The greatest depth is 145 metres, and it has a surface area of just under 23.5 km.

The Rotoroa Route, following the northeast side of the lake, has been permanently closed to public access.

[1] Several other walking tracks can be accessed near the settlement at the head of the lake, and a water taxi travels the length of the lake to ferry trampers.

[2] The lake has introduced trout, which attract recreational fishermen.

[3] The word rotoroa is Māori for long lake.