Thursday, 16 June 2016

Fish Friendly Flood Gates

Another one of Hamish's projects is to oversee the installation of Fish Friendly Flood Gates (FFGs).


These gates close slowly during flooding or tidal movements to allow fish easy passage upstream.  This gate has been installed just outside of Te Puke.

There is a lot of science involved in these gates...
Water flow
Forces
Weights
Cantilevers
Tidal effects
Fish monitoring



Just the right amount of weight is required to make them work properly.
Hamish is doing a bucket test to work out how much more weight is needed on this gate installation.







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