Hydrography of Rivers and Lakes
 
 
Lakes are of glacial origin, have cold transparent water and form part of the typical mountain landscape with rich ornitofauna.
In the area, rivers and creeks which increase their volume with rain and snow are common, as well as mallines (easily inundated Patagonian wetlands) saturated by thawing.
 
 
Patagonia Climate
                             
In general, Patagonian climate is moderate. Its seasons are well defined; however, we can say that fall and spring are short while winters are long. There is great thermal amplitude between summer and winter, as well as a substantial temperature difference between day and night.
Due to the influence of the heterogeneous sea air from the Pacific, Patagonian climate presents heavy winter rains between May and August. And the fact that it does not have a thermal summer allows for abundant rainfall and snowfall in the humid Andes.
The average annual temperature is 8.3ºC (minimum temperatures can reach –16.7ºC and maximum temperatures can reach 35.5ºC).
 
 
Patagonian Flora 
 
Lakes lie in the subantartic phytogeographic division within the Austral Region; and within the Subantartic Province, in the Valdiviano district characterized most importantly by precipitation.
The dominant arboreal species is the Coihue, which can grow up to 900 meters. At such a height the lengal begins, where Lengas are predominant. Apart from these, some Ñires grow in areas prone to flooding and Cypresses where there are rocky outcrops and radales.
The underwood is very dense and presents mainly Caña Colihue (Colihue reed) and shrubs such as the Michay, Espino Negro (blackthorn) and Violetas (violets). In the creeks and at the edge of the underwood, Aljabas, Notros, Ovidia Pillopillo and Pil Voqui are found.