Blackwood Creek 63-A is a locally owned and state-regulated earth dam located in McCook, Nebraska. Designed by USDA NRCS and completed in 1989, this flood risk reduction structure has a height of 55 feet and a length of 1065 feet, providing a storage capacity of 2522.2 acre-feet. With a drainage area of 11.8 square miles and a maximum discharge of 6536 cubic feet per second, the dam serves to protect the surrounding area from potential flooding events.

Managed by the Nebraska Department of Natural Resources, Blackwood Creek 63-A has a low hazard potential and is deemed to be in satisfactory condition as of the last inspection in June 2020. The dam's purpose is solely for flood risk reduction, with a normal storage capacity of 16 acre-feet and a surface area of 4 acres. While the structure has not been modified in recent years, it undergoes inspections every 5 years to ensure its continued safety and functionality. Overall, Blackwood Creek 63-A stands as a crucial component of water resource management in the area, safeguarding against potential flooding and promoting environmental sustainability.