The Snowy Mountains Scheme consists of 145 km of inter-connected tunnels and pipelines and 80 km of aqueducts.

Broadly the Scheme falls into two sections: the northern Snowy-Tumut Development and the southern Snowy-Murray Development. Both developments are connected by tunnels to the Scheme's main regulating storage, Lake Eucumbene on the Eucumbene River.

The table below outlines the details of each of the tunnels, from the year of completion to the length of the tunnel.