Team Logo. The Potomac Cannons were a team in the Carolina League. They were the High-A affiliate of the Cincinnati Reds. In 2005 they changed their name to the Potomac Nationals. Retrieved from "https://prosportsteams.fandom.com/wiki/Potomac_Cannons?oldid=9997" Categories: Former CarL Teams Teams in Virginia Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.