The 12.8 km² Lake Wolfgangsee, also called Lake Abersee, is divided into 2 lake basins.  This is because of the narrowing effect the Zinkenbach stream and the Dittlbach stream (near St. Wolfgang), have had over the centuries.  Here the lake is only 20 metres deep.  At 114 metres, the lake is at its deepest in the 7.5 km² St. Gilgen basin.  The smaller 5.4 km² Strobl basin is 67 metres deep.

Species of fish found in the lake:

Lake char, reinanke (whitefish), chub, lake trout, pike, pike-perch, perch, eel, aalrute (a type of eel), bream, aitel (a type of carp) and other types of white fish.  The Perlfisch (Rutilus Meidingeri - a species of ray-finned fish) is strictly protected the whole year round.