Best lakes around Trept are found within the broader Isère department and the Auvergne-Rhône-Alpes region. Trept, a commune in southeastern France, is situated near a landscape that offers various natural water bodies. These lakes provide opportunities for recreation and scenic enjoyment. Many are accessible and feature amenities for visitors.
Last updated: June 22, 2026
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Lovely view of the pond. A little cool spot when it's hot.
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Very pretty view of the Moras pond
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Very beautiful view of Lake Moras. Picnic table nearby.
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Optevoz has been occupied since the Bronze Age. In the 19th century, limestone mining and agriculture were the main activities. At this time, the village became a place of stay for many painters seduced by the light and the landscapes (in particular the Vanne d'Optevoz represented in numerous paintings). Source: Optevoz website
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Rosière Pond NATURAL HERITAGE Rosière Pond BACK TO THE LIST Rosière Pond© Martial-Couderette The Rosière pond is located to the north-east of the town of Bourgoin-Jallieu on the edge of the town of Ruy-Montceau and offers an ideal relaxing setting. The association “Les Amis de Rosière et de la Nature” manages the pond made available by the city. The Rosière pond, fed by the Loudon stream, was built in the 18th century to power a hemp mill (the current restaurant). This pond was the property of the GENIN family for a long time before being bought by the town of Bourgoin-Jallieu in 1978. Since then, the town of Bourgoin-Jallieu has done everything possible to make this site a protected natural place, walks and hikes and a fishing spot. Many hiking trails start from the pond. Source: Isère Tourism
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left a little too late to see the sunrise on the heights of Plan Bourgoin
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Departure accompanied by the crowing of the rooster, a small bump with a panoramic view, very pleasant passages in the undergrowth, and as a bonus some noises from an omnipresent fauna! 👍 The best for a guaranteed change of scenery and not very far...
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The pond of Chalignieu was recently classified ENS (Sensitive Natural Space). The site is home to many migrating passerines. At the confluence of many paths, it is also a place of walk appreciated by the inhabitants of the surroundings.
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Visitors to the region particularly enjoy Étang de la Rosière, a protected natural site perfect for walks and fishing. Another popular spot is Étang de Chalignieu, known for its migrating birds and pleasant walking paths. These lakes, along with others in the area, have garnered 55 upvotes and 8 photos from the komoot community.
For breathtaking natural beauty, Lake Paladru stands out with its mesmerizing azure waters, nestled between the Chartreuse Mountains and the Valdaine. It's France's fifth-largest natural lake, offering a serene environment for relaxation. The Lakes of Laffrey, relics of the Ice Age, also provide a refreshing escape with their sapphire waters and stunning mountain backdrops.
Yes, several lakes in the vicinity are great for families. Étang de la Rosière and Étang de Chalignieu are both classified as family-friendly and offer easy walks. Grand Lac de Laffrey features pebble beaches and a playground, while Lac de Pétichet also has pebble beaches and a children's playground, making them ideal for family outings.
The lakes around Trept are rich in wildlife. Étang de Chalignieu, classified as a Sensitive Natural Space, is particularly known for being home to many migrating passerines. The area around the Washhouse, Pond and Oak Forest also offers opportunities to hear and observe diverse fauna.
Yes, the region offers historical insights. Étang de la Rosière was built in the 18th century to power a hemp mill. La Tuille Pond in Optevoz is near a village occupied since the Bronze Age, which historically attracted many painters. Grand Lac de Laffrey is historically significant as it lies along the Route Napoléon, marking a famous spot where Napoleon persuaded royal troops to join him in 1815.
The lakes and surrounding areas offer a variety of outdoor activities. You can enjoy walks and hikes around Étang de la Rosière and Étang de Chalignieu. For watersports, Lake Monteynard is a hotspot for kitesurfing and windsurfing due to its excellent wind conditions. The broader region also provides numerous cycling routes and hiking paths, including those found in the Matheysine area near Lake Sautet. You can find more detailed routes for gravel biking, running, and MTB around Trept on the respective komoot guides, such as Gravel biking around Trept, Running Trails around Trept, and MTB Trails around Trept.
Yes, several lakes are suitable for swimming and watersports. Lake Paladru is known for its crystal-clear waters, perfect for a refreshing swim. Grand Lac de Laffrey offers rentals for paddleboards, windsurfing, and canoes. Lake Monteynard is particularly popular for kitesurfing and windsurfing due to its favorable wind conditions.
For scenic views, the View of the Étang de Moras is highly recommended and includes a nearby picnic table. The Washhouse, Pond and Oak Forest also offers pleasant passages and panoramic views. Many lakes, like Grand Lac de Laffrey and Lac de Pétichet, feature pebble beaches that are great for relaxing and picnicking.
The lakes are generally enjoyable throughout the warmer months for swimming and watersports. The Lakes of Laffrey, for instance, offer a refreshing escape, especially when the Grenoble valley experiences high temperatures. For walks and enjoying nature, spring and autumn provide pleasant weather and beautiful scenery. Some lakes also offer serene experiences for winter walks.
Yes, you can find dining options near some of the larger lakes. Grand Lac de Laffrey has restaurants serving local lake fish. Lac de Pétichet also features a restaurant, providing convenient options for visitors.
For a more secluded experience, Lac Mort, one of the Lakes of Laffrey, offers a serene walking circuit away from the crowds. The general environment of Lake Paladru is also known for its tranquility and slower pace of life, making it ideal for relaxation.
Yes, Étang de la Rosière is a designated fishing spot, making it a good option for those looking to enjoy some angling.


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