The Southgate Fountain was located in the Snowden Gardens on the south west side of the Princes Bridge. It was removed around 1976 for the construction of the Arts Centre Concert Hall, Hamer Hall and has not been seen since. This is a history of the fountain.
In May 1958, the City Development Association offered to build a four-pool fountain in the Snowden Gardens, with a cost of £20,000. The Age reported that The offer, said C.D.A. Secretary (Mr R.A. Gardner) was "to initiate a programme of fountain building in the hope that others will follow." In response Cr Brens, Chairman of the City Council Parks and Gardens Committee was reported as saying Whether Snowden Gardens is the right place for it or not, I am not sure. This area is used extensively by lunchtime crowds in fine weather. The fountain might be incorporated as part of the Wirth's Park development scheme (1). The National Gallery of Victoria is located in the Wirth's Park site (2).
The fountain was officially 'turned on' by the Governor of Victoria, Sir Dallas Brooks, on November 1, 1959. The Age reported that the fountain, which cost £23,000, was given to the City of Melbourne by an anonymous donor, described as a man who has a great love of Melbourne and desires to see its advancement. (9)
The same report had this description of the fountain -
The water jets are automatically controlled. On a still day, time clock mechanisms cause the water to rise and fall in accordance with a regular, slow rhythm. As the wind rises, the higher jets are cut off until, in a gale, the curtains are reduced to a waterfall. The water falls into three cone-shaped bowls - the largest 60 feet in diameter, one below the other, on the sloping laws of Snowden Gardens. (10)
At the unveiling the hope Melbourne would develop into a 'City of Fountains' was expressed by the Chairman of the City Development Association, Mr R.F.G Fogarty. Sadly, this fountain barely survived 25 years. In 1974, the City of Melbourne presented the Snowden Gardens to the State Government to build the Arts Centre Concert Hall (Hamer Hall). (11)
In December 1975, The Age reported that the existing fountain in Snowden Gardens would be removed to the other side of the new plateau, beside the concert-hall complex of the centre (12). The three acre garden 'plateau' was to provide a pedestrian link from the Snowden Gardens to the Arts Centre. This work was expected to commence in March 1976 and this is the likely date that the fountain was dismantled and put into storage, awaiting re-erection on the new site, which never happened.
Footnotes
(1) The Age, May 26, 1958 p. 5
(2) Wirth's Park - https://www.emelbourne.net.au/biogs/EM00095b.htm
(3) The Age, June 18, 1958, p. 4.
Sources
I found the following reports on the fountain in The Age on newspapers.com. View them here
Fountain site seen. The Age, June 18, 1958, p. 4.
Fountain to cost £16 weekly to run. The Age, November 6, 1958, p. 12.
Ornamental fountain for Gardens. The Age, November 18, 1958, p.11.
Name sought for fountain. The Age, January 22, 1959, p. 3.
Council names City Fountain. The Age, August 13, 1959, p.5
More gift fountains a possibility, The Age, August 20, 1959, p. 12
Vice-Regal. The Age, November 2, 1959, p. 2.
Froth. The Age, November 2, 1959, p. 2.
Fountain turned on. The Age, November 2, 1959, p. 3.
Land for the People. The Age, March 14, 1974, p. 14
Arts Centre will get Garden link by Richard Goodwin - The Age, December 24, 1975, p. 3.
City of Melbourne City Collection has 12 photographs of the construction of Southgate Fountain https://citycollection.melbourne.vic.gov.au/