The lake, which belongs to the Municipalities of Šenčur, Kranj, and Medvode, covers an area of 1 square kilometre (0.39 sq mi) and is up to 17 metres (56 ft) deep.[3] As the lake submerged part of the Zarica Gorge of the Sava, it is surrounded by steep banks, with conglomerate cliffs in the northern part. A number of villages lie at the lake: from the south towards the north, they are Moše, Trboje and Žerjavka on the east side, and Mavčiče, Praše, and Jama on the west side.[2]
The lake is renowned by its fauna, which includes numerous fish (particularly carp) and about 140 species of birds.[3] It is a rare and the biggest nesting place of the common merganser in Slovenia. The flora features a number of alpine species, among them the edelweiss.[4] It is a popular place for fishing and boating.[3]