Lakes near Leuville-Sur-Orge are primarily retention basins within the broader Orge river valley system, offering diverse natural areas for outdoor activities. These water bodies, often created for flood management and material extraction, have evolved into significant ecological sites. The region provides various landscapes, from birdwatching havens to family-friendly recreational spots. These areas are accessible and offer opportunities for walking, cycling, and observing local flora and fauna.
Last updated: July 6, 2026
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Late afternoon bike ride: Magnificent track and path...in dry weather.
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The Carouge basin is the point of convergence of the Orge, Blutin, Salmouille and Boële. The basin was dug in the 1970s to extract materials for road construction, and also to manage the floods of the Orge. Here you can see many species of birds, such as seagulls, cormorants and ringed plovers depending on the season. The path along the basin is safe and flat.
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The Saint-Michel-sur-Orge basin is a peaceful place surrounded by greenery, ideal for a walk or a relaxing break in the heart of nature. Located on the edge of the city, this basin offers a pleasant setting with its shaded banks. The paths that surround it allow you to appreciate the tranquility of the place and observe the local fauna, in particular the birds that come to land on the water.
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After having traveled about twenty kilometers along the barley starting from Morsang sur orge, this lake offered us a magnificent landscape, hidden between the trees. It was difficult to leave this place to come back home!
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This water park is only the culmination of the Ollainville water treatment plant known as the Moulin Neuf, on a former industrial site that had been cleaned up and rehabilitated which had replaced the old mill. The site is next to the Syndicat de l'Orge, de la Rémarde et de la Prédecelle, which does everything in its power to ensure that the paths and routes in the Barley basin are practicable and maintained.
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It is one of the many Orge retention basins between Breuillet (Port Sud basin), Egly (Trévoix mill basin), Brétigny (Petit Paris and Carouge basins) and Longpont-sur-Orge (Parc de Lormoy) and beyond. These pools, very well maintained and offering exceptional flora and fauna, make it possible to make loops of more than twenty kilometers quite easily (as long as one remains in the valley). A set of exotic and relaxing pools.
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A large body of restful and calm water. It is possible to go around on a cycle path.
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The most popular lakes in the area include Carouge Basin, known for its birdlife and flat paths, and Trévoix Pond, which offers a cycle path and exceptional flora and fauna. Visitors also appreciate the peaceful setting of the Saint-Michel-sur-Orge basin.
Yes, several lakes are suitable for families. Étang du Moulin Neuf in Ollainville is a water park with children's playgrounds and pedestrian trails, making it ideal for a family outing. Lac d'Olainville also offers a scenic landscape that families can enjoy.
The lakes are primarily retention basins within the Orge river valley system, offering diverse natural areas. You can expect to see rich birdlife, especially at Carouge Basin, where species like seagulls and cormorants are common. Trévoix Pond boasts a wide variety of flora and fauna, including various bird species and even deer. Many areas feature shaded banks and lush greenery.
The region offers various outdoor activities. You can enjoy cycling on routes like the 'Carouge Basin – Carouge Basin loop from Leuville-sur-Orge' or the 'Trévoix Pond – Château du Marais loop from La Norville - Saint-Germain-lès-Arpajon'. For gravel biking, consider the 'Carouge Basin – Perray Natural Park loop from Arpajon'. You can find more details and routes in the Cycling around Leuville-Sur-Orge and Gravel biking around Leuville-Sur-Orge guides.
Yes, there are numerous paths suitable for walking and hiking. The paths around Carouge Basin are safe and flat, ideal for easy strolls. Trévoix Pond offers wide and well-maintained paths extending for nearly 4 km around the basin. The Saint-Michel-sur-Orge basin also provides pleasant trails for appreciating the tranquility of the area.
The lakes are enjoyable throughout the year, but spring and autumn offer particularly pleasant conditions for walking and observing nature, with milder temperatures and vibrant foliage or blooming flora. Summer is also popular for recreational activities, though it's advisable to check for any cyanobacteria warnings, especially for Carouge Basin.
Near Trévoix Pond (also known as Lac d'Olainville), you can find the ancient 'Pierre Beaumirault,' a Neolithic sandstone block, which adds a historical element to the natural beauty of the site.
Yes, Trévoix Pond (Lac d'Olainville) is accessible by RER C from Egly station, making it convenient for visitors relying on public transportation.
Visitors frequently praise the peaceful and relaxing atmosphere, the well-maintained paths for walking and cycling, and the rich biodiversity, especially the birdwatching opportunities. Many appreciate the scenic landscapes and the accessibility of these natural areas for a quick escape into nature.
While many paths are suitable for walks with dogs, it's important to be aware of local regulations regarding leashes. For Carouge Basin, specifically, it is recommended to keep dogs away from the water when elevated levels of cyanobacteria are detected, as monitored by the Syndicat de l'Orge.
Yes, Trévoix Pond (Lac d'Olainville) is a popular spot for fishermen, offering 13 designated fishing posts. One of these posts is specifically designed to be accessible for people with reduced mobility.


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