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France
Hauts-De-France
Lille

Willems

Top 4 Lakes around Willems

Lakes around Willems, France, are primarily found in the broader Nord department, as the commune itself does not contain natural lakes. While the "Base de loisirs des 6 Bonniers" in Willems is a natural site, its aquatic activities are currently closed due to safety and water quality concerns. The region offers various recreational water bodies, providing opportunities for nature observation, walking, and water sports. These lakes are often part of nature reserves or leisure bases, featuring diverse landscapes and wildlife.

Last updated: June 20, 2026

Heron Lake

Highlight • Lake

Avoid riding there on weekends or when the weather is nice, there are people walking there!

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Leers Filtration Ponds

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A corner designed for water filtration which makes it a beautiful natural space.

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The Taintignies-Willemau water buffer basin ("Zone d'Immersion Temporaire" or "ZIT") was created in the middle of agricultural land to capture excess water from the fields, preventing it from reaching residential …

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The Fretin Marshes

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A nice walk around the marsh for bird watching

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Observatiehut Péronne

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A picturesque place from where you can observe nature and birds.

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Pierre Granjon
June 18, 2026, Les Marais de Fretin

Very nice spot for quiet walks with the wooden footbridges. Be careful not to go too fast, it can get quite crowded

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The Taintignies-Willemau water buffer basin ("Zone d'Immersion Temporaire" or "ZIT") was created in the middle of agricultural land to capture excess water from the fields, preventing it from reaching residential areas and causing flooding. The entire area is designed as a beautiful experience zone. While the boardwalks invite you to cross the water, that's clearly not the intention: a very clear prohibition sign is posted (at least during my visit, on frosty days). The dikes and grasslands are managed by sheep. In the long term, this area will undoubtedly develop into a fascinating habitat for (water) birds.

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DirkWi
December 31, 2025, Leers Filtration Ponds

The filter ponds in Leers were built to supply water to the Roubaix Canal, which is located nearby. Their primary function is to purify some of the water from the Grimonpont wastewater treatment plant. This plant initially filters 75% of the water; the ponds then process the remaining 25%. This final filtration takes seven days. During this process, the water flows through several ponds, moving from one to the other by gravity. This filtration technique is called phytoremediation: the water is naturally purified by algae, plants, and microorganisms that thrive in these ponds. In Leers, plants such as yellow iris and purple loosestrife, among others, play this purifying role. After seven days of filtration, the water flows into a final 9,000 m² basin. At this stage, it is perfectly purified and of very high quality. This final basin, known as the "storage basin," is the final step before the water is conveyed to the canal. The Leers filter ponds, formerly a landfill, are now a peaceful 5-hectare nature reserve, perfect for a relaxing walk, alone or with the family. The area is home to around thirty bird species, including the coot, the Mediterranean gull, and the reed bunting. If you look closely, you might even be lucky enough to spot a smooth newt swimming in the ponds, searching for small invertebrates to feed on. To protect the environment and wildlife, dogs must be kept on a leash on the paths and are not permitted in the winding sections of the ponds. Source: enm.lillemetropole.fr

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Franck
January 1, 2025, Lac du Héron

A must-see in the region

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Deki Fourcin
November 14, 2024, Lac du Héron

A beautiful place to run between lake and forest. It is a haven of peace in the middle of the Lille metropolis.

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calm

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Beautiful nature and fun to cycle

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there was so much water that I considered trading in my hiking boots for a pair of fins

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Frequently Asked Questions

What types of lakes and water bodies can I explore near Willems?

While natural lakes are not directly within Willems, the broader Nord department offers a variety of recreational water bodies. You'll find nature reserves like Heron Lake, which is a haven for diverse flora and fauna, as well as unique sites such as the Leers Filtration Ponds, which have become natural spaces for wildlife observation. The region features areas for nature observation, walking, and various water sports.

Are there good places for nature observation and birdwatching around Willems?

Yes, the area is excellent for nature enthusiasts. Heron Lake, a 110-hectare nature reserve, is home to over 200 bird species. Additionally, Observatiehut Péronne offers a picturesque spot to observe nature and birds in a calm setting. The Leers Filtration Ponds are also a 5-hectare nature reserve, attracting around 30 bird species.

What are the best lakes for walking or hiking near Willems?

Many lakes in the region offer pleasant walking paths. Heron Lake has well-maintained paths suitable for walking. The Leers Filtration Ponds provide a relaxing walk through a natural space. For more extensive routes, you can explore the trails around these water bodies, which are often part of larger walking networks.

Are there family-friendly lakes or activities available?

Several locations are suitable for families. Heron Lake and Leers Filtration Ponds are both categorized as family-friendly, offering easy walks and opportunities for nature observation. Les Prés du Hem in Armentières, while not a highlight in this guide, is a leisure base known for supervised swimming, pedal boating, and kayaking, making it ideal for family outings.

Can I find trails for cycling or running near the lakes?

Yes, the area around Willems offers various routes for outdoor activities. You can find numerous trails for cycling and running that pass by or near these water bodies. For specific routes, check out the Running Trails around Willems and Cycling around Willems guides, which include options like the 'Boucle des Bonniers Trail' or routes along greenways.

What is the best time of year to visit the lakes around Willems?

The lakes are generally enjoyable throughout the warmer months, from spring to early autumn, when the weather is pleasant for walking, cycling, and nature observation. During these times, the flora and fauna are most active. Some visitors note that weekends and sunny days can be crowded, so consider visiting during off-peak hours for a quieter experience.

Are dogs allowed at the lakes near Willems?

Rules regarding dogs can vary by location. For example, at the Leers Filtration Ponds, dogs must be kept on a leash on the paths and are not permitted in the winding sections of the ponds to protect the environment and wildlife. Always look for signage or check local regulations before bringing your dog.

Are there any unique or lesser-known water bodies worth visiting?

Beyond the well-known spots, the region also features interesting man-made water bodies that have become natural spaces. The Water buffer basin (temporary immersion zone) of Taintignies-Willemau, for instance, was created to manage excess water and is developing into a fascinating habitat for birds, managed by sheep.

What kind of wildlife can I expect to see at these lakes?

The lakes and surrounding nature reserves are rich in wildlife, particularly birds. Heron Lake is known for over 200 bird species. At the Leers Filtration Ponds, you might spot coots, Mediterranean gulls, reed buntings, and even smooth newts. Goriaux Pond, a national biological reserve, also offers opportunities for observing wildlife in a unique landscape.

Are there any facilities like parking or viewpoints at the lakes?

Many of the popular lake areas, such as Heron Park (which encompasses Heron Lake), offer parking facilities. Viewpoints are also common, with Observatiehut Péronne being a dedicated observation hut. It's advisable to check specific location details for amenities before your visit.

Can I swim in any of the lakes near Willems?

While the 'Base de loisirs des 6 Bonniers' in Willems itself has had its aquatic activities closed due to safety and water quality concerns, other options exist in the broader Nord department. Les Prés du Hem in Armentières offers supervised swimming. Always check current local regulations and water quality advisories before attempting to swim in any natural body of water.

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