Best lakes around Covilhã are found at the base of the Serra da Estrela mountain range, offering access to several lakes and lagoons. Many of these are integral to the natural park, providing opportunities for nature appreciation and hiking. The aquatic destinations contribute to the serene mountain environment. This region features both natural lakes and artificial reservoirs within its landscape.
Last updated: June 26, 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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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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We walked this walk in October, on a beautiful day, after a few days of heavy rain. Due to the previous wet days, parts of the path were quite a challenge. Certainly to keep your feet dry. The advantage was that the water flowed nicely into the 'drain'. Beautiful sight and impressive. Due to the path of pebbles, boulders, unevenness, etc., it is advisable to wear good walking shoes. Take enough food and drink with you, as is always the advice. In sunny weather, protection from the sun is absolutely necessary. There is no protection from the sun during the walk. Walk calmly, enjoy the surroundings and let everything sink in.
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The region boasts several unique natural features. One notable example is the Covão dos Conchos Trail, famous for its distinctive bell-mouth spillway, an engineering marvel that has become integrated with the natural landscape. Long Lake, the largest reservoir in Serra da Estrela, showcases numerous visible glacial scars along its banks, highlighting its glacial origin. Additionally, the Hidden cascade at Poço do Inferno offers a beautiful waterfall with a natural pool.
Yes, there are many hiking opportunities. The 9 km round-trip nature trail to Covão dos Conchos is popular for its magnificent landscapes. For more options, you can explore various routes like the 'Circular do Planalto Superior' or the 'Covão do Curral Dam – Covão do Ferro Lake loop'. You can find more details on these and other trails in the Hiking around Covilhã guide.
Beyond hiking, the lakes offer various activities. Vale do Rossim Reservoir is excellent for strolls, summer swims, and pedal boating. The natural pools and rivers in the general Covilhã area also allow for swimming. The region is also popular for mountain biking and running, with numerous routes available. Check out the MTB Trails around Covilhã and Running Trails around Covilhã guides for more.
Many lakes and their surroundings are suitable for families. The Covão dos Conchos Trail is generally considered easy, though good footwear is recommended. Vale do Rossim Reservoir is a great spot for families to enjoy nature and even swim in summer. Within Covilhã city, Jardim do Lago offers an urban recreational area with green spaces and a popular beach pool during warmer months.
The lakes are beautiful year-round, but the best time depends on your preferred activities. Summer is ideal for swimming and enjoying the beach pool at Jardim do Lago or the waters of Vale do Rossim Reservoir. Spring and autumn offer pleasant temperatures for hiking and exploring the natural beauty, with less crowded trails. Winter can be stunning with snow, especially in the higher altitudes of Serra da Estrela, but some trails might be more challenging.
Near Vale do Rossim Reservoir, you'll find the Vale do Rossim River Beach Restaurant, which is conveniently located right on the lake and offers food and drinks. There are also accommodation options like the Vale do Rossim Eco Resort nearby. For other lakes, especially those deeper in the Serra da Estrela Natural Park, it's advisable to bring your own provisions, as facilities can be sparse.
While popular spots like Long Lake and Covão dos Conchos are well-known, you might enjoy exploring Peixão Lagoon, described as a 'river jewel' within the glacial granite landscape of Serra da Estrela. Covão do Ferro (or Padre Alfredo Dam) also offers a glimpse into the region's industrial heritage amidst a beautiful natural setting formed by glacial activity.
Yes, swimming is permitted in several areas. Vale do Rossim Reservoir is a popular spot for summer swims. The general area of Covilhã also has rivers and lakes where swimming is allowed, including natural pools such as the one in Paul, Covilhã. The natural pool at the Hidden cascade at Poço do Inferno also invites a refreshing dip.
Good walking shoes are highly recommended, especially for trails like Covão dos Conchos Trail, which can have many loose stones and uneven terrain. Layers are advisable due to changing mountain weather. In sunny weather, sun protection (hat, sunscreen) is essential as many trails offer little shade. If visiting in cooler months, be prepared for crisp mountain air and potentially wet conditions.
Yes, the Jardim do Lago (Garden of the Lake) is located within the city of Covilhã. It features a lake and offers views of the Cova da Beira and the Serra da Estrela mountains. It also includes a 'piscina Praia da Covilhã' (Covilhã Beach pool) which is very popular during the summer, providing an accessible recreational area within the city.
Some lakes have historical ties to the region's development. Long Lake, for instance, is the largest water reservoir in Serra da Estrela, primarily intended for hydroelectric generation, with construction dating back to 1911. Covão do Ferro dam, inaugurated in 1956, was originally built to supply electricity to the wool industry in Unhais da Serra, showcasing the region's industrial heritage.


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