Lakes around Rio Maior present diverse natural attractions, featuring significant wetlands and important freshwater sources. While Rio Maior itself does not have large natural lakes, the surrounding region offers notable aquatic destinations. These areas provide opportunities to explore unique ecosystems and natural landscapes, including parts of the Serra dos Candeeiros Natural Park. The region's water bodies are integral to its natural heritage and offer varied experiences for visitors.
Last updated: July 9, 2026
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This place is really very nice to take a break and why not have a picnic! The setting of this small lake is relaxing, I recommend it!
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Artificial lake, with a very pleasant surrounding area. In summer, especially at weekends, the area is very popular with families and groups for picnics. Note: The description below seems to refer to another place, which I think is the Ermida Bridge
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Surrounded by beautiful and abundant trees, it is a bridge with a Romanesque arch. There are several theories regarding its construction; some argue that it was built during the reign of D. João II, in order to facilitate the King's movement when he went to meet Queen D. Leonor for a swim in Caldas, while others claim that it was built in the 19th century due to a technical issue, namely its width. Interestingly, this bridge supports two enormous pine trees at the top of the road.
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Artificial lake, with a very pleasant surrounding area. In summer, especially at weekends, the area is very popular with families and groups for picnics.
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Opened in 2005, this dam never fully served the purposes for which it was created. After recent works (2022/2023), it is now expected that it will be able to serve farmers in the region with water for irrigation and even be used for leisure purposes. The surrounding region has interesting paths for mountain biking or gravel cycling.
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“Paul Natura”, Manique do Intendente https://www.youtube.com/watch?v=9nKhlLvOrJw
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Paúl de Manique do Intendente is an area of around 97,000 square meters that constitutes a very rich natural heritage of great importance in terms of biodiversity, namely in terms of avifauna, already recognized at national level. It is an ecosystem composed of more than 180 species, where you can find 5 "simply unique" species such as the striped tortoise, the common caiman, the otter, the black stork and the reed. The municipality has been focusing on promoting this space, having recently advanced with the installation of an infrastructure for the observation of the fauna and flora of Pául, which aims to promote knowledge, protection and preservation of this unique and so rich ecosystem for the Municipality of Azambuja and for the entire region.
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very pleasant landscape, it is recommended
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The most popular natural monument is Paúl de Manique do Intendente, recognized for its rich biodiversity. Another appreciated spot is Arrimal small lake, known for its relaxing, family-friendly setting. For man-made water bodies, Alvorninha Dam is notable, with potential for leisure activities.
Yes, Arrimal small lake is specifically highlighted as a family-friendly natural monument, perfect for breaks or picnics. Additionally, Lagoa de Alcoentre is an artificial lake with a very pleasant surrounding area, popular with families and groups for picnics, especially on weekends during summer.
The region offers diverse natural features. At Paúl de Manique do Intendente, you'll find a rich wetland ecosystem with over 180 species, including unique fauna like the striped-necked terrapin and black stork. The broader region also includes the significant freshwater source of Olho D'Água das Alcobertas within the Serras de Aire e Candeeiros Natural Park, and the spectacular Albufeira do Castelo do Bode further afield, known for its green hills and forests.
Beyond enjoying the lakes themselves, the surrounding area offers various outdoor activities. You can find numerous cycling routes, including challenging road cycling and mountain biking trails. For example, there are MTB Trails around Rio Maior and Cycling around Rio Maior guides available. The Albufeira do Castelo do Bode, though further, is popular for water activities like swimming, sailing, canoeing, and fishing, with wakeboarding being a sought-after activity at Lago Azul.
Yes, the region offers interesting paths. The area around Alvorninha Dam has paths suitable for mountain biking or gravel cycling, which can also be explored on foot. While specific hiking trails are not detailed for every lake, the natural areas like Paúl de Manique do Intendente are equipped with observation infrastructure, suggesting accessible paths for exploring the flora and fauna. The Serras de Aire e Candeeiros Natural Park also offers trails.
The best time to visit depends on your preferred activities. For enjoying picnics and warmer weather at places like Lagoa de Alcoentre, summer weekends are very popular. For observing wildlife at Paúl de Manique do Intendente, spring and autumn might offer more comfortable temperatures and active wildlife. The Lago Azul at Castelo do Bode attracts visitors year-round due to its water sports and scenery.
While specific public transport routes to individual lakes are not detailed, the region is generally accessible by car. For Paúl de Manique do Intendente, local authorities have invested in promoting the space, which often includes considerations for visitor access. It's advisable to check local transport options or plan for car travel, as parking is generally available at popular natural sites.
Regulations regarding dogs can vary by specific location, especially in protected natural areas like Paúl de Manique do Intendente or the Serras de Aire e Candeeiros Natural Park. It's generally recommended to keep dogs on a leash to protect local wildlife and ensure a pleasant experience for all visitors. Always look for specific signage or local guidelines at each site.
While the main highlights like Paúl de Manique do Intendente and Arrimal small lake are well-known, the region's diverse water bodies mean you can often find quieter spots. The Alvorninha Dam, for instance, is a man-made lake that has recently seen works to enable leisure use, potentially offering a more tranquil experience away from the most popular natural monuments.
Rio Maior and its surrounding villages offer various accommodation options, including rural tourism and local guesthouses. While specific cafes or restaurants directly at every lake are not guaranteed, you will find dining options in nearby towns and villages. The Albufeira do Castelo do Bode area, further afield, is known for its accessible accommodation options due to its popularity for water sports.
Paúl de Manique do Intendente is a nationally recognized natural heritage site, spanning approximately 97,000 square meters. It's crucial for its biodiversity, supporting over 180 species, including five unique ones like the striped-necked terrapin, purple swamphen, otter, black stork, and bulrush. The municipality has installed observation infrastructure to promote knowledge and preservation of this rich ecosystem.
Yes, the region includes several man-made water bodies. The Alvorninha Dam, opened in 2005, is one such example, intended for irrigation and now potentially for leisure. Another is Lagoa de Alcoentre, an artificial lake popular for picnics. Further away, the Albufeira do Castelo do Bode is a large and spectacular reservoir.


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