The lake was created in the 1920's by the Hydro-Electric Commission of Tasmania damming the Upper Lake Ricer, Blue Lake and Sand Lake as well as the Morass Marsh. The principal purpose3 of the lake is to support the generation of hydro-electricity.
Water is pumped from Arthurs Lake to the Great Lake which then feeds into the Poatina Power Station which is not that far up above where the first photo is of my last post.
The water comes down via a huge pipe.
A great fishing place at Arthurs Lake many people own houses or shacks and spend many a weekend up there fishing.