Over new year, I drove from Adelaide to Melbourne and back. Over Murray Bridge (a literal bridge, and a town, called the same thing) - we could see the Levee when heading to Melbourne. On the way back, about 8 days later, there was no Levee visible, and the water level was substantially higher.
Nature does some crazy, irrational things that we just cannot fathom.
That floodwater made me change my tour plans around Euroa in October. Took two months for the flood waters to travel 800 kms to Murray Bridge
Hopefully some water can stay in the river system longer term. It will certainly be healthy for the eco system.
This creek flows West to the Darling/Murray Basin - will take 6 months to reach the sea. Adding 53% capacity is bad for downstream for years and years.