Lake of Banyoles (or Estany de Banyoles) is a natural lake located in the comarca "Pla de l'Estany", Province of Girona, in northeastern Catalonia, Spain.

On the western shore it borders with the town of Porqueres.

The lake is approximately 2,100 m by 750 m with an average depth of 15 m that in several points gets down to 46.4 metres.

[2] There are both native and introduced fish species in the lake, like carp, gardí, bavosa de riu, sunfish, tench, black bass and eel.

It is known that other fishes like pike, bullhead catfish (peix gat) and goldfish were introduced in the 19th century, but no specimens of those species have been found in recent surveys in the lake.