The Saisser See is situated 593 m above Velden in a hollow of an old crystalline range that accompanies the Wörthersee in the north. Its water is slightly brown because of the surrounding dark moor soil.
Only a few small rills out of the moor areas in the west, north- west and east and from the woody slope in the north feed the lake. A small brook in the south- west is the only runoff. The lake is weakly flown through. The catchment area is situated in the old crystalline range and so has only little electrolyte concentration and stimulates the building up of sour moor vegetation in the silting up area.
Natural left banks. The shores are mostly left natural. In the north and south fir- and spruce forests come down as far as the lake. The western shore is touched by boggy meadows. Here you can find the only public bathing place. The silting up area in the east changes into sour moor meadows. The Saisser See stands out for remarkable under water vegetation. In a depth between 1, 5 and 4, 5 m there is a dense carpet of chandelier algae. A bit higher you can find a larger population of TAUSENDBLATT and KRAUSEN spawn herbs.
Use for angling. White bream and perch form the main part of the population. Carp and tench are also interesting for angling, but most of all catfish and pike are. Authorized for fishing is the family Wrann from Velden.