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Ardennes

Top 20 Lakes in the Ardennes

Best lakes in the Ardennes are found across Belgium, France, and Luxembourg, offering diverse natural landscapes. This region features lush greenery, extensive forests, and significant elevation changes, making it suitable for outdoor activities. Many of these lakes are man-made reservoirs, often created for hydroelectric power or water supply, blending seamlessly into the natural environment. They provide various recreational opportunities, serving as central points for nature observation and water sports.

Best lakes in the Ardennes

  • The most popular lakes is Robertville Dam, a man-made monument that serves as a starting point for walks in the surroundings, including a path to Reinhardstein Castle. It features a large barrier wall.
  • Another must-see spot is Nisramont Dam, a lake and man-made monument. This dam, built in 1958, primarily functions as a drinking water reservoir and for electricity generation, surrounded by hiking trails.
  • Visitors also love View of the Abbey's castle, a viewpoint overlooking a pond where a castle is reflected. This pond once served as a reservoir for hydraulic power, and the castle, built in the 1960s, is privately owned.
  • Ardennes is known for artificial lakes, reservoirs, and natural lakes. The region offers a variety of lakes to see and explore, catering to different interests.
  • The lakes in the Ardennes are appreciated by the komoot community. There are more than 100 highlights with over 2000 upvotes and more than 800 photos shared by visitors.

Last updated: April 25, 2026

Robertville Dam

Highlight • Monument

The dam itself is not crazy but it is a good starting point for walks in the surroundings, and in particular the one that leads to the very close Reinhardstein castle.

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Nisramont Dam

Highlight • Lake

It is an awesome place! Both by the dam itself and its engineering, but also by the natural beauty of the site. A real breath of air and nature.

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Lower Coo Reservoir

Highlight • Lake

The Coo reservoir supplies the Coo-Trois-Ponts pumped storage power station with water. This is the so-called lower reservoir, which occupies an area of 72 hectares when it is full. Source: Wikipedia

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A green site, where you can discover two lakes (upper and lower) which, thanks to the passage of water in the turbines, produce electricity. A walking path invites you to go around the lower lake, before leading you to the Coo waterfall, where you will find various catering offers.

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At this point - at the Barrage de Nisramont reservoir - the western and eastern Ourthe flow together. The Ourthe Occidentale (so-called western Urt) is about 49 kilometers long and rises 506 meters above sea level near the eponymous village of Ourt in the municipality of Libramont-Chevigny. The Ourthe Orientale (so-called eastern Urt), which is around ten kilometers shorter, rises 510 meters above sea level between Ourthe, Deiffelt and Beho.

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Peter 🥾🐾🌲
March 23, 2026, Nisramont Dam and Reservoir

Built in 1958 to supply the region with drinking water and for the production of hydroelectricity. You can cross the dam and there is a water purification station and a fish ladder.

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At the beginning of July the lake is filled to its maximum capacity.

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Paved, no cars, partly sun and shade, quiet

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superb walk

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superb in good weather!

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View of barrage...

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The Nisramont dam complex was built in 1958. The intention was actually to create a much larger lake with a dam at the Celtic site of Le Cheslé. Not coincidentally there, because as we will notice during the next stage on the Escapardenne Eislek Trail, the Ourthe is strongly incised here and it is therefore technically ideal to dam even further downstream from that deep incision. The storage capacity is expected to be up to 250 million m³. The current Nisramont dam was therefore built as a temporary project, but more than 50 years later it is still standing.

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Here is a small hut overlooking the Ourthes.

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Frequently Asked Questions

What kind of water sports can I do at the Ardennes lakes?

The Ardennes lakes offer a wide range of water sports. At the L'Eau d'Heure Lakes, you can enjoy kayaking, canoeing, windsurfing, paddleboarding, water skiing, sailing, jet skiing, motor boating, rowing, pedalos, swimming, and diving. Lac de Nisramont is great for stand-up paddleboarding, kayaking, and packrafting. Other lakes like Bütgenbach Lake, Lac des Vieilles Forges, Lac de Bairon, and Haute-Sûre Lake also provide opportunities for activities such as swimming, windsurfing, pedal boating, canoeing, and sailing.

Are there good hiking trails around the Ardennes lakes?

Yes, many lakes in the Ardennes feature excellent hiking trails. For instance, a challenging 14-kilometer trail with significant elevation changes encircles Lac de Nisramont. Bütgenbach Lake has a 10-kilometer trail around its edge, and Lac des Vieilles Forges offers an 11-kilometer trail suitable for hiking and mountain biking. The area around Haute-Sûre Lake, part of the Upper Sûre Nature Park, is also known for its well-maintained hiking trails. You can find various hiking routes, including easy and difficult options, near the lakes. For example, explore routes like 'Panoramic views, rocks and torrents in Xhoffraix' or 'Lake Coo Loop' via the waterfall hikes guide.

