Storsjön has an area of a 70.6 km2 (27.3 sq mi), a greatest depth of 15 metres (49 ft), and is approximately 62 metres (203 ft) above sea level.

This could possibly be proven by a 17th-century map where Gavleån, that flows through Gävle, is called Odensjöströmmen (lit.

By experimental fishing, these fishes have been caught:[2] Water samples are taken at the following beaches in Storsjön: Storsjön is a part of catchment area (671779-155196) which the Swedish Meteorological and Hydrological Institute calls Utloppet av Storsjön (lit.

The median height is 67 metres (220 ft) above sea level, and the area is 149 km2 (58 sq mi).

The catchment area has a 70.48 km2 (27.21 sq mi) of water surface, giving it a lake percentage of 47.3%.