Dights Falls Fishway, Yarra River, Melbourne

Welcome to Dights Falls in the land of the Wurrundjeri people.

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This is no natural falls. It was built in the 1840s to supply a flour mill.

It might not look like much of a drop but many of South East Australia’s fish are small and relatively weak swimmers.

The obligatory tourist information board…

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As per best practice, the entrance on the downstream side is located as close as possible to the obstruction.

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This is a classic vertical-slot fishway. See the slot here, with size 10 feet for scale!

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It’s pretty turbulent down there…

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…and it’s a long way up for those little fishes, through over 25 pools and a tight bend…

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…just to be faced with a heap of trash at the exit!

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Overall it looks like a nice project but monitoring so far has yielded mixed results (see Borg et al., 2014), likely due to excessive turbulence intensities near the entrance:

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Monitoring and adaptive management is ongoing.

 

Martin \\ Melbourne
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