Best lakes around Sierra De Segura are located within the Sierras de Cazorla, Segura y Las Villas Natural Park, a region known for its extensive hydrographic network. This area in Jaén, Spain, features numerous reservoirs and natural pools crucial for water supply and outdoor recreation. The landscape offers diverse aquatic environments, contributing to the rich biodiversity of the natural park. These water bodies provide opportunities for various activities and serve as significant natural attractions.
Last updated: July 10, 2026
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The traveler's view I perfectly remember that moment. I had already covered many kilometers without a single drop of water in my bottle and, yet, in front of us stretched an immense sheet of crystalline water. It was one of those paradoxes that only those who travel by bicycle understand: being surrounded by water and at the same time feeling the thirst becoming more intense. Even so, contemplating the reservoir compensated for some of the fatigue and reminded us that, even on the most complicated days, there is always a landscape capable of bringing back a smile.
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Did you know...? Although the dam was completed in 2015, it was the subject of debate for years because the infrastructure needed to fully utilize the stored water took time to develop. In the meantime, the reservoir became a new landscape for the region and an attraction for hikers, cyclists, and nature lovers.
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Pay attention to... Unlike other reservoirs located in large open valleys, Siles adapts perfectly to the mountainous terrain of the Sierra de Segura. Its winding shores, surrounded by pine forests, make it look like a natural lake rather than a large engineering work at many points.
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The Siles reservoir collects the waters of the Guadalimar River, one of the main tributaries of the Guadalquivir. Its construction began in 2007 and ended in 2015, with the aim of regulating the river's flow, reducing the risk of floods, and ensuring resources for the supply and irrigation of the region. The dam, 52 meters high and 271 meters long, can store 30.5 cubic hectometers of water and is one of the most modern hydraulic infrastructures in the province of Jaén.
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At the end of the long journey along the beautiful Barosa River, you will reach this beautiful lagoon with crystal-clear waters.
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Spectacular waterfall and pool. If you follow the Borosa trail, you can't miss stopping and swimming in it. In summer, the sun starts shining directly after 11:30, and the water and the bottom of the pool go from opaque black to transparent turquoise. This makes it less scary to go in, but after that time, people start to gather around this spot!
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It is the highest waterfall on the Borosa River. From above (between the first and second tunnels) it is not visible, but from below it is spectacular.
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The Sierra de Segura region is rich in diverse aquatic environments, including large reservoirs, natural pools, and lagoons. You'll find significant man-made reservoirs like the Embalse del Tranco, as well as natural swimming spots such as the Charco del Aceite Recreational Area and the natural water reservoir at Peña del Olivar.
Several lakes and areas are family-friendly. The Cerrada del Utrero Reservoir offers a placid environment for relaxation. The Lagoon of Black Waters is also considered family-friendly, as is the Fish Farm in Parque Natural de la Sierra de Cazorla, Segura y las Villas, which has facilities and is set in a forest. The Tranco de Beas Reservoir and the main Tranco Reservoir are also great options for families.
Yes, there are excellent spots for swimming. The Calavera Waterfall features a spectacular pool ideal for swimming, especially refreshing after a hike. The Charco del Aceite Recreational Area, located on the Guadalquivir river, has a natural pool perfect for swimming. Additionally, the Peña del Olivar Recreational Area near Siles offers a natural water reservoir where swimming is permitted.
You can find stunning views at several locations. The Isla Cabeza de la Viña Viewpoint, located in the Tranco reservoir, offers incredible vistas. The village of Hornos de Segura also provides panoramic views of the vast Embalse del Tranco. The Cerrada del Utrero Reservoir and the Lagoon of Black Waters are also noted for their scenic beauty.
Absolutely. The region offers numerous hiking opportunities. For easy walks, you can explore routes like 'Hornos Castle and Village – Views of the Tranco reservoir loop from Hornos' or 'Borosa River Waterfall loop from Lentisco de la Torre del Vinagre'. You can find more options and details on the Easy hikes around Sierra De Segura guide.
Beyond hiking, the lakes and surrounding areas are perfect for various outdoor activities. On the Embalse del Tranco, you can enjoy boat trips, including those on a solar-powered boat, and canoeing. Cycling is also popular, with routes like 'Embalse del Anchuricas by the Mirador de La Novia — circular by the Sierra de la Graña'. Explore more cycling options on the Cycling around Sierra De Segura guide or for road cycling, check the Road Cycling Routes around Sierra De Segura guide.
The Embalse del Tranco is one of Spain's largest reservoirs, often called a 'sea' in the heart of the natural park. Completed in 1944, it's a significant engineering feat and a major tourist draw. Its picturesque surroundings offer boat trips, canoeing, and extensive shores to explore. The Trail next to the Tranco reservoir provides a great way to experience its beauty.
Yes, the Presa de Siles is a more recent engineering work, completed in 2015. This reservoir, fed by the Guadalimar and Carrizas rivers, spans 213 hectares and offers spectacular landscapes and opportunities for outdoor activities, making it an ideal spot for nature enthusiasts.
Visitors frequently highlight the tranquil and unspoiled environment. Many appreciate the refreshing experience of swimming in natural pools like the Calavera Waterfall, especially after a hike. The crystal-clear waters of places like the Cerrada del Utrero Reservoir are also highly valued for rest and relaxation. The unexpected beauty of spots like the Lagoon of Black Waters after an uphill climb is also a common delight.
The region's lakes are enjoyable throughout much of the year. For swimming and water activities, the warmer months are ideal. During summer, the sun illuminates the Calavera Waterfall pool, making it particularly inviting. For hiking and general exploration, spring and autumn offer pleasant temperatures and vibrant natural scenery.
The Embalse de Las Anchuricas is situated on the Segura River in Santiago-Pontones. Created in 1957, it is a beautiful natural spot within the park and part of the Segura Hydrographic Confederation. You can also visit the Anchuricas Reservoir Dam.
Yes, the La Vieja Reservoir is another significant body of water in the region, offering scenic views and opportunities for exploration.


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