resilience efforts in the region. As a pivotal structure in the area's water infrastructure, Timber serves as a testament to the importance of effective dam management in safeguarding communities and ecosystems from the impacts of flooding.