Lakes around A Dos Francos are situated within the municipality of Caldas da Rainha, Portugal, offering a variety of aquatic features. The region features urban park lakes, river dams forming reservoirs, and coastal lagoons. These water bodies provide settings for outdoor activities and natural observation.
Last updated: July 1, 2026
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"Workshop" where you can make small repairs to your stomach
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The Arnóia River rises in the Serra de Todo o Mundo and flows for 30 km before flowing into the Óbidos Lagoon. A dam was built about one and a half kilometres from Óbidos, in the Horta Valley, whose reservoir was used to irrigate the area's crops.
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The Arnóia River rises in the Serra de Todo o Mundo and flows for 30 km before flowing into the Óbidos Lagoon. A dam was built about one and a half kilometres from Óbidos, in the Horta Valley, whose reservoir was used to irrigate the area's crops.
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This area, which is home to vast meadows, owes its name to the fact that in the past (80 or 90 years ago) it was a place where wild cattle were allowed to graze freely. Next to a small lake created to retain rainwater (surface water is rare in the Serra de Montejunto, as it is a mountain made up mostly of limestone), you can still see the ruins of an old stable where the animals spent the night to protect themselves from the cold. Today, this area, especially in the autumn and winter months, is used as a grazing area for goats and sheep. In the spring and summer, these fertile meadows are used by the populations of the nearby villages (Cercal and Rocha Forte) to grow crops such as potatoes and other dryland crops.
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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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Built in 1997, the Sobrena (Cadaval) dam never filled. It was expected to irrigate 100 hectares of agricultural land, benefiting 120 farmers, mainly Rocha pear producers. The dam is an exposed ruin, with the support buildings invaded by brambles and a wall from which a pond can be seen in the place where a reservoir should have been. All around you can see eucalyptus trees. And these trees are precisely one of the reasons for the failure of this investment of more than two million euros.
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Dammed lake for the water supply of Obidos. Nicely situated in the valley
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Near A Dos Francos, within the municipality of Caldas da Rainha, you can explore a variety of aquatic features. These include the extensive coastal Óbidos Lagoon, serene urban park lakes like the one in Parque Dom Carlos I, and river dams such as the Alvorninha Dam, which form reservoirs.
Yes, several lakes are suitable for families. Parque Dom Carlos I, Caldas da Rainha, is a great option with its tranquil lake where you can enjoy rowboats, and the park itself has swans, ducks, and scenic walkways. The Arnóia River Dam area is also considered family-friendly.
The Óbidos Lagoon is excellent for a range of activities. You can enjoy kayaking, paddleboarding, and birdwatching, as its ecosystem is a haven for various aquatic species and migratory birds. There are also boardwalks for leisurely strolls, making it ideal for nature lovers and outdoor enthusiasts.
Yes, the Alvorninha Dam offers a peaceful natural setting ideal for fishing and canoeing, allowing you to appreciate the local biodiversity. The Óbidos Lagoon also provides opportunities for water sports like kayaking and paddleboarding.
Yes, the region offers various trails. The area around the Alvorninha Dam has interesting paths suitable for mountain biking or gravel cycling. For mountain biking, you can find routes like the 'Óbidos Lagoon – Ponta da Lagoa de Óbidos loop' or 'Views of the Arnóia River – Arnóia River Dam loop'. You can explore more options in the MTB Trails around A Dos Francos guide. For easy hikes, consider routes near Óbidos Castle, detailed in the Easy hikes around A Dos Francos guide.
The lakes near A Dos Francos offer diverse natural observations. The Óbidos Lagoon is known for its rich ecosystem, supporting various aquatic species and migratory birds. The Alvorninha Dam provides a quiet spot to appreciate biodiversity, while Parque Dom Carlos I features swans and ducks in an urban setting.
Yes, Parque Dom Carlos I, Caldas da Rainha, has a charming café within the park, offering a pleasant spot to relax. The park also includes pavilions and scenic walkways.
The lakes can be enjoyed throughout the year. For outdoor activities like kayaking or hiking, spring and autumn offer pleasant temperatures. Summer is ideal for water activities at Óbidos Lagoon, while the urban parks like Parque Dom Carlos I are lovely for a stroll in any season.
Visitors frequently describe Parque Dom Carlos I as a 'very nice haven of peace in the middle of the city.' Its tranquility, the presence of a small café, and its overall peaceful atmosphere are highly appreciated by those looking for a relaxing urban escape.
The Arnóia River Dam, located about one and a half kilometers from Óbidos, was historically significant for its reservoir. This reservoir was built to irrigate the local crops in the area, playing a vital role in the region's agriculture.
Yes, Parque Dom Carlos I in Caldas da Rainha not only offers natural beauty but also cultural elements. It features sculptures by renowned artists and is home to the José Malhoa Museum, blending nature with art and history.
While specific dog-friendly policies vary, many natural areas in Portugal, including walking paths around lakes and lagoons like Óbidos Lagoon, generally welcome dogs on a leash. Urban parks like Parque Dom Carlos I may have specific rules, so it's always best to check local signage.


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