What impact did the Snowy Mountain Scheme have on the environment?

The Snowy Mountain Scheme significantly altered the Australian environment, primarily through the construction of dams, tunnels, and reservoirs, which impacted natural waterways and ecosystems. It led to the flooding of valleys and changes in local flora and fauna habitats, as well as alterations in water flow patterns. While it provided substantial hydroelectric power and irrigation benefits, the project also raised concerns about landscape degradation and biodiversity loss in the affected areas. Additionally, the introduction of non-native species for agricultural purposes further complicated the environmental impact.