Best lakes around Port are characterized by their glacial origins and limestone surroundings. This region features a landscape where water bodies are often nestled among cliffs, offering distinct visual contrasts. The area provides opportunities for both tranquil observation and active exploration of its natural features.
Last updated: July 18, 2026
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The Marron ponds are named after a family from Brénod, it is not a reference to the color of the water. Only one of them remains filled with water all year round. This one served as a water reserve and fishing spot for the monks of the Meyriat abbey. In spring, a multitude of water lilies cover the surface.
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Beautiful, simple, easy walk; lots of traffic noise on the "road" section, a bit of a shame, but the color of the water is magical
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From here, you can see the Lac de Sylans very well, the old ice houses located on its edge, and the view extends to the mountains of the Ain.
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Unfortunately I was unlucky with the weather, but even as I drove past the place looked very nice, lots of grass and a place to swim.
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This beautiful spot is ideal for taking a break. There are benches and public restrooms.
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A magnificent course!!!
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The northern part of the lake borders the village of Port.
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Several lakes in the Port region are great for families. Lake Nantua and Lac de Nantua are both noted for being family-friendly, offering beautiful scenery and recreational opportunities. Additionally, Étang de Lalleyriat provides benches and public restrooms, making it a convenient spot for a family break.
The lakes around Port are known for their striking natural beauty. Lake Nantua, a glacial lake, is famous for its crystal-clear waters that can appear sapphire or emerald, backed by dramatic limestone cliffs. The nearby Lac de Sylans also offers impressive views extending to the mountains of the Ain. At Marron Ponds, you can observe a multitude of water lilies covering the surface in spring.
Yes, swimming is a popular activity. Lac de Nantua is highlighted as a favorite site for bathing enthusiasts in the region, with its clear waters. Always check local regulations and conditions before entering the water.
Yes, the region offers various hiking trails. You can find routes like the 'Lake Nantua – View of Lake Nantua loop from Nantua' or the 'Cascade du Palin – Lake Nantua loop from Nantua' which incorporate the stunning lake scenery. For more options, explore the MTB Trails around Port guide, which also includes hiking-friendly paths.
There are several cycling routes catering to different styles. For mountain biking, consider the 'Lac de Nantua – Lake Nantua loop from Port'. Road cyclists might enjoy the 'Étang de Lalleyriat – Col de la Cheminée loop from Le Poizat-Lalleyriat' or the 'Lake Genin – Lake Genin loop from Charix'. You can find more details in the Traffic-free bike rides around Port guide.
Lake Nantua is renowned for its stunning vistas, with its sapphire or emerald waters contrasting against limestone cliffs. Additionally, the View of Lake Sylans highlight provides an excellent perspective of Lac de Sylans and the surrounding mountains.
While Lake Nantua is popular, smaller spots like Étang de Lalleyriat offer a tranquil setting for a break. The Marron Ponds, with only one remaining filled year-round, also provide a more secluded natural experience, especially when water lilies cover the surface in spring.
The lakes have a rich history. Lake Nantua is a glacial lake, and its beauty was even noted by Alexandre Dumas in 1834. The View of Lake Sylans also points to old ice houses located on its edge, hinting at past industries. The Marron Ponds were historically used as a water reserve and fishing spot by monks from the Meyriat abbey.
Yes, some lakes offer facilities for visitors. Étang de Lalleyriat is equipped with benches and public restrooms, making it a convenient stop. At Lac de Nantua, you can find refreshments in the town of Nantua.
While specific wildlife is not detailed for every lake, the natural settings suggest diverse ecosystems. The Marron Ponds are notable for the multitude of water lilies that cover their surface in spring, indicating a rich aquatic plant life that supports various insects and potentially amphibians or birds.


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