Lakes around Elm, Switzerland, are situated in the Glarus Alps, a region known for its mountain landscapes. This area features a variety of lakes, from accessible spots to high-altitude reservoirs. The geological history of the region, including ancient landslides, has shaped many of these lake formations. Visitors can find both natural lakes and those integrated into hydropower systems.
Last updated: April 25, 2026
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one of the most beautiful turquoise lakes in Switzerland
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The Muttsee (formerly Mutten See, Muttensee) is a reservoir on the Muttenalp in the southernmost part of the municipality of Glarus South in the canton of Glarus in Switzerland.
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In 1957, the newly founded Kraftwerke Linth-Limmern AG (KLL) began to realize the power plants that had been planned since the beginning of the 1940s by the Nordostschweizerische Kraftwerke (NOK), into which the Muttensee was to be integrated.
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Until 1917, the official name was "Mutten See", then the spelling "Muttensee" appeared. From 1963, the spelling "Muttsee" appeared. The Hühnerbühl is now known in dialect as Hüenderbüel.[3] The kidney-shaped mountain lake was about 1000 meters long and 400 to 500 meters wide. On the Muttenalp plateau known as Hühnerbühl, it covered an area of about 42 hectares. The height of the lake surface was given as 2442 m until 1899, and 2448 m from 1900 to 1962. In the southeast, the lake was drained by a stream, which after a few hundred meters, at about 2400 m, disappeared into the Muttsee cave in the karst subsoil of the Muttenalp.[6] A little to the south, from about 2450 m, the Muttenbach collected the snow water from the Latten via various small tributaries.[5] It led this into the Limmernbach via the Mörthal and the Ochsenblanken.
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The lake is registered in the cantonal landscape register as a landscape of regional importance.[4] In the karst area of the Muttenalp there are - in addition to the Muttsee cave and the Muttsee hut - various other small lakes, most of them distributed southwest of the Muttsee over the Hüenderbüel. The largest neighbor, the Ober See, lies north of the Muttsee at 2474 m. It is the only lake on the Muttenalp that is connected to the Muttsee via its outflow.
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The lake is located at the crossing from Linthal-Tierfehd over the Kistenpass to Brigels. It lies in the 2.95 square kilometer basin of the Muttenalp above the Hüenderbüel. The alp is surrounded by high mountains such as Nüschenstock (2892 m) in the west, Rüchi (2849 m) in the northwest, Hinter Sulzhorn (2737 m) in the northeast, Ruchi (3105 m) in the east and Muttenstock (3088 m) in the southeast. The arena opens to the southwest. It drops steeply over the Muttenwand into the Limmerental and over the Muttenchopf (2482 m) to the Limmerensee.
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As part of significant expansion measures for the power plants between 2009 and 2017, the dam built in 1963 was replaced by a concrete dam wall. This has a length of 1054 meters, making it the longest dam wall in Switzerland. The water level reaches a height of 2474 m when fully filled. This makes the Muttsee the highest reservoir in Switzerland, with a capacity of more than 10 million m³. The highest reservoir under the supervision of the federal authorities is the Viderjoch reservoir in the Silvretta Arena, which lies at 2664 m.[1][2] Since 2021, the largest alpine photovoltaic system in Switzerland has been under construction on the dam wall.
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Lake Cauma is widely regarded as one of Switzerland's most beautiful mountain lakes, famous for its striking turquoise, blue, and green waters. Another must-see is Oberblegisee, a quiet mountain lake offering a stunning contrast between its shallow waters and the steep southern wall of the Glärnisch.
Yes, Lake Prau Tuleritg is a unique temporary lake. It typically dries up by the end of summer due to underground seepage and then refills each spring with meltwater from the mountains. It lacks tourist infrastructure but is beautifully embedded in the landscape.
Lake Cauma is considered family-friendly, offering amenities like a beach and restaurant. While the approach can be steep, it's accessible via a train, making it easier for families with children. Lake Prau Tuleritg is also listed as family-friendly, though it has no infrastructure.
Lake Cauma is accessible, even with its steep approaches, via a train, which can be considered a form of public transport or assisted access, making it convenient for visitors without a car.
The lakes are nestled in the Glarus Alps, offering stunning mountain landscapes. You'll find dense forests, natural monuments, and viewpoints. The region's geological history, including ancient landslides, has shaped many of these lake formations. For instance, Lake Cauma was formed by the largest landslide in the Alps.
Yes, the Muttsee Reservoir is a prime example. It is the highest reservoir in Switzerland when fully filled and has been integrated into hydropower energy generation since 1968. Since 2021, it also features Switzerland's largest alpine photovoltaic system on its dam wall.
Visitors frequently praise the stunning natural beauty, especially the vibrant colors of the water at Lake Cauma. The quiet and relaxing atmosphere of lakes like Oberblegisee is also highly appreciated. The unique geological stories behind lakes like Lake Prau Tuleritg also captivate many.
The region offers a variety of outdoor activities. You can explore numerous cycling routes, including gravel biking, road cycling, and touring bicycle routes. For example, there are routes like the 'Three Lakes Tour from Flims' or the 'View of Lake Klöntal – Klöntalersee loop from Elm'. You can find more details on these activities in the dedicated guides for Gravel biking around Elm, Road Cycling Routes around Elm, and Cycling around Elm.
Yes, for Lake Cauma, the Panoramic view of Lake Cauma is highly recommended. It's considered the best spot to see the lake from above, where its turquoise, blue, and green colors truly shine. Many hiking trails also offer elevated perspectives of the various lakes.
While the lakes are beautiful year-round, visiting Lake Cauma early in the morning and during the week is advised to avoid crowds, especially in summer. In winter, it transforms into a peaceful haven. For Lake Prau Tuleritg, spring and early summer are ideal to see it full of water before it dries up later in the season.
Lake Cauma offers facilities including a restaurant and a beach, making it a comfortable spot for visitors. Other lakes, like Lake Prau Tuleritg, are more natural and lack tourist infrastructure.


Still not found your perfect lake around Elm? Check out the guides of these regions to see even more beautiful places.