Lake drainage scheme to stop Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window) NO FLOWS: The CCMA has decided not to release further water from Lake Colac. Contact the authorby Greta Lannen October 4, 2023 The Lough Calvert Drainage Scheme has stopped operating at Lake Colac after two months. Unlock full access to Colac Herald - Subscribe today! Subscribe Now Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)