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France
Auvergne Rhône Alpes

Nantua

Top 5 Lakes around Nantua

Best lakes around Nantua are found in the Ain department of France, featuring glacial lakes set against limestone cliffs and the Jura Mountains. The region is known for its waters that display captivating color changes, from sapphire blue to emerald green. Many of these natural areas are designated as Sensitive Natural Areas, supporting diverse flora and fauna. The area provides a combination of natural landscapes and recreational activities.

Best lakes around Nantua

  • The most popular lakes is Lake Nantua, a lake that is sometimes sapphire and sometimes emerald in color. This glacial lake is backed by limestone cliffs and offers various water sports.
  • Another must-see spot is Lake Genin, a mountain lake with alpine fir trees and turquoise waters. It is known as "the little Canada of Haut-Bugey" and provides a good break during a tour.
  • Visitors also love Along Lake Coiselet, a quiet road that runs along the shore of the lake. This lake is a barrage of the Ain and offers beautiful landscapes.
  • Nantua is known for glacial lakes, mountain lakes, and barrages. The region offers a variety of lakes to see and explore, each with distinct characteristics.
  • The lakes around Nantua are appreciated by the komoot community, with more than 100 upvotes and over 30 photos shared across the highlights.

Last updated: May 8, 2026

Lake Nantua

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This glacial lake backed by limestone cliffs is sometimes sapphire and sometimes emerald in color - Alexandre Dumas wrote in his book Impression de voyage in 1834: “This pretty little sapphire blue lake set like a jewel, which nature fears to lose. »

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Lake Genin

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Nicknamed "the little Canada of Haut-Bugey", this mountain lake, with its alpine fir trees and turquoise waters, is an excellent mid-course break.

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Along Lake Coiselet

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A quiet road that runs along the shore of Lac de Coiselet. It is on the border between the departments of Ain and Jura.

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View over Lake Nantua

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At 300 meters, overlooking Lake Nantua, you can appreciate the colors of the water and the extent of its 41 hectares.

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Lac de Conflans

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This magnificent lake lies at the confluence of the Ain and Valouse rivers. It is located at the foot of the medieval Château de Conflans.

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Étang de Lalleyriat

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This beautiful spot is ideal for taking a break. There are benches and public restrooms.

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View of Lake Sylans

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From here, you can see the Lac de Sylans very well, the old ice houses located on its edge, and the view extends to the mountains of the Ain.

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Marron Ponds

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The Marron ponds are named after a family from Brénod, it is not a reference to the color of the water. Only one of them remains filled with water all year round. This one served as a water reserve and fishing spot for the monks of the Meyriat abbey. In spring, a multitude of water lilies cover the surface.

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Peney Viewpoint

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The Peney viewpoint overlooks Lake Sylans, offering a beautiful view. It is located at the level of the tunnel of the same name.

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Popular around Nantua

Grande Traversée du Jura en VTT — The Great Crossing of the Jura by MTB

Gems of the Ain — MTB routes amidst natural beauty

Grande Traversée du Jura - the gravel adventure

GRP Grand Tour de la Valserine

Cycling in the Ain – nature, heritage and the great outdoors

Secrets of the Ain – 10 wonderful watery hikes

Gravel Tours in the Jura Mountains

The thousand faces of the Jura Mountains – Grande Traversée du Jura on foot

Wine, cheese and cycling – day trips in the French Jura Mountains

A history of borders — La Grande Traversée du Jura

Other adventures around Nantua

Grande Traversée du Jura en VTT — The Great Crossing of the Jura by MTB

Mountain Biking Collection by

Katie-Jane L'Herpiniere

Tips from the Community

Nicolas Vergnaud
April 30, 2026, Belvédère du Peney

The Peney viewpoint overlooks Lake Sylans, offering a beautiful view. It is located at the level of the tunnel of the same name.

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The Marron ponds are named after a family from Brénod, it is not a reference to the color of the water. Only one of them remains filled with water all year round. This one served as a water reserve and fishing spot for the monks of the Meyriat abbey. In spring, a multitude of water lilies cover the surface.

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Lucie
August 27, 2025, Lac de Nantua

Beautiful, simple, easy walk; lots of traffic noise on the "road" section, a bit of a shame, but the color of the water is magical

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Melina
May 15, 2025, Lac de Conflans

This magnificent lake lies at the confluence of the Ain and Valouse rivers. It is located at the foot of the medieval Château de Conflans.

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Bike tour of the lake

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From here, you can see the Lac de Sylans very well, the old ice houses located on its edge, and the view extends to the mountains of the Ain.

