Lakes around Ham-Sur-Heure-Nalinnes are primarily centered around the Lacs de l'Eau d'Heure, a significant artificial lake complex in Wallonia. This area, spanning parts of the Hainaut and Namur provinces, offers a diverse natural landscape. It features a preserved environment with extensive water bodies, forests, and meadows, providing a setting for various outdoor activities. The complex is recognized as the largest lake area in Belgium.
Last updated: June 30, 2026
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The origin of the dam lies in the need to regulate water flows in the region. In a landscape characterized by calcareous soils, hilly relief, and fast-reacting watercourses, floods and seasonal water fluctuations were a recurring phenomenon. The construction of weirs and small dams like the one at Féronval therefore served to stabilize water levels, distribute water, and in some cases also support energy or irrigation.
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The Féronval dam is part of the impressive Les Lacs de l’Eau d’Heure lake complex, the largest artificial lake area in Belgium. These dams and reservoirs were built in the 1970s to improve water quality in the region, support the flow of the Sambre and Meuse rivers, and make the Charleroi–Brussels Canal suitable for larger inland vessels. The Lac de Féronval, formed by the dam, is one of the smaller but important links within this hydrological system. The dam is located near the N907, where various hiking and cycling routes pass. The surroundings are quiet, green, and very popular with recreational users. Anglers like to come here because fishing from a boat on Lac de Féronval is permitted, which is not possible on all lakes in the area. Several beautiful walks start around the dam. A popular route is the Balade du Grand Cerf, an accessible tour of about eight kilometers that starts at the Féronval pre-dam. The walk leads through forests and open fields and regularly offers beautiful views of the Lac de l’Eau d’Heure. There are picnic spots and ample parking along the way, making it an ideal outing for families or leisurely walkers. Also
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Large fishing ponds (private). Magnificent place for hiking, running or cycling. The place is quiet, the wide path between the two ponds is accessible to the public to reach Baconval, Gourdinne, etc. but also the forest massif watered by the Ruisseau du Moulin. The surroundings are varied: rural, wooded and with scattered housing.
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Lake Ry-Jaune is the fourth largest lake in terms of surface area of the five reservoirs. It is located just behind the Eau d’Heure, Plate-Taille and Falinfluence lakes. And just in front of Féronval.
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From here you can see the jet skis doing their magic on the water. If they see you photographing, they might come and put on a show.
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At Lac de l'Eau d'Heure you can not only go water skiing, but also try the so-called "flyboards" and other water sports. There is also a restaurant here.
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From this point you can see the jet skis at work and the fish swimming in the water.
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While Ham-Sur-Heure-Nalinnes has local water bodies like the Nalinnes Ponds, the primary destination for a comprehensive lake experience in the broader region is the Lacs de l'Eau d'Heure. This complex includes five artificial lakes, with the Lac de la Plate Taille being the largest in Belgium. Other notable lakes in the complex are Lac de l'Eau d'Heure, Lac de Falemprise, Lac du Ry-Jaune, and Lac de Féronval.
The Lacs de l'Eau d'Heure are a hub for water sports, offering over 25 activities. You can enjoy sailing, kayaking, jet skiing, water skiing, wakeboarding, stand-up paddling, diving, and windsurfing. Natural swimming zones are available, particularly at Falemprise and Plate Taille lakes, with designated beaches. The Water sports center at Lac de l'Eau d'Heure is a great place to try activities like water skiing and flyboarding.
Yes, the area around the Lacs de l'Eau d'Heure offers numerous marked trails for walking and hiking. For example, near the Féronval Dam, you can find the popular Balade du Grand Cerf, an accessible 8-kilometer tour. You can also find various hiking routes in the region, such as those listed in the Hiking around Ham-Sur-Heure-Nalinnes guide, which include trails like the "Ham-sur-Heure Castle – Eau d'Heure Weir loop".
Absolutely. The Lacs de l'Eau d'Heure are very family-friendly, offering playgrounds, picnic areas, and educational insights at the Plate Taille visitor center. Many highlights, such as the Nalinnes Ponds, Lake Viewpoint, and Lac du Ry-Jaune, are categorized as family-friendly. There's also a large water park with indoor and outdoor swimming pools nearby.
While specific rules for dogs can vary by exact location around the vast Lacs de l'Eau d'Heure complex, generally, dogs are welcome on many of the walking and hiking trails, especially if kept on a leash. It's always a good idea to check local signage for any restrictions in specific recreational or swimming areas.
The Lacs de l'Eau d'Heure complex boasts a vast natural space covering 1,800 hectares, with 600 hectares of water, 600 hectares of forests, and 600 hectares of meadows. You can find numerous viewpoints, such as the Lake Viewpoint, offering sights of water sports activities. The Plate Taille Dam also features a 107-meter viewing tower with panoramic views of the entire lake area.
Fishing is a popular activity at several lakes. The Nalinnes Ponds are primarily known for fishing. At Lac de Féronval, fishing from a boat is permitted, which is a unique opportunity compared to other lakes in the area. Specific permits and regulations apply, so it's advisable to check with local authorities or fishing associations for the most current rules before you go.
The Lacs de l'Eau d'Heure are enjoyable year-round. Spring and summer are ideal for water sports, swimming, and enjoying the outdoor activities in warmer weather. Autumn offers beautiful scenery with changing foliage, perfect for hiking and cycling. Even in winter, the serene environment can be appealing for quiet walks, though many water-based activities might be closed.
Yes, the area around the Lacs de l'Eau d'Heure is well-equipped for cycling and mountain biking. The RAVeL network provides pleasant tours around the lakes, and there are numerous marked trails through the forests and meadows. You can find various routes in the Gravel biking around Ham-Sur-Heure-Nalinnes guide, such as the "Bois de Jamioulx – Ham-sur-Heure Castle loop".
Beyond water sports, the Lacs de l'Eau d'Heure offer several adventure activities. You can experience a tree-top adventure park (Natura Parc), take unique tours on the amphibious bus "Crocodile Rouge," or enjoy ULM flights for aerial views of the expansive lake complex.
The Lacs de l'Eau d'Heure area is a major tourist hub, so you'll find various accommodation options ranging from hotels and holiday homes to campsites. There are also numerous cafes and restaurants, including one at the Water sports center, offering places to eat and relax after your activities.


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