Best lakes around Trimmis are found within the wider Graubünden region, known for its diverse alpine landscapes. While Trimmis itself does not host large lakes, the surrounding area offers numerous natural and man-made water bodies. These lakes provide opportunities for hiking, relaxation, and experiencing the natural beauty of the Swiss Alps. Many are easily accessible and serve as focal points for outdoor activities.
Last updated: May 16, 2026
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Siechastuda – Jenins For a long time, Siechastuda has served as a refuge. Until around 1700, lepers lived here in a plague house, separated from the other villagers. Today, plants and animals that depend on wetlands seek refuge here, as these are now scarce in the intensively farmed Rhine Valley of Graubünden. But it's not just water-loving creatures like the beaver that feel at home in this protected habitat of national importance. Well over 200 plant species, butterflies, bats, hedgehogs, martens, snakes, deer, and many other animals appreciate this near-natural island in the agricultural area. Deadwood is an important component of a naturally developed forest. Standing and fallen deadwood in various stages of decomposition and diameter classes provides a vital habitat for a vast number of creatures. Around 6,000 animal, fungal, and lichen species found in Swiss forests depend on deadwood. Many of these are on the Red List because their habitat has shrunk considerably due to a lack of naturally aged forests with decay phases. According to the guidelines of the Canton of Graubünden and the Federal Office for the Environment, 2-3 deadwood islands should be maintained for every 100 hectares of forest area. Text / Source: Zweckverband Falknis, Werkhofstrasse 14, 7304 Maienfeld https://www.zweckverbandfalknis.ch/naturschutz
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Pracavalls Pond, Pfäfers Repair and Improvement of the Surrounding Area of Pracavalls Pond The pond has a capacity of approximately 3,200 m³ and is up to 4.50 m deep. The stability of the dam poses certain risks due to vegetation growth, seepage, etc. A GG 200 diversion line (built in 1910) leads from the pond toward the clinic. This line feeds hydrant No. 17. Upstream of the pond is a concrete basin including a sand trap, which formerly served as a firewater reservoir for the psychiatric clinic. The concrete basin will be dismantled and replaced in the same location with a natural channel as an inlet to the pond. The pond will be partially filled, the waterside slopes flattened, and then resealed. The existing bottom outlet and the GG 200 diversion line will be closed or dismantled. The maximum water depth in the newly designed pond is 1.20 m. This will also increase safety for users of the nearby "Schweizerfamilie Feuerstelle" (Swiss Family Fireplace). Hydrant No. 17, which previously fed water from the pond, will be relocated and connected to the Pfäfers water supply network. Client: Building Construction Office of the Canton of St. Gallen Text / Source: wlw Bauingenieure AG, Zurich / Mels https://www.wlw-ingenieure.ch/projekte-detail/214.html
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Away from the busy road, nice view of the reservoir. As there is some coarse gravel, good tires are required (so not suitable for racing bikes).
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Glattwang Seeli 2265 m The Glattwangseeli is a small mountain lake in the municipality of Jenaz in the canton of Graubünden. It is located at 2260 meters above sea level on the northern flank of the Glattwang mountain, which gives it its name. The easiest way to hike to Glattwangseeli is from the Fideriser Heuberg. From there a mountain hiking trail leads up to the Seelein and then further over the ridge to the Glattwang and the Hinteregg. Text / Source: schweizersee.ch https://www.schweizersee.ch/glattwangseeli/
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Mapraggsee The Mapraggsee is located in the Tamina valley at an altitude of 865 meters above sea level. Located in the St. Gallen municipality of Pfäfers, the Mapragg reservoir is operated by the Sarganserwald power plants, just like the Gigerwaldsee upstream. In addition to the Tamina, which also flows out of the reservoir, the Mapraggsee is fed by the Bschissnenbach, the Läuibach and various other streams. The Mapragg reservoir is located in the middle between the villages of Vättis and Pfäfers. This stretch is also covered by a post bus service. On the east side of the Mapraggsee, a road runs slightly above the shore. Text / Source: schweizersee.ch https://www.schweizersee.ch/mapraggsee/
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The trail along the lake is a better choice than the paved cantonal road
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Large picnic area by the pond with fireplace, shelter, toilet and plenty of seating ... a nice place to take a break.
