 On 18 May 1993, the City of Greater Geelong was formed by the amalgamation of a number of smaller municipalities with the former City of Geelong.The Waterfront Geelong redevelopment, started in 1994, was designed to enhance use and appreciation of Corio Bay and in 1995 the Barwon River overflowed in the worst flood since 1952.In 2004, Avalon Airport was upgraded to accommodate interstate passenger travel, providing a base for the low-cost airline Jetstar to serve the Melbourne and Geelong urban areas.