Due to the fact that over an estimated 59% of the recent Queensland floods were caused by runoff from Wivenhoe Dam, a viable solution would be to have secondary, backup dams in place in case of overflow of the main dam. In the case of Wivenhoe Dam, Lake Samsonvale and North Pine Dam are feasible. Although as of 2009 Samsonvale was at 100% capacity, it is connected directly to the coast and these rivers would be used to drain it. Also, Lake Kurwongbah has approximately 2000 ML free and is also connected to the coast.My proposal is to link these three dams via artificial rivers. These rivers would add extra space to the dam capacity, (around 885ML) and also allow inland dams to be drained at the coast. In addition, if all else fails, water can be diverted through the river connecting Wivenhoe to Samsonvale anyway. The mountains would contain much of the water.See the images attached for the proposed route of the river between Lakes Wivenhoe and Samsonvale. Note that it follows the lie of the land as much as possible to contain floods.
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