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Oise

Le Mesnil-En-Thelle

Top 8 Lakes around Le Mesnil-En-Thelle

Best lakes around Le Mesnil-En-Thelle are primarily found within the Oise department, offering various natural settings. While Le Mesnil-En-Thelle itself does not feature large natural lakes, several accessible "étangs" provide recreational opportunities. These areas are characterized by diverse landscapes, including forests and former quarries, with paths suitable for walking and cycling. The region's lakes contribute to its natural appeal, providing spots for observation and outdoor activities.

Best lakes around Le Mesnil-En-Thelle

  • The most popular lakes is Le Petit Étang de Carnelle, a lake located in the heart of the forest of old marl quarries. This artificial pond, with an area of 1.3 hectares, is a peaceful place for running a loop and observing fishermen.
  • Another must-see spot is The Blue Lake of Carnelle, a forest area featuring one of two bodies of water in the Carnelle forest. Its name reflects its deep blue color, originating from the gypsum and marl rock at its bottom, and it is surrounded by oaks, beeches, and chestnut trees.
  • Visitors also love Royaumont Abbey, a historical site with parks and a lake around it. The abbey's surroundings offer a refreshing sight and are open to the public for visits.
  • Le Mesnil-En-Thelle is known for artificial ponds, natural lakes within forests, and historical sites with adjacent water bodies. The area offers a variety of lakes to see and explore, from tranquil fishing spots to scenic walking routes.
  • The lakes around Le Mesnil-En-Thelle are appreciated by the komoot community, with over 150 upvotes and 15 photos shared by visitors.

Last updated: June 24, 2026

Royaumont Abbey

Highlight • Historical Site

The abbey is open to the public. Entrance fee for a very interesting visit to this beautiful place steeped in history...

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The Blue Lake of Carnelle

Highlight • Forest

Lac Bleu is one of the two bodies of water in the Carnelle forest. On sunny days, its name takes on its full meaning. But there is another reason for the name of this lake from ancient quarries. The rock at the bottom is a mixture of gypsum and marl. The color is changing due to algae, but originally it is deep blue. Around the lake, one can appreciate oaks, beeches and chestnuts. A feast for the eye!

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Le Petit Étang de Carnelle

Highlight • Lake

The Petit Étang de Carnelle is located in the heart of the forest of old marl quarries. With an area of 1.3 hectares and a depth of 20 meters, this pond is artificial. It is a peaceful place, ideal for running a loop and watching the fishermen settle in peace. Certain points of view allow you to better appreciate the density of the forest.

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Étangs de Toutevoie

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The Toutvoie ponds are a peaceful, pleasant and friendly place. There are barbecue facilities as well as very nice paths for walking. Fishing and swimming are prohibited!

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Étang des Trois Sources

Highlight • Lake

The Trois Sources pond is a beautiful place built on a former quarry which breathes nature and where you can observe many birds, moorhens, swans, ducks and barnacle geese.

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Tips from the Community

Georgy Pichery
March 20, 2026, Abbaye de Royaumont

A place to recharge your batteries

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What is to be remembered from this route is the passage through the Carnelle forest. However, there are too many roads on the Isle Adam and along the Oise. No particular difficulty.

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Vince
September 15, 2024, Étang des Trois Sources

The Trois Sources pond is a beautiful place built on a former quarry which breathes nature and where you can observe many birds, moorhens, swans, ducks and barnacle geese.

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Very beautiful abbey. I recommend the tour and the restaurant which is incredible.

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pretty lake hidden in the middle of the forest

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There are places to park bicycles in the car park.

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Thierry
November 12, 2022, Étangs de Toutevoie

a small walk full of charm, beautiful encounter with not shy horses! Gunshot in the forest of Gouvieux. Same shooting range. Anyway pond, very passable path. To do again!

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Frequently Asked Questions

What are some of the best lakes to explore near Le Mesnil-En-Thelle?

