Top 6 Lakes around Fos
Lakes around Fos are primarily characterized by *étangs* (ponds or lagoons) and saline marshes, which are integral to the region's ecological landscape. These bodies of water, such as the Étang de l'Estomac and Étang de l'Engrenier, are significant natural areas known for their diverse flora and fauna. The area provides habitats for various species, including over 250 species of birds, making it a notable ecological site. It offers opportunities for nature enthusiasts and birdwatchers to explore unique ecosystems.
Best lakes…
Last updated: July 6, 2026
The Red Lands of Salagou
Highlight • Natural
It is the iron oxide present in the rock that gives clay and sandstone this particular red color.
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Little Streams Trail at Lake Salagou
Highlight (Segment) • Trail
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Olivettes Dam
Highlight • Monument
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Lac de Vailhan
Highlight • Lake
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Lac de Vailhan
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At the turn of the relief, the lake of Olivettes appears as a breath of fresh air in the landscapes of the Avant-Monts. The water reservoir is set in a haven of limestone hills, where the lines of Pioch Perdut and Roc de Castel Viel structure the horizon.
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Magnificent terrain, it's fun on gravel, and surely even more so on a mountain bike! Plus the scenery is too beautiful!!
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Along the DFCI, the view of the lake is breathtaking. The route was tiring because that day there was a fairly strong wind, and we often had it in our faces. Some unpaved paths are quite difficult for beginners, so be careful. But otherwise a superb walk, for the Moureze cirque we returned the next day. It is possible to do the short 3km route by combining it with the bike if you are in good physical condition.
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This tour is only for experienced mountain bikers. Not suitable for "normal" cyclists in our opinion We had to push our bikes uphill and downhill on the sections directly by the lake because the paths were too rocky. Despite everything, it was a great highlight
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wonderful outing
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characteristic landscape at Lac du Salagou
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This beautiful gravel path winds through the red earth of Lac du Salagou. It is the iron oxide present in the rock that gives clay and sandstone this particular red color.
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Superb place with a splendid landscape. The road is not in very good condition but is however not dangerous. And it's worth taking it.
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Frequently Asked Questions
What kind of lakes can I expect to find around Fos?
The area around Fos is primarily characterized by *étangs* (ponds or lagoons) and saline marshes, which are significant natural areas known for their diverse flora and fauna. These include the Étang de l'Estomac and Étang de l'Engrenier. Further afield, you'll also find larger bodies of water like Lac du Salagou and Lac de Vailhan, offering different natural experiences.
What are the most popular natural features to explore near Fos?
Visitors particularly enjoy The Red Lands of Salagou, where a beautiful gravel path winds through distinctive red earth. This area is notable for the iron oxide in the rock, giving the clay and sandstone its unique color. The *étangs* themselves are also popular for their ecological significance and biodiversity.
Are there any man-made landmarks or reservoirs worth visiting?
Yes, Olivettes Dam is a notable man-made monument and reservoir. It was built to control the Herault River and offers a quiet, relaxing place with a small pond downstream suitable for unsupervised swimming and picnics.
What kind of hiking trails are available around the lakes?
You can find a variety of hiking trails. For example, the Little Streams Trail at Lake Salagou offers a tour of about 20 km with slightly wavy terrain and 'lunar landscape' views. There are also several routes around Lac de Vailhan and Olivettes Dam, ranging from easy to moderate difficulty. For more options, explore the Hiking around Fos guide.
Are there opportunities for mountain biking near the lakes?
Absolutely. The area around Lac Salagou is particularly popular for mountain biking. You can find challenging routes like the Tour of Lake Salagou (MTB/FFC No. 1), which offers rolling and technical terrain. For more MTB trails, check out the MTB Trails around Fos guide.
Can I go cycling around the lakes?
Yes, there are cycling routes available. For instance, you can find moderate to difficult routes around Lac des Olivettes and Lac de Vailhan, offering scenic views. Discover more options in the Cycling around Fos guide.
Are there any family-friendly lakes or activities?
The area downstream of Olivettes Dam is considered family-friendly, offering a small pond for unsupervised swimming and picnic/barbecue tables. The ecological sites around the *étangs* also provide opportunities for nature observation, which can be a peaceful family activity.
What kind of wildlife can I observe around the *étangs*?
The *étangs* and saline marshes are vital natural habitats, especially for birdwatching. The area is known for its diverse flora and fauna, including over 250 species of birds. Numerous species of ducks and waders use the area for wintering and nesting, attracted by the abundance of micro-shellfish.
Where can I find scenic views of the lakes?
Many spots offer beautiful views. The Red Lands of Salagou provides stunning vistas of Lac du Salagou with its unique red landscape. The Little Streams Trail at Lake Salagou also offers 'lunar landscape' views. Additionally, Lac de Vailhan is described as a superb place with a splendid landscape.
What do visitors enjoy most about the lakes around Fos?
Visitors frequently highlight the unique natural beauty, especially the distinctive red earth landscapes around Lac du Salagou, and the tranquility of places like Olivettes Dam. The ecological richness and opportunities for birdwatching in the *étangs* are also highly appreciated.
Is it possible to swim in any of the lakes or nearby waters?
While swimming might not be permitted in all the main reservoirs, downstream of Olivettes Dam, there is a small pond where unsupervised swimming is possible. The region also has 6 km of natural beaches along the Mediterranean coast for swimming.
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