It's very unlike me but I hadn't actually considered the down stream effects of this dam. Now that you point it out, it's completely obvious how great the effect will be on the Great Sandy Straits if there is no river feeding into it. The annoying part about this is the government has a Hydrology lab that can make scale models of entire basins and run rivers, floods, whatever through them to see what happens. Yet it's never done often enough.
I wonder what effect this lack of flow, sediment and nutrients into the straits and Harvey Bay will have. Considering Stradbroke, Moreton and Fraser Islands are all the result of sand from the Clarence River being taken north with northern drift, it makes me wonder what similar effects are felt - and would be lost - by the GBR, etc. by the termination of flow from the Mary River.
I wonder what effect this lack of flow, sediment and nutrients into the straits and Harvey Bay will have. Considering Stradbroke, Moreton and Fraser Islands are all the result of sand from the Clarence River being taken north with northern drift, it makes me wonder what similar effects are felt - and would be lost - by the GBR, etc. by the termination of flow from the Mary River.