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unvara
April 14, 2024, Lac Genin

Viewpoint on Lake Genin.

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Alex Fox
March 3, 2024, Lac de Nantua

Natural jewel, sapphire blue or emerald green waters, nautical activities.

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Frequently Asked Questions

What kind of natural features can I expect to see around the lakes of Nantua?

The lakes around Nantua are nestled amidst diverse natural landscapes. You'll find glacial lakes like Lake Nantua, backed by towering limestone cliffs, and mountain lakes such as Lake Genin, surrounded by alpine fir trees. Many areas, including Lac de Nantua and Lac de Sylans, are designated Sensitive Natural Areas, protecting local flora like wild orchids and fauna such as kingfishers and peregrine falcons. From viewpoints like the View over Lake Nantua, you can appreciate the water's captivating color changes and the surrounding Jura Mountains.

Are there opportunities for water sports and swimming in the Nantua lake region?

Yes, Lake Nantua is a hub for water sports. You can enjoy swimming at supervised bathing areas, canoeing, paddleboarding, sailing, and pedalo boating. Grassy beaches are available at Pré Gadgène in Montréal-la-Cluse and Nantua. However, swimming is generally not permitted in Lac de Sylans, which offers a more tranquil experience.

What hiking and cycling trails are available around the lakes?

Numerous trails cater to hikers and cyclists. Around Lake Nantua, a popular loop is approximately 7 km long, offering panoramic views. For more extensive options, you can explore routes like the 'Panoramic view of the lake – View over Lake Nantua loop' which is a moderate hike. If you're interested in gravel biking, there's a 'Lake Nantua – Lac de Nantua loop' that is more challenging. You can find more hiking options in the Waterfall hikes around Nantua guide or cycling routes in the Gravel biking around Nantua guide.

Are there any historical sites or points of interest near the lakes?

Yes, Lac de Sylans has a unique historical connection. Its banks feature the ruins of former ice factories that operated until 1917, extracting ice from the lake due to its pure, low-mineral content water. Additionally, Lac de Conflans is located at the foot of the medieval Château de Conflans, offering a glimpse into the region's past.

Which lakes are suitable for families with children?

Several lakes in the region are family-friendly. Lake Nantua offers supervised swimming areas and picnic spots. Lake Genin is known for its picnic areas and serene atmosphere, making it a great spot for a family break. Étang de Lalleyriat also has facilities suitable for families.

What is the best time of year to visit the lakes around Nantua?

The lakes offer beauty throughout the year. Summer is ideal for water sports and swimming at Lac de Nantua. The changing colors of Lac de Nantua are particularly striking on sunny days (emerald green) or overcast days (sapphire blue). Spring and autumn provide pleasant temperatures for hiking and cycling, with vibrant foliage or blooming wild orchids. Even winter can be beautiful, especially around Lake Genin, which is nicknamed 'the little Canada of Haut-Bugey'.

Can I go fishing in the lakes near Nantua?

Yes, fishing is a popular activity in the region. Lac de Nantua is known for pike, trout, and whitefish. Lac de Sylans is particularly renowned as a paradise for pike anglers and also has abundant carp and bream. Remember to check local regulations and obtain any necessary permits before fishing.

Are there any quiet or 'hidden gem' lakes to discover?

While Lake Nantua is well-known, Lake Genin is often described as a beautiful hidden lake, offering a perfect getaway. Lac de Sylans also provides a more tranquil and wilder experience compared to Nantua, ideal for those seeking peace and natural beauty away from the crowds.

What do visitors particularly enjoy about the lakes around Nantua?

Visitors appreciate the diverse beauty and recreational opportunities. Many highlight the captivating color changes of Lake Nantua, its dramatic limestone cliffs, and the variety of water sports. Lake Genin is loved for its 'little Canada' feel and as a great spot for a break. The quiet road Along Lake Coiselet is praised for its beautiful landscapes.

Are there viewpoints offering panoramic vistas of the lakes?

Absolutely. The View over Lake Nantua, located 300 meters above the lake, provides an excellent perspective to appreciate the water's colors and the surrounding scenery. There is also a View of Lake Sylans, allowing you to take in the serene beauty of this protected natural area.

What kind of wildlife can be observed around the lakes?

The Sensitive Natural Areas around lakes like Nantua and Sylans are home to diverse wildlife. You might spot wild orchids, rare butterfly species, kingfishers, and peregrine falcons. From viewpoints overlooking Lake Nantua, visitors have reported seeing jays, deer, and various butterflies.

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