Potomac Ave is an island platformed Washington Metro station in the Capitol Hill neighborhood of Southeast Washington, D.C., United States. The station was opened on July 1, 1977, and is operated by the Washington Metropolitan Area Transit Authority (WMATA). Providing service for both the Blue and Orange Lines. The station serves a dense residential area of Southeast Washington around Potomac Avenue and is located at 14th and G Streets. Nearby is the Congressional Cemetery.