Which lakes offer impressive viewpoints or unique natural features?

Several lakes in the Ardennes boast impressive viewpoints and unique features. The L'Eau d'Heure Lakes complex features the largest dam in Belgium, offering a 360-degree panoramic view from its 107-meter tower. Gileppe Lake is notable for its 77-meter observation tower, providing stunning vistas of the surrounding hills and forests. The Esch-sur-Sûre Dam also offers wonderful views of the Upper Sûre Lake. Additionally, the Robertville Dam is a popular starting point for walks with scenic surroundings.

Are there family-friendly activities at the lakes in the Ardennes?

Absolutely. The L'Eau d'Heure Lakes are a major family hub with an Aquacentre for children's water games, mini-golf, and the Red Crocodile amphibious vehicle tours. Conchibois Lake has a playground and skate park. Lac des Vieilles Forges offers supervised swimming, a sandy beach, a tree-climbing park, nature games, and the Wi-Splash water park. Lac de Bairon also has a small beach with supervised swimming and activities like archery and mini-golf. The Worriken sports and leisure center near Bütgenbach Lake provides additional family activities.

Where can I go swimming in the Ardennes lakes?

For swimming, Robertville Lake is an excellent choice, featuring a professionally managed swimming area with changing cabins, showers, a cafeteria, and lifeguards. Conchibois Lake is known for its high water quality and has been awarded the 'Blue Flag' label, offering a refreshing stop. Lac des Vieilles Forges and Lac de Bairon both provide supervised swimming during the summer months with sandy beaches. Haute-Sûre Lake also allows swimming in designated areas.

Can I observe wildlife or enjoy nature at the Ardennes lakes?

Yes, the Ardennes lakes are rich in natural beauty and offer opportunities for wildlife observation. Haute-Sûre Lake is a central attraction of the Upper Sûre Nature Park, perfect for bird watching and enjoying pristine natural beauty. Lac de Bairon is a recognized bird-watching center, home to approximately 150 bird species, with a discovery trail for nature observation. The lush greenery and forests surrounding lakes like Lac de Nisramont and Robertville Lake also provide serene environments for reconnecting with nature.

Are there cycling or mountain biking opportunities near the Ardennes lakes?

Yes, the Ardennes region is well-suited for cycling and mountain biking. Many lakes, such as the L'Eau d'Heure Lakes and Lac des Vieilles Forges, offer dedicated cycling and mountain biking trails. The area around Haute-Sûre Lake is also excellent for cycling. You can explore various routes, including challenging gravel biking options, in the region. Check out the gravel biking guide for routes like the 'Houffalize MTB Network Loop' or 'The High Fens loop from Ovifat'.

When is the best time of year to visit the lakes in the Ardennes?

The best time to visit the lakes in the Ardennes largely depends on your preferred activities. For water sports, swimming, and enjoying beaches, the summer months (June to August) are ideal. Spring (April to May) and autumn (September to October) offer pleasant temperatures for hiking and cycling, with beautiful scenery as the foliage changes. Winter can be picturesque, but many water-based activities may not be available.

Is parking available at the major lakes in the Ardennes?

Yes, major lake destinations in the Ardennes typically offer parking facilities. Popular sites like the L'Eau d'Heure Lakes, Lac de Nisramont, and Lac de la Gileppe are equipped with parking areas to accommodate visitors. It's always advisable to check specific location details if you plan to visit during peak season, as parking can fill up quickly.

Are the lakes in the Ardennes dog-friendly?

Many areas around the Ardennes lakes are dog-friendly, especially for walks and hikes. However, specific regulations regarding dogs on beaches, in swimming areas, or within nature reserves can vary by lake. It's generally recommended to keep dogs on a leash and clean up after them. Always check local signage or specific lake websites for detailed rules before your visit.

What historical or cultural sites are near the Ardennes lakes?

The Ardennes region has a rich history, and some lakes are close to notable sites. For example, Robertville Lake is a short walk from the picturesque Reinhardstein Castle. The View of the Abbey's castle overlooks a pond that once served a hydraulic power purpose, reflecting a castle built in the 1960s near the Orval Abbey. Lac de Bairon was originally created in the 19th century as a reservoir for the Ardennes Canal, adding to its historical context.

Can I find amenities like cafes or accommodation near the Ardennes lakes?

Yes, many of the more developed lake areas offer amenities. The L'Eau d'Heure Lakes complex includes a hotel, holiday apartments, and various dining options. Lac de Nisramont has a tavern by the dam. Conchibois Lake features a cafeteria. In general, popular lakes are often situated near towns or villages where you can find cafes, pubs, and accommodation options.

Most popular routes in the Ardennes

Family-friendly hikes in the Ardennes

Most popular attractions in the Ardennes

Natural Monuments

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

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