Lakes around Égly offer diverse natural beauty and recreational opportunities in the surrounding area. This region features several basins and ponds, many of which are part of the Orge river system, providing environments for walks and wildlife observation. These aquatic sites are ideal for outdoor activities, with some offering well-maintained paths and serene settings. The area's lakes contribute to its natural landscape, providing accessible green spaces.
Last updated: June 23, 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 lakes around Égly offer diverse natural beauty. You'll find serene landscapes hidden among trees, pleasant environments with shaded banks, and areas where several rivers converge. Many of these sites are part of the Orge river system, providing rich habitats for local fauna, especially birds.
Yes, the Carouge Basin is an excellent spot for birdwatching. It's a convergence point for several rivers and is known for diverse bird species like seagulls, cormorants, and ringed plovers, depending on the season. The Saint-Michel-sur-Orge basin also offers opportunities to observe birds that frequent the water.
Absolutely. The Carouge Basin features a safe and flat path along its edge, ideal for walks. Trévoix Pond has a cycle path around its perimeter, making it suitable for both walking and cycling. The Saint-Michel-sur-Orge basin also has surrounding paths for tranquil strolls.
Beyond leisurely walks and birdwatching, the area around Égly's lakes is great for various outdoor activities. You can find numerous hiking trails, including easy loops around ponds like Trévoix Pond and Lac d'Olainville. There are also MTB trails and running routes that incorporate the scenic lake areas.
Yes, several lakes are well-suited for families. Trévoix Pond, Lac d'Olainville, and Étang du Moulin Neuf are all categorized as family-friendly. These locations often feature well-maintained surroundings and accessible paths, making them enjoyable for all ages.
Visitors particularly appreciate the tranquility and natural beauty of these locations. Many find the lakes to be restful and calming, offering a pleasant escape. The well-maintained paths and opportunities to observe local flora and fauna are also frequently highlighted, with some describing the landscapes as magnificent and captivating.
The Carouge Basin is noted for being wheelchair accessible, featuring a safe and flat path along its edge. This makes it a good option for visitors seeking easily navigable routes.
Lac d'Olainville is described as a lake hidden among trees, offering a magnificent landscape and a serene, picturesque setting. It's a spot that visitors find captivating and difficult to leave due to its tranquil beauty.
The Carouge Basin was excavated in the 1970s. Its creation served two main purposes: to extract materials for road construction and to help manage the floods of the Orge river. Today, it's a significant ecological site and a popular spot for nature observation.
The Étang du Moulin Neuf is a water park that was repurposed from a former industrial site. It's the culmination of the Ollainville water treatment plant, which was cleaned up and rehabilitated. While not a natural lake in origin, it now offers a pleasant environment for recreation.
Yes, Trévoix Pond is one of several well-maintained Orge retention basins. These basins offer exceptional flora and fauna and provide opportunities for loops of several kilometers, making them ideal for walks and enjoying nature.
While specific seasonal recommendations are not provided, the pleasant environments with shaded banks and opportunities for observing local fauna suggest that spring, summer, and early autumn would be ideal for enjoying walks and outdoor activities around the lakes.


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