 A further improvement was made in 1951 when a concrete @-@ lined channel was constructed to divert stream flow from the nearby Kangaroo Gully catchment . The Canning Dam and reservoir was Perth 's primary source of water until the boom growth of the city in the 1960s and the completion of Serpentine Dam in 1961 . In 1975 the reservoir was connected to Perth 's Integrated Water Supply Scheme by the Canning Tunnel . Prior to its opening water had flowed through the Canning Contour Channel to Gosnells . 
 A further improvement was made in 1951 when a concrete @-@ lined channel was constructed to divert stream flow from the nearby Kangaroo Gully catchment . The Canning Dam and reservoir was Perth <a href='null_genetive' title='1'><mark>'s</mark></a>primary source of water until the boom growth of the city in the 1960s and the completion of Serpentine Dam in 1961 . In 1975 the reservoir was connected to Perth <a href='null_genetive' title='2'><mark>'s</mark></a>Integrated Water Supply Scheme by the Canning Tunnel . Prior to its opening water <a href='been_done' title='3'><mark>had</mark></a> flowed through the Canning Contour Channel to Gosnells . 
A further improvement was made in 1951 when a concrete @-@ lined channel was constructed to divert stream flow from the nearby Kangaroo Gully catchment . da Canning Dam and reservoir was Perth  primary source of water until tdaboom growth of the city in thda960s and thedampletion of Serpentine Dam in 1961 . In 1975 the reservoir was connected to Perth  Integrated Water Supply Scheme by the daning Tunnel . Prior to its opening water done flowed through the Cdaing Contour Channel to Gosnells .