Caumasee, Flims

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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.
When the lake is at a low level, with a small volume of water, it warms up sooner than most lakes in the region, so people can be seen starting to swim the lake in April while bigger lakes even in lower areas of Switzerland remain rather cool. Water temperature in summer is at an average 21 Celsius, with a maximum around 24 Celsius.
The lake is located in a huge Forest that was allowed to remain on the agriculturally useless debris area of the biggest prehistoric rockslide in the alps region and can only be reached by a footpath, possibly using a funicular built in 1939, refurbished in 1988 on its original tracks . The walk from the edge of town to the funicular takes about 10 minutes.
As close as 500 yards to the Caumasee is another dell and altering lake, called Lag Tuleritg, which is just about level to the Caumasee; it is just 18 Meters higher. This lake dries out completely in autumn and remains empty until being filled by a small river of just about 800m in length, covering some 100 meters difference in altitude. That river will start flowing around May, depending on temperatures and snow melt rate in the mountains. Its origin is another lake, Lag Prau Pulté, which is fed by underground water only in spring, disappearing in autumn and staying dry all winter. During a cold period in spring, water that entered the basin of this lake may disappear again as snow melt decreases and all water remains in the underground flow. Due to its origin, the water of both lakes is grey all summer until the level starts to go down in autumn. In Lag Prau Pulte one can see another special effect caused by air being forced out of the underground; this is causing the lake not only to remain grey but to frequently produce bubbles and therefore different colours can be seen on the surface.
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Caumasee Reviews
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TripAdvisor Traveler Rating 4.5
374 reviews
Google
4.7
TripAdvisor
  • Beautiful mountain lake. It is easily accessible for people not very fit via a small funicular (free) and for walkers, there are more demanding hiking trails (but still quite simple). The Lake was too cold to bathe but it must be very good in the summer.
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  • Absolutely marvellous lake in the Swiss mountains! Only a few minutes away of Flims, easily reachable by walking. Definitely bring your camera! After visiting the lake of Cauma, we hiked further to th...  more »
Google
  • Nice little lake in Flims. There is a nice footpath down to the lake. Just follow the signage. You can walk around the lake. There is no restaurant at the like which is open in the winter. The funicular is also close is in the winter season.
  • The Lake Cauma is a beautiful place. In summertime it's unfortunately very crowded and for swimming you pay converted approximate 13 Euros entry fee. In my opinion the best time to visit it is between October and May. From the parking lot you can also reach it with an elevator.
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