A new dissipator in the form of an excavated pool will be constructed at the end of the concrete spillway to manage erosion and improve fish migration downstream. We will also be making improvements to the creek channel downstream.
Currently, there is potential for fish to become stranded below the concrete spillway after flood events in waterholes that can be found in the creek bed. The dissipator will be excavated in the existing rock to break up the energy from flood flows and will help fish travel downstream. We will also be providing safe access for rescuing any stranded fish if required. Design plans (below) for the dissipater are being finalised to provide the best solution for ongoing operation.
As part of the dissipator improvements some of the excavated material will be used to stabilise the downstream creek banks which will help to minimise erosion.
