A large dry lake occupies the center of the valley.
In the Pleistocene era, the lake occupied an even greater area.
A lake occupies the far eastern end of the caldera.
Sediment analysis indicate that until 18,000 years ago a lake occupied the central part of the crater, which has now become a swamp.
A small lake has intermittently occupied the northern caldera floor, most recently in 1988.
Two small lakes occupied the caldera floor on the west and north sides of the lava dome.
The lake has a volume of 3 405 000 m3 and occupies area of 11,2 hectares.
According to legend, the lake occupies the site of early cultivations.
Rivers and lakes occupy 2.89% of the city area.
A small lake occupies part of the caldera floor.