The region offers several picturesque lakes. Among the most notable are the Le Petit Étang de Carnelle, known for its peaceful setting and fishing opportunities, and The Blue Lake of Carnelle, famous for its distinctive deep blue color. The Étangs de Comelles, located within the Chantilly forest, are also highly recommended for their natural beauty and historical significance.

Are there good walking or hiking trails around the lakes near Le Mesnil-En-Thelle?

Yes, many lakes offer pleasant walking opportunities. The Étangs de Comelles feature shaded footpaths and are ideal for walks, cycling, or horse-riding. Similarly, the Étangs de Toutevoie provide accessible paths suitable for walks. Étang de Saint-Félix has a marked trail approximately 3 km long circling the pond. For more extensive options, you can explore running trails around Le Mesnil-En-Thelle that often pass by or near these natural areas.

Can I go cycling or mountain biking near the lakes?

Absolutely. The Étangs de Comelles are popular for cycling, and the Étangs de Toutevoie even have mountain biking trails with small jumps made from logs for enthusiasts. You can find various gravel biking routes and road cycling routes in the wider Le Mesnil-En-Thelle area that incorporate scenic lake views.

Are there family-friendly lakes or activities for children?

Many lakes are suitable for families. The Étangs de Toutevoie offer accessible paths for strollers and wheelchairs, along with picnic facilities. The Étangs de Comelles also have picnic areas and are great for nature observation. The Blue Lake of Carnelle and Le Petit Étang de Carnelle are also considered family-friendly spots within the forest.

Is fishing permitted in any of the lakes near Le Mesnil-En-Thelle?

Fishing is permitted in some locations. Le Petit Étang de Carnelle is a peaceful spot where you can observe fishermen. At Étang de Saint-Félix, fishing is allowed in the communal pond on Rue de Heilles, with annual pontoon rental options available. However, fishing is prohibited in the Étangs de Toutevoie.

What kind of wildlife can I expect to see around the lakes?

The lakes are rich in biodiversity. At Étangs de Comelles, you can observe various birds and rare plants, and in March, thousands of frogs and toads come to mate. The Étang des Trois Sources is known for many birds, including moorhens, swans, ducks, and barnacle geese. At Étangs de Toutevoie, you might spot ducks, coots, and coypus.

Are there any historical sites associated with the lakes?

Yes, the Étangs de Comelles have a rich history, having been created by monks in the 13th century as fish ponds. They are also overlooked by the charming Château de la Reine Blanche. Additionally, Royaumont Abbey, a significant historical site, features parks and a lake around it, offering a refreshing sight for visitors.

Is swimming allowed in any of the lakes?

Public swimming is generally not permitted in these lakes for safety and environmental reasons. For example, swimming is prohibited in Le Petit Étang de Carnelle, the Étangs de Toutevoie, and Étang de Saint-Félix.

What is the best time to visit the lakes near Le Mesnil-En-Thelle?

The lakes are beautiful year-round, but spring and autumn offer particularly pleasant conditions for walking and cycling, with milder temperatures and vibrant natural colors. March is a unique time to visit the Étangs de Comelles to witness the frog and toad mating season, though some roads may be temporarily closed at night.

Are there amenities like cafes or picnic areas near the lakes?

Yes, some lakes offer amenities. The Étangs de Comelles have picnic areas and a crêperie, 'l'Étang d'Art,' for a gourmet break. The Étangs de Toutevoie also provide barbecue facilities and benches for relaxation. Étang de Saint-Félix includes a picnic area.

How far are the Étangs de Comelles from Le Mesnil-En-Thelle?

The Étangs de Comelles are located within the Chantilly forest, with an estimated driving distance of approximately 20 minutes from Le Mesnil-En-Thelle. You can find more information about this natural site on the Parc Oise-Pays de France website.

What makes The Blue Lake of Carnelle unique?

The Blue Lake of Carnelle stands out due to its striking deep blue color, which comes from the gypsum and marl rock at its bottom. Surrounded by ancient oaks, beeches, and chestnut trees, it offers a visually captivating experience, especially on sunny days.

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Still not found your perfect lake around Le Mesnil-En-Thelle? Check out the guides of these regions to see even more beautiful places.

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