Tuna (eels) in the Aka Aka catchment safely passed through the council’s new enclosed Archimedes screw pump to swim another day. Pump: Aerial of Mangawhero pump station A monitoring programme was held ...
A new fish-friendly screw pump to be installed in Aka Aka, near Rangiriri, is big enough to pass a small shark, laughs Waikato Regional Council project manager Richard Dodera. The Archimedes screw ...
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