Best lakes around Beaumont-Sur-Oise are characterized by a mix of natural and man-made water bodies, often resulting from historical quarrying activities. The region, situated near the Oise river, offers diverse aquatic environments. These range from deep, clear lakes used for specialized activities like scuba diving to shallower ponds ideal for nature observation and fishing. The landscape around Beaumont-Sur-Oise features forests and green spaces, providing settings for various outdoor pursuits centered around these water features.
Last updated: October 11, 2026
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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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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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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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The region offers diverse activities. For a truly unique experience, the Lac de Beaumont (also known as Lac des Ciments) is a federal scuba diving base, offering clear waters and depths up to 30 meters for exploration and training. For more relaxed activities, lakes like Le Petit Étang de Carnelle are popular for walking loops and observing fishermen.
Yes, several lakes are family-friendly. Le Petit Étang de Carnelle and The Blue Lake of Carnelle, both in the Carnelle forest, are great for walks and nature observation. The Étangs de Toutevoie also offer peaceful paths for walking, and some even have barbecue facilities.
The Étangs de la Garenne, located in nearby L'Isle-Adam, are known for abundant wildlife, including ducks, swans, and grebes, making them ideal for nature observation. Étang des Trois Sources, built on a former quarry, is also a beautiful spot to observe many birds like moorhens, swans, and ducks.
Absolutely. Royaumont Abbey is a significant historical site with surrounding parks and a lake. The abbey is open to the public for visits, offering a blend of history and natural beauty.
Beyond walking around the lakes, the region offers various outdoor activities. You can find excellent gravel biking routes, such as the 'Banks of the Oise River' loops, or explore MTB trails like 'The Commelle ponds loop'. For road cycling, there are routes like 'Royaumont Abbey Stream' that pass by scenic areas. You can find more details on these activities in the Gravel biking around Beaumont-Sur-Oise, MTB Trails around Beaumont-Sur-Oise, and Road Cycling Routes around Beaumont-Sur-Oise guides.
Yes, fishing is a popular activity at several lakes. The Étangs de la Garenne are known for fishing opportunities, and Le Petit Étang de Carnelle is a peaceful spot where you can observe fishermen. The Plan d'eau des Sablons is also appreciated by fishermen.
Swimming is generally prohibited in many of the lakes for safety reasons, especially in former quarry sites like Le Petit Étang de Carnelle and Étangs de Toutevoie. The Lac de Beaumont is primarily for scuba diving, not general swimming. Always check local regulations before entering the water.
The lakes offer beauty year-round. For vibrant colors, consider autumn when the surrounding forests, like those around The Blue Lake of Carnelle, display their full splendor. Spring and summer are ideal for enjoying lush greenery and warmer weather for outdoor activities.
While specific accessibility information for each lake can vary, many of the paths around the more developed lakes and ponds, especially those in parks or managed areas, tend to be flatter and more accessible. It's always recommended to check specific site details or contact local tourism offices for the most up-to-date accessibility information.
The Étangs de la Garenne, known for their wildlife and fishing, are located in the Garenne district of L'Isle-Adam. You can find more information about these ponds and their offerings on the Val d'Oise Tourism website: valdoise-tourisme.com.
The Blue Lake of Carnelle stands out for its distinctive deep blue color. This hue is attributed to the gypsum and marl rock at its bottom, a remnant of its origin as an ancient quarry. It's a beautiful sight, especially on sunny days, surrounded by oaks, beeches, and chestnut trees.
Many natural areas and forest trails around the lakes are generally dog-friendly, especially if kept on a leash. However, specific regulations can vary by location, particularly in managed parks or nature reserves. It's advisable to look for signage or check local guidelines for each specific lake you plan to visit.


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