A 2000km project designed to help native fish species travel up the River Murray was recently launched in Waikerie, South Australia, by SA Water.
It is the only project of its kind in Australia and one of the only fishway projects in the world to focus on protecting native fish rather than commercial species.
The Sea to Hume fishway program has been 10 years in the making and has restored fish passages from the Murray Mouth in South Australia to the Hume Dam on the border of NSW and Victoria. It includes 17 fishways designed to help native fish species navigate major weirs and barrages on the River Murray.
The construction caters for many types of fish. There are fish locks for small fish such as Australian smelt, Denil fishways for larger fish such as perch and bream, and vertical slot fishways suitable for a range of sizes and species including lamprey and mulloway.
The installation of these fishways allows the fish to migrate upstream for breeding, safety and to establish new territories. They also help in the management of invasive species like carp, with specialised separation structures in use at several of the fishways.
The new fishways will help to increase the population and distribution of more than 25 species of native fish such as Murray cod and golden perch by taking out man-made obstacles along the river system, says SA Water.
The project was funded by the Living Murray program and supported through $70 million of funding from the Federal Government and the governments of SA, NSW and Victoria.