The Mitchell Sludge Sedimentation Pond, located in Union Township, Pennsylvania, is a privately owned earth dam structure designed for sedimentation purposes along the Monongahela River. Completed in 1982, this 50-foot high dam has a storage capacity of 16 acre-feet and covers a surface area of 0.5 acres. With a drainage area of 0.11 square miles, the pond plays a crucial role in managing sedimentation and water quality in the region.

Managed by the Pennsylvania Department of Environmental Protection, the Mitchell Sludge Sedimentation Pond is considered to have a significant hazard potential, although its condition assessment is deemed satisfactory. Regular inspections are conducted to ensure its structural integrity and operational effectiveness, with the last inspection taking place in November 2017. Despite its private ownership, the dam is regulated and permitted by the state, reflecting a commitment to environmental protection and water resource management.

As a key component of the water infrastructure in Washington County, Pennsylvania, the Mitchell Sludge Sedimentation Pond serves as a vital resource for sediment control and water quality improvement in the region. With its strategic location along the Monongahela River, the dam plays a crucial role in managing sedimentation, highlighting the importance of proactive maintenance and regulatory oversight to ensure its continued effectiveness in safeguarding water resources and mitigating environmental impacts.