Sydney Morning Herald: RISING average temperatures are reducing run-off into Sydney dams when it rains, putting the future of the city’s water supplies under a cloud. As a result, Sydney Water wants to operate the Kurnell desalination plant even when there are several years’ water supply in the Sydney dam network. Trials are under way at the desalination plant, which is expected to be in full operation soon. The State Government is yet to decide how soon the desalination plant will begin operations …