Caumasee

Caumasee is a lake near Flims, in the Grisons, Switzerland. It is one of the lakes on the Flims Rockslide deposits. The lake is fed from underground sources. Its surface area is 10.3194 ha.

The level of the lake varies by approximately 4 to 5 meters along with the varying underground water flow during the year, hence reaches its minimum by the end of April when snow melting in the mountains increases. A maximum level is reached by mid July but may be topped in August even after previous falling due to summer rain. The very western bay never freezes in winter, probably showing a maximum water flow in this area.