Best lakes around Gouveia are found within Portugal's Serra da Estrela Natural Park, a UNESCO-recognized Geopark. This region features glacial lakes, some of which have been expanded with dams for hydroelectric power generation. The area provides access to high-altitude aquatic environments and opportunities for outdoor activities. Gouveia serves as a base for exploring these natural and engineered lake landscapes.
Last updated: May 13, 2026
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Covão dos Conchos is an artificial lagoon located in the Serra da Estrela Natural Park, Portugal, near the mountain village of Sabugueiro. Covão dos Conchos became famous for its bell-mouth spillway[1]. The spillway was built in 1955 to allow water to be transferred from the Ribeira das Naves River to Lagoa Comprida. It is part of the Serra da Estrela Hydroelectric System. This science fiction-style spillway became famous when photographs of the hole went viral on social media in 2016. Over the past 60 years, the growth of vegetation at the funnel's mouth has created extraordinary biodiversity and increased its ethereal allure. It is 4.6 meters high and 48 meters in circumference. The tunnel that collects the water is 1,519 meters long.
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Located within the Planalto Superior biogenetic reserve, the Rossim Valley is a unique location of great scientific, environmental, and scenic value that deserves to be protected and enhanced. Although it is an artificial lake, over time, conditions have been created that have transformed this area into an excellent leisure and recreation area that attracts countless tourists. The Vale do Rossim recreation center is located at an average altitude of 1,437 meters. Before the dam was built, it was one of the best high-altitude pastures in the municipality of Gouveia. The area has almost always been frequented by transhumance herds, flocks that gathered here from São João to the Sr. do Calvário festivities in August.
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Thanks for sharing.🙏
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At over 1,400 meters above sea level, the Rossim Valley Reservoir is a haven of granite, pine trees, and crystal-clear waters in the heart of the Serra da Estrela Mountains. It's the perfect setting for strolls, summer swims, and admiring nature in all its splendor, one of Portugal's highest jewels.
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Hiking in the Serra da Estrela is always pleasant, with stunning scenery and spectacular trails. 👍
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This restaurant and bar is located right on the lake (there's nothing else in the area), and it's nice to sip a nice beer 🍺 and grab a bite to eat after a sunny day or a nice hike. Also... For those who want to stay longer, there's the Vale do Rossim Eco Resort: camping, equipped yurts, or wooden cabins, with the option of half-board at a reasonable price at this lakeside restaurant. Breakfast is good, dinner is very simple, but all drinks are included, including a bottle of wine 🍷 🤪.
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A beautiful nature trail, about 9 km round trip to Covão dos Conchos. Unfortunately, on August 15th, the water couldn't reach the hole and thus reveal the waterfalls. It's a reservoir, part of the Serra da Estrela hydroelectric system. A funnel-shaped drainage structure that allows water to flow from this body of water to Lagoa Comprida. The spillway was built in 1955 to divert water from Ribeira das Naves to Lagoa Comprida. Over the past 60 years, moss and foliage have grown over the mouth of the funnel, creating a captivating spectacle. It is 4.6 meters high and 4.8 meters in circumference. The tunnel that collects the water is 1,519 meters long. It's a stunning place to visit, not only for the combination of human intervention and nature, but also for the surrounding landscape.
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Located at an altitude of approximately 1,600 meters, Lagoa Comprida is the largest water reservoir in the Serra da Estrela, intended for hydroelectric generation. This natural lake lies in a wide depression of glacial origin, approximately one kilometer long, which fed the Covão Grande glacier. Numerous glacial scars are visible along its banks, making this lake one of the most interesting geomorphological sites in the Serra da Estrela. Construction on this lake began in 1911, and by 1914, it was already six meters high. Later, in 1965, it underwent heightening work that increased its height to 28 meters, currently boasting a storage capacity of approximately 14 cubic hectometers, flooding an area of approximately 80 hectares. Small streams of water flow into this lagoon, as well as water retained in the Covões dos Conchos and Covões do Meio and carried to this lagoon through underground tunnels.
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The lakes around Gouveia, nestled in the Serra da Estrela Natural Park, are known for their glacial origins. You can observe visible glacial scars along the banks of Long Lake. A particularly unique feature is the bell-shaped spillway at Covão dos Conchos Trail, an artificial lagoon often described as a 'portal to another dimension' due to its distinctive appearance.
Yes, the region offers trails for various levels. The path to Covão dos Conchos Trail from Long Lake is generally considered easy, though some areas have scree requiring good footwear. Long Lake itself has an intermediate rating for its surrounding routes. For more challenging terrain, the area around the Hidden cascade at Poço do Inferno is rated as challenging, requiring good footwear and sure-footedness.
The lakes are beautiful year-round, but the best time depends on your preferred activities. For summer swims and enjoying the fresh mountain air, the warmer months are ideal, especially at places like Vale do Rossim Reservoir. Visitors have enjoyed the trails in October after rain, when the Covão dos Conchos spillway flows nicely, and in August, when the heat is tempered by the altitude. Always be prepared for varying weather conditions at high altitudes.
Beyond exploring the lakes themselves, the region offers a wide range of outdoor activities. You can find numerous running trails, including difficult routes like 'Estrela Taurus' and 'Estrela Orion Belt'. Cycling enthusiasts can explore routes such as the 'Folgosinho – Folgosinho loop'. For mountain biking, there are challenging trails like 'Serra da Estrela: Manteigas and Torre Loop' and the 'Great Zêzere Route'. You can find more details on these activities in the Running Trails around Gouveia, Cycling around Gouveia, and MTB Trails around Gouveia guides.
Yes, several lakes and their surrounding areas are considered family-friendly. The Covão dos Conchos Trail and Vale do Rossim Reservoir are both categorized as family-friendly. Vale do Rossim Reservoir is particularly noted for strolls, summer swims, and admiring nature, making it a great spot for families.
Yes, swimming is possible in some areas. Vale do Rossim Reservoir is known for its crisp waters and is a popular spot for summer swims. Additionally, the Hidden cascade at Poço do Inferno features a natural pool that invites visitors to swim.
Visitors frequently describe the 4 km (one way) trail from Long Lake to Covão dos Conchos Trail as offering magnificent landscapes with blue skies, lagoons, and diverse greenery. While generally easy, many areas have loose stones and scree, so good walking shoes are highly recommended. Protection from the sun is also necessary as there's little shade. The unique bell-shaped spillway is often highlighted as an impressive and beautiful sight.
Yes, near Vale do Rossim Reservoir, you can find the Vale do Rossim River Beach Restaurant. It's described as a nicely located spot to fortify yourself after a hike or enjoy a drink by the lake. This restaurant is conveniently situated right on the lake, offering a place to relax and grab a bite.
The '25 Lagoons Route' is a notable area within the broader Serra da Estrela region, accessible from Gouveia. It features numerous glacial lakes at high altitudes, offering extensive opportunities for hiking and exploring the pristine mountain landscape. While not a specific highlight in this guide, it represents the rich environment of glacial lakes in the area.
Yes, the Hidden cascade at Poço do Inferno is a beautiful waterfall with a natural pool. It's described as somewhat hidden and can be a bit challenging to access, requiring good footwear and sure-footedness, but offers a rewarding experience, often with fewer crowds than the larger cascades below.
The terrain around the lakes, particularly in the Serra da Estrela Natural Park, is characterized by its glacial origin. You can expect paths with visible glacial scars, granite boulders, and sometimes scree or loose stones, especially on trails like the one to Covão dos Conchos Trail. Good walking shoes are essential for navigating these uneven surfaces and enjoying the high-altitude landscapes.


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