Best lakes around Colmenar Viejo are found in the broader Community of Madrid, offering various natural water bodies for recreation. While Colmenar Viejo itself is known for its historical water management infrastructure, the region provides access to significant reservoirs and natural river pools. These locations are popular for their natural beauty and aquatic activities, situated within a landscape that includes parts of the Sierra de Guadarrama. The area offers diverse opportunities for outdoor enthusiasts seeking water-based experiences.
Last updated: July 4, 2026
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Popular around Colmenar Viejo
The Hervidero Waterfall is a double waterfall on the Guadalix River, nestled in a rocky canyon and surrounded by riverside vegetation. It can be reached via a flat and easy 7 km (round trip) route starting from San Agustín del Guadalix, ideal for family hikes.
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Reservoir located in the beautiful town of Manzanares el Real.
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It is a good area for a quiet route without rushing... except for some sections with a lot of water where you have to walk.
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Today it was overflowing with water. Very good place to spend the day.
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The Gato lagoon is an artificial wetland created to adapt a quarry located in the southeast of Moralzarzal, on the border with the municipality of Collado Villaba. In addition, the Gato lagoon is located on the border of the Cuenca Alta del Manzanares Regional Park and the Biosphere Reserve of the same name.
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A reservoir surrounded by good dirt tracks and bicycle paths, with privileged views of La Pedriza and Cuerda Larga
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The “Laguna del Gato” is a shallow, seasonal lagoon restored by the Community of Madrid within the Habitat Recovery Program for amphibians in the Community's Livestock Route Network. It is an artificial wetland resulting from the adaptation of an aggregate quarry intended for construction. This quarry was located southeast of the urban center of Moralzarzal right on the border with the municipality of Collado Villaba.
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While Colmenar Viejo itself is known for historical water management infrastructure, the broader Community of Madrid offers a variety of natural water bodies. You can explore significant reservoirs like Pedrezuela Reservoir and Santillana Reservoir, natural river pools such as Las Presillas in Rascafría, and even seasonal lagoons like Laguna del Gato.
Yes, several spots are ideal for families. Hervidero Waterfall features a small lake perfect for disconnecting and enjoying the shade. Pedrezuela Reservoir and Santillana Reservoir are also considered family-friendly. Additionally, Las Presillas in Rascafría offers natural pools and wide green meadows, making it great for family picnics and swimming during summer.
The region boasts diverse natural beauty. At Santillana Reservoir, you'll find spectacular views of Manzanares and its castle, making it a prime spot for bird photography and observing migratory birds. Las Presillas offers views of Peñalara Peak and cascades. The Pantano de San Juan, often called 'Madrid's Beach,' is set within the stunning Sierra de Guadarrama National Park, providing a dramatic backdrop of mountains and crystal-clear waters.
Yes, natural swimming is popular in certain areas. Las Presillas in Rascafría is well-known for its three natural pools in the Lozoya River, ideal for swimming. The Pantano de San Juan also offers extensive waters suitable for various water-based activities, including swimming, with specific recreational areas and even nudist zones.
The lakes and reservoirs around Colmenar Viejo offer a range of activities. You can enjoy hiking, cycling, and mountain biking. For example, there are numerous mountain hikes around Colmenar Viejo, including routes with views of the reservoirs, which you can explore in the Mountain Hikes around Colmenar Viejo guide. Gravel biking routes, such as the Santillana Reservoir Bridge loop, are also available, as detailed in the Gravel biking around Colmenar Viejo guide.
Yes, both reservoirs are popular for hiking. Around Santillana Reservoir, you can find various trails, including circular walks that offer views of the mountains and Manzanares el Real. For specific routes and their difficulties, you can check the Mountain Hikes around Colmenar Viejo guide, which includes trails like 'View of the Reservoir loop from Manzanares el Real'.
Absolutely. Santillana Reservoir is particularly noted as a resting point for migratory birds, making it an excellent spot for ornithology enthusiasts. Visitors often enjoy photographing birds there and observing the diverse species that frequent its waters throughout the year.
The best time to visit depends on your preferred activities. For swimming and family picnics, the summer months are ideal, especially at spots like Las Presillas. For hiking and enjoying the natural beauty, spring and autumn offer pleasant temperatures and vibrant landscapes. Birdwatching is excellent at Santillana Reservoir year-round, with migratory birds being particularly visible at certain times.
Yes, the “Laguna del Gato” is an artificial wetland that was created by adapting an aggregate quarry. It has been restored by the Community of Madrid as part of a Habitat Recovery Program for amphibians. It's located near Moralzarzal, on the border with Collado Villaba, and is part of the Cuenca Alta del Manzanares Regional Park.
Parking availability varies by location. For Las Presillas in Rascafría, while entry is free, parking costs €5 per day if you wish to park close by. For other areas like Lagunas de Cobeña, it's often possible to park nearby, such as in the Cobeña sports area, making it convenient for family excursions.
Yes, some locations offer amenities. The Pantano de San Juan has recreational areas like La Lancha del Yelmo, which includes picnic areas and a kiosk. Lagunas de Cobeña is also noted for having tables and shade, making it an ideal spot for lunch or a break during an excursion.
Pedrezuela Reservoir, completed in 1967, was built by the Canal de Isabel II to supply water to Madrid, capturing waters from the Guadalix River. Its double-curved thick-vaulted dam design was innovative for its time, being the first of its kind used on a Canal de Isabel II dam, and significantly reduced the amount of concrete needed for its construction.


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