Best lakes around Saint-Viaud offer diverse outdoor experiences in the Loire-Atlantique department. The primary feature is the Lac de Saint-Viaud, an artificial lake covering 4 hectares, known for its comprehensive leisure base. This area provides various activities, from water sports to walking paths, making it a significant recreational destination. The region features a mix of artificial lakes, former quarries, and natural ponds, providing varied landscapes for exploration.
Last updated: July 5, 2026
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Excellent mountain bike trails along the banks of these two magnificent lakes. Caution ⚠️ Sometimes flooded in winter!
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Not a very difficult circuit with beautiful passages on the Gatineaux and Gros Caillou ponds. The starting point can be from the charming port of St Michel chef chef
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This lake is otherwise called the Mabille valley lake. It is an artificial lake. Access to the leisure center is free. The activities offered here are: picnic on the bank, play areas for the youngest, fishing.
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The “Blue Hole” brings together three old granite quarries, at a place called “La Garenne”, on the road to Donges. They were formerly located on the banks of the Loire. They filled naturally with water after their operation ended in 1980. Its name is due to the blue color of the water.
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Former limestone quarry now transformed into a protected natural area with a pond in the northern part and a wetland in the southern part. Important birdlife. The paths and trails are well maintained, mainly for mountain biking and gravel.
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The Lac de la Vallée Mabille is an ideal place to run. The tracks are impeccable thanks in particular to the GR3 which runs along its banks.
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Lac de la Vallée Mabille, more commonly known as Lac de Savenay, is a beautiful body of water located at the eastern entrance to the town of Savenay. Artificial, the lake hosts many activities on its shores: a swimming pool, a campsite, a leisure park, a golf course and a hotel-restaurant. Very famous among the locals, this little green setting is also a delight for long-distance hikers. Indeed, the iconic GR 3 meanders along its banks.
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Three old granite quarries, abandoned in 1980, which naturally filled with water to form beautiful blue ponds, popular with fishermen. Many of the cobblestones of Nantes and Nazaire streets come from this place.
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The lakes around Saint-Viaud offer a wide range of activities. At the main Lac de Saint-Viaud, you can enjoy swimming, wakeboarding, paddleboarding, kayaking, fishing, and various land sports like tennis and pétanque. Other lakes, such as Mabille Valley Lake, also known as Lac de Savenay, feature leisure parks and are popular for long-distance hiking. The Gatineaux and Gros Caillou Ponds are known for mountain bike trails.
Yes, the Lac de Saint-Viaud is highly family-friendly, offering a supervised sandy beach for swimming, playgrounds, picnic areas, and a 1.5 km accessible walking path. Mabille Valley Lake (Lac de Savenay) also has a leisure park and a swimming pool, making it a great option for families.
Yes, swimming is permitted and popular at the Lac de Saint-Viaud. It features a sandy beach with supervised swimming during the summer months (typically late June to late August), daily except Mondays, from 1:30 PM to 6:30 PM. The supervised zone is clearly marked and includes a shallow section for children.
The Lac de Saint-Viaud is well-equipped for accessibility. It provides adapted restrooms, mats leading to the swimming area, and an amphibious chair for people with reduced mobility. The 1.5 km walking path around the lake is designed to be accessible for wheelchairs, strollers, and small bikes.
Fishing is a popular activity in the region. The Lac de Saint-Viaud has a designated section reserved for fishing, particularly for carnivorous fish. The Blue Hole, formed from old granite quarries, is also a well-known spot for fishermen. Fishing permits can typically be obtained locally.
Absolutely. The Lac de Saint-Viaud features a scenic 1.5 km walking path, a health course, and an educational trail focusing on local tree species. For longer hikes, the iconic GR 3 trail meanders along the banks of Mabille Valley Lake. You can find more hiking options in the region by exploring the Gravel biking around Saint-Viaud guide, which includes routes like the 'Gros Caillou Pond – Chapelle Saint-Vital loop'.
A notable unique feature is The Blue Hole, a nature reserve comprising three old granite quarries that naturally filled with water, creating distinctive blue ponds. These quarries were abandoned in 1980 and are popular with fishermen.
While the region research does not specify dog rules for all lakes, it's common for dogs to be allowed on walking paths around lakes, often on a leash. However, specific restrictions might apply to swimming areas or designated leisure zones. It's always best to check local signage upon arrival.
Yes, the area offers various cycling and mountain biking opportunities. The Gatineaux and Gros Caillou Ponds are known for their excellent mountain bike trails. For more options, you can explore routes in the MTB Trails around Saint-Viaud guide or the Cycling around Saint-Viaud guide, which include trails like the 'Lake for Water Sports – Saint Vital Chapel loop'.
The Lac de Saint-Viaud offers extensive facilities including a sandy beach with supervised swimming, a wakeboard park, tennis courts, pétanque courts, a 450m² skatepark, picnic areas with collective barbecues, children's playgrounds, and a 1.5 km accessible walking path. There's also free Wi-Fi, charging stations, a 'plagiothèque' for borrowing beach games, and a dedicated parking area for campervans with services.
While the Lac de Saint-Viaud is a popular leisure base, for a potentially quieter experience focused on nature or specific activities, consider exploring the Blue Hole for fishing or the Gatineaux and Gros Caillou Ponds for mountain biking, which might offer a more secluded atmosphere depending on the season.
The Lac de Saint-Viaud provides a dedicated parking area, including spots for campervans. While the region research doesn't explicitly state 'free' for all parking, leisure bases like this often offer complimentary parking for visitors. It's advisable to check local signage upon arrival for any specific parking regulations or fees.


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