Best lakes around Doucier are found in the Jura department of France, a region shaped by glacial activity. This area is renowned for its picturesque lakes, with Lac de Chalain being a primary attraction. The natural landscape offers diverse aquatic and outdoor activities. Doucier serves as a central point for exploring these natural features.
Last updated: June 23, 2026
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🌿 Lake Narlay: Essential Information Location: Frasnois municipality, in the Lakes Region (Jura). Altitude: 748 m. Surface area: 41 ha. Depth: Up to 40 m, making it the deepest lake in the Jura. Origin: Glacial lake, likely formed by a rockfall. Environment: Meadows, forests, peat bogs, Natura 2000 and Ramsar sites. (Copilot)
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Small, rocky stretch of beach that you can climb down to, as well as good views of Lac Le Grand Maclu.
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Lac d'Ilay, also called Lac de la Motte, is a lake in the Jura department of France, about 14 km south of Champagnole in Franche-Comté. It lies at an altitude of 774 m in the municipalities of Le Frasnois and La Chaux-du-Dombief and covers an area of approximately 0.7 km². The lake is 1.9 km long, has a maximum width of 400 m, and has a small island (Île de la Motte). Its greatest depth is 32 m.
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Lac de Narlay is a lake in the Jura department of France, about 10 km south of Champagnole in Franche-Comté. It lies at an altitude of 748 m in the municipality of Le Frasnois and covers an area of approximately 0.4 km². The lake is 950 m long and 625 m wide. Its maximum depth is 40 m.
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Lacs de Maclu are two adjacent lakes in the western part of the French Jura, in the Jura department of Franche-Comté. They are located at an elevation of 779 m in a depression in the High Jura, in the region of the Five Lakes near Le Frasnois, about 12 km south of Champagnole. The Petit Maclu, located to the northeast, has an area of 5 hectares, a length of about 500 m, and a maximum width of about 120 m. Its greatest depth is 11 m. It lies entirely within the municipal territory of Le Frasnois.
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Easy, shaded path, perfect for cooling off in hot weather.
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Easy path to walk in the shade, very welcome in case of strong heat.
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Among the most popular lakes, Lake Narlay is highly regarded for its scenic path through forests and meadows, where swimming is permitted. Visitors also frequently enjoy Petit Maclu Lake, known for its rich wildlife habitat as part of a Natura 2000 area, and Lake Ilay, which features a small island and offers easy walks around its perimeter.
Families will find many activities, especially at Lac de Chalain, which offers three supervised beaches ideal for swimming in summer. You can also enjoy non-motorized water sports like paddleboarding, canoeing, kayaking, and pedal boats. The Domaine de Chalain leisure park provides additional amenities such as sports fields, playgrounds, and mini-golf. Petit Maclu Lake and Lake Ilay are also noted as family-friendly.
Yes, the region offers numerous trails. Lac de Chalain has a dedicated path around the lake suitable for walking or mountain biking, including a popular 13.5 km loop. For more options, you can explore various running trails, such as the 'Chalain Lake Viewpoint – View of Lake Chalain loop from Doucier', or gravel biking routes like the 'View of Lac de Narlay – Shore of Lac de Narlay loop from Fontenu'. You can find more details on these activities in the Running Trails around Doucier and Gravel biking around Doucier guides.
The summer months are ideal for visiting, especially if you plan to swim or engage in water sports, as the water temperature at Lac de Chalain can reach 24-25 degrees Celsius. The pleasant weather also makes it perfect for hiking and cycling around the lakes.
For breathtaking panoramic views, visit the Three Lakes Viewpoint, which offers a clear vista of three lakes and their unique whitish rims. The Fontenu panoramic viewpoint also provides stunning vistas of Lac de Chalain. Additionally, the 'Belvedere des 4 lacs' offers a panoramic view of Lac d'Ilay, Lac du Petit Maclu, Lac du Grand Maclu, and Lac de Narlay.
Yes, Lac de Chalain is historically significant due to its prehistoric pile-dwelling settlements dating from 4000-750 BC. These settlements are classified as French historical monuments and were added to the UNESCO World Heritage List in 2011. Artifacts from excavations are preserved at the Musée d'Archéologie du Jura in Lons-le-Saunier.
Yes, swimming is permitted in several lakes. Lac de Chalain offers three supervised beaches, and its waters can be quite warm in summer. Lake Narlay also allows swimming, making it another excellent option for a refreshing dip.
Lac du Val is particularly well-known as a fishing lake. It is well-stocked with a diverse fish population, including mirror and common carp weighing over 62lb and catfish over 60lb. It offers six swims for anglers, including options for social fishing. Fishing for whitefish and pike is also popular at Lac de Chalain.
The lakes around Doucier are unique due to their glacial origins, resulting in stunning turquoise waters and dramatic limestone cliffs, particularly at Lac de Chalain. The region also features a distinctive 'whitish rim' on some lakes, visible from viewpoints like the Three Lakes Viewpoint, which is a chemical phenomenon involving chalk at the lake bottoms. The area also includes a chain of interconnected lakes like the Maclu lakes and Lac d'Ilay, and the deepest lake in the district, Lake Narlay.
While specific public transport details are not readily available, Lac de Chalain's Doucier beach is accessible via the D27. Be aware that parking charges may apply during peak season (July-August) at popular spots like Lac de Chalain.
Yes, Lake Ilay offers a beautifully situated and easy walk around its perimeter. The path around Lake Narlay is also described as charming and suitable for a pleasant stroll through forests and meadows.


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