Ohau diversion wall
Photo of Ohau diversion wall.
https://oag.parliament.nz/2019/freshwater-clean-up/gfx/ohau-diversion-wall.jpg/view
https://oag.parliament.nz/2019/freshwater-clean-up/gfx/ohau-diversion-wall.jpg/@@download/image/Ohau-diversion-wall.jpg
Ohau diversion wall
Photo of Ohau diversion wall.