(Not to be confused with South Fountain Avenue Historic District.) Fountain Avenue is a north-south running street in Brooklyn, New York. Traffic on the avenue is bidirectional for most of its length. Its north end is at the intersection of Atlantic Avenue and Conduit Avenue. The south end is Exit 15 off the Belt Parkway. The area is mostly composed of landfill and has areas of swampland-like forest growth where improvements are contemplated.