Lakes around Riaillé are notable for their historical connection to the region's iron industry and their current recreational offerings. The area features several significant bodies of water, including the Étang de la Poitevinière, Étang de la Provostière, and the larger Lac de Vioreau. These lakes provide opportunities for fishing, walking, and enjoying the natural landscape. The region's waterways also play a role in the supply system for the Nantes-Brest canal.
Last updated: August 30, 2026
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The west bridge of Lake Voireau offers a beautiful, unobstructed view of the reservoir. The largest body of water in Loire-Atlantique, this lake stretches through the heart of the forest. Its wooded banks and landscaped beaches make it a pleasant stopover for a nature break or a swim.
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A vast industrial forge site dating back to the 17th century. The natural setting is also remarkable, with the dam on the Don River creating a splendid reservoir that supplied the forges. A favorite is Rue des Rochers Bleus and its hanging pine tree.
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The Provostière pond, with a surface area of 73 ha, is connected to the Vioreau lake by the Rigole des Ajaux. This complex is part of the supply system of the Nantes-Brest canal. Its hydraulic management is ensured by the Loire-Atlantique Department, which has owned it since 2008. A 5.5 km path on which a bird observatory is located allows you to go around the pond in about 1h30.
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The surroundings of the dam are currently under construction and closed to the public (6/28/24)
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Dam under construction until July 2024. No water in the lake.
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A quiet deck with stunning views of the lake. A great place to take a break from your run and take in the scenery.
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A pond for fishermen (and walkers), for swimming you have its neighbor the Lac de Vioreau.
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Many lakes in the Riaillé area have significant historical ties to the region's iron industry. For instance, the Étang de la Poitevinière and the Étang de la Provostière were crucial for cannonball manufacturing during Napoleon's era and provided water power for forges until 1875. The Vioreau Reservoir Dam, built in 1835, is also a historical landmark, serving as the main water supply for the Nantes-Brest canal.
Yes, the lakes offer several pleasant walking and hiking opportunities. The Étang de la Provostière features a dedicated hiking trail that encircles the lake, perfect for a leisurely stroll or a picnic. For more structured routes, you can explore various hiking trails around Riaillé, including routes around Provostière Pond.
While some lakes are primarily for fishing or walking, Lac de Vioreau is known for its landscaped beaches and is a popular spot for swimming. The West bridge at Lac de Vioreau also offers clear views and is a pleasant stop for a nature break or a swim.
The lakes around Riaillé offer family-friendly activities such as walking, picnicking, and enjoying nature. The Étang de la Provostière is recommended for its walking trail and picnic spots. La Forge Neuve, a historical site with a reservoir, is also considered family-friendly.
Absolutely. The West bridge at Lac de Vioreau provides stunning, unobstructed views of the reservoir and its wooded banks. The View of the Étang de la Provostière is also a popular viewpoint for walkers and birdwatchers, featuring a bird observatory along its path.
The Étang de la Poitevinière is a prime destination for carp fishing in France, offering 32 dedicated fishing stations with pontoons. It's known for its largely native carp population, with an average weight of 13-14 kg. The Étang de la Provostière is also a popular spot for fishermen.
Yes, there are several cycling routes that explore the area's lakes. You can find various cycling tours around Riaillé, including routes that pass by the Étang de la Poitevinière, Étang de la Provostière, and Lac de Vioreau, offering options for different difficulty levels.
Lac de Vioreau is the largest body of water in Loire-Atlantique, spanning 200 hectares. It's crucial for supplying water to the Nantes-Brest Canal via its reservoir and dam. It's also valued for its beautiful wooded banks, landscaped beaches, and recreational opportunities like swimming and nature breaks.
Yes, the area around the lakes provides excellent running opportunities. You can find several running trails around Riaillé, including loops around Lac de Vioreau and the Étang de la Provostière, ranging from moderate to difficult.
The Étang de la Poitevinière is unique for its status as a private fishing area, particularly renowned for carp fishing. Historically, it was a source of iron ore for cannonball manufacturing. Its natural and preserved environment, along with its large native carp population, makes it a special destination for anglers.
The local lakes play a vital role in the water supply system for the Nantes-Brest Canal. The Étang de la Provostière and Étang de la Poitevinière are connected by a channel called the 'rigole alimentaire des Ajaux,' which eventually flows into Lac de Vioreau. Lac de Vioreau, with its dam built in 1835, serves as the primary water supply reservoir for the canal.
Yes, there are easy walking trails available. For example, a 5.5 km path around the Étang de la Provostière is considered an easy walk, taking about 1 hour and 30 minutes. You can also find other easy hiking routes around Riaillé, such as the Provostière Pond – Memorial stone loop.


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