Carbondale No 4, a privately owned dam located in Lackawanna, Pennsylvania, stands as a historic structure completed in 1892 for the primary purpose of water supply. Nestled along Racket Brook in Carbondale City, this Earth-type dam boasts a height of 28 feet and a length of 480 feet, with a storage capacity of 1071 acre-feet. Despite its age, Carbondale No 4 remains a crucial asset for the region, holding a normal storage volume of 752 acre-feet across its 62-acre surface area.

Although Carbondale No 4 has undergone modifications in 2007 to enhance its hydraulic capabilities, recent assessments have revealed a high hazard potential and poor condition. The Pennsylvania Department of Environmental Protection regulates this dam, ensuring its compliance with state standards for inspection, maintenance, and enforcement. With a designated inspection frequency and a last assessment conducted in June 2020, Carbondale No 4 continues to play a vital role in water resource management within the area.

As climate change continues to impact water resources, the maintenance and upkeep of structures like Carbondale No 4 become increasingly critical. With its historical significance and essential role in providing water supply, efforts to improve its condition and mitigate potential risks are essential for safeguarding the surrounding community and ensuring the resilience of this vital infrastructure in the face of evolving environmental challenges.