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The lakes in the wider Graubünden region, accessible from Trimmis, are renowned for their stunning alpine settings and diverse characteristics. You'll find everything from striking turquoise mountain lakes fed by underground springs, like Lake Cauma and Lake Cresta, to significant reservoirs such as Mapraggsee, and small, serene mountain tarns like Glattwangseeli (2265 m). Many are known for their crystal-clear, drinkable water and picturesque surroundings.
Yes, several lakes in the area are great for families. Mapraggsee is a popular family-friendly lake and reservoir, offering beautiful turquoise waters. The Pond in Graubünden Nature Reserve provides a peaceful setting for nature observation. Additionally, the Picnic Area at Weiher Pracaväls features a large picnic area with a fireplace, shelter, and toilet, making it ideal for a family outing.
The lakes around Trimmis offer a variety of outdoor activities. You can enjoy scenic hikes, such as the trail along Along the Mapragg reservoir, or more challenging mountain hikes to spots like Glattwangseeli (2265 m). Many lakes are suitable for swimming, and some, like Chapfensee, are popular for angling. The wider region also provides extensive opportunities for gravel biking, cycling, and mountain biking.
Lake Cauma is often called one of Switzerland's most beautiful mountain lakes, famous for its turquoise waters and forest setting. Lake Cresta offers a similar fairytale-like atmosphere with its clear waters and fir trees. Lai da Palpuogna, located in Parc Ela, has been voted one of Switzerland's most beautiful spots due to its captivating water color and natural surroundings. Lago Bianco, at the Bernina Pass, is striking with its milky-blue glacial waters.
Accessibility varies by lake. Lake Cauma is accessible via a funicular, and a stroller-friendly path leads to it. Lake Cresta is only accessible on foot from the Trin Mulin parking lot. Lai da Palpuogna is reachable via a pleasant walk from the Preda train stop, though parking is limited. The Bernina Express train line runs directly along Lago Bianco. For lakes like Mapraggsee, a post bus service covers the stretch between Vättis and Pfäfers, and a road runs along its east side.
Yes, many of the lakes in the Graubünden region are suitable for swimming. Lake Cauma is particularly popular for its warm, clear waters and facilities like a diving tower and paddling pool. Lake Cresta also offers crystal-clear waters for a refreshing dip. While not explicitly mentioned for swimming, the Mapraggsee with its turquoise water is also a popular spot for recreation.
The best time to visit is generally from late spring to early autumn (May to October) when the weather is mild, and hiking trails are clear of snow. During summer, the lakes are ideal for swimming and water activities. To avoid crowds at popular spots like Lake Cauma, it's recommended to visit early in the morning or during the week.
While popular lakes like Cauma and Cresta can get busy, exploring smaller, higher-altitude lakes might offer a more secluded experience. Glattwangseeli (2265 m) is a small mountain lake accessible via a mountain hiking trail, offering a more tranquil setting. The Pond in Graubünden Nature Reserve also provides a quiet, protected habitat for nature lovers.
You can expect to see diverse natural features, including dense forests, alpine meadows, and dramatic mountain backdrops. Many lakes are nestled amidst thick fir trees, while others are set in high alpine landscapes with views of glaciers and peaks, such as Wildsee with its views of the Pizol Glacier. The Pond in Graubünden Nature Reserve is a protected wetland habitat, home to diverse plant and animal species, including beavers and numerous bird species.
Yes, some lakes offer amenities. Lake Cauma and Lake Cresta both have restaurants available. The Picnic Area at Weiher Pracaväls is equipped with a large picnic area, fireplace, shelter, and toilet facilities. For other lakes, it's advisable to check specific details or bring your own provisions, especially for more remote mountain lakes.
Visitors particularly appreciate the stunning natural beauty, the crystal-clear waters, and the peaceful atmosphere. The scenic trails along reservoirs like Along the Mapragg reservoir are highly rated for their beautiful landscapes. The turquoise blue water of Mapraggsee and the serene setting of the Pond in Graubünden Nature Reserve are also frequently highlighted by the komoot community.
Many lakes offer excellent hiking opportunities. The trail along Along the Mapragg reservoir is a popular choice, featuring both dirt road and singletrack sections. For a more challenging mountain hike, you can trek to Glattwangseeli (2265 m) from Fideriser Heuberg. The Five Lakes Hike, which includes Wildsee, is another renowned alpine trekking experience offering breathtaking views.


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