Lake Sandvatn is rather shallow, 4 m deep, situated 381 m
above sea level and has an area of 3 km².
Its catchment area is very
small and its discharge is a small brook. The catch consists almost solely of lake char,
½-3 pounders. It is located just west of lake Myvatn and easily accessible by road.
The distance from the capital is about 488 km by the Whale Bay tunnel.