RAAF Base Wagga at Forest Hill also expanded, with training of defence force aircraft technicians located there from 1969. After a series of major floods in the early 1950s, the City Council protected the city area on the south flood plain through construction of a levee, completed in 1962. The levee was designed to provide protection from floods at levels expected once every one hundred years. North Wagga Wagga was initially excluded from protection however by 1982 another levee was constructed to protect the village, although at a lower standard.
In 1971, following pressure from the Wagga Wagga community for a university, the teachers' college established in 1947 became the Riverina College of Advanced Education and was relocated to a site adjacent to the Wagga Agricultural College, with which it amalgamated in 1975. In 1989, the College amalgamated with the College of Advanced Education at Bathurst to become Charles Sturt University. In 1981, the New South Wales government forced the amalgamation of Wagga Wagga City Council with neighbouring Kyeamba Shire and Mitchell Shire to form the new City of Wagga Wagga Local government area, containing 4,886 square kilometres.
On 23 February 1993 Wagga Wagga was the first city in the world to be proclaimed as a Rotary Peace City, with a Rotary Peace Monument unveiled on the corner of The Esplanade and Best Street
