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France's Roubaix Creek Undergoing Transition from an Ope...

France's Roubaix Creek Undergoing Transition from an Open Sewer to Bioswale

The Trichon Construction Site, in Roubaix, France–along Roubaix Creek–began on January 4, 2016. Ten months of work and six million euros ($6.7 Million) will be needed to complete this project. The goal is twofold: 1) To defend against flooding, and 2) To transform the area from an industrial wasteland to an attractive economic zone. So long awaited by

Trichon Construction Site in Lille, Roubaix, France

The Trichon Construction Site, in Roubaix, France--along Roubaix Creek--began on January 4, 2016. Ten months of work and six million euros ($6.7 Million) will be needed to complete this project. The goal is twofold: 1) To defend against flooding, and 2) To transform the area from an industrial wasteland to an attractive economic zone.

So long awaited by residents, construction on the Trichon Site, along the Sartel Riverside, has finally begun. This small creek has, over time, become an open sewer and is now going to be restored; three meter (9.8 feet) in diameter sewer lines will be installed under the canal. To meet this challenge, the construction site first needed to drain 70 meters (230 feet) of the Roubaix Canal. A concrete slab will be placed ten meters (33 feet) deep below street level. Five connecting chambers will also be built, making this operation--unprecedented in Europe--the largest urban pipe-laying construction site.

Trichon Construction Site Lille, Roubaix, France

Once filled, the Trichon will become a swale that will facilitate water purification. On the left bank, a pond by the old distillery will also be cleaned. This site’s development will take place at the same time as the renovation of the Socochim Wasteland and the construction of the neighboring new OVH Corporate Campus.

With the establishment of a large capacity sewage system, the Metropolitan Area of Lille will be protected against large floods in the Sartel area, as well as in the villages around Roubaix and Wattrelos (like those in August 2000, July 2005, and May 2009). This operation is part of a larger plan covering the entire Roubaix territory and its watershed points. The overall coverage and the calibration of the Espierre Canal are also being considered. They are planned to collect runoff from rainfall near the Wattrelos-Grimonpont treatment plant. The Trichon Construction Site is therefore the beginning of a much longer-term operation.

Are there any environmental sores in your city that need to be addressed? What is your city’s approach to flood control? What areas in your city are most susceptible to flooding? Share your thoughts and your city's stories in the comments area below.

Original article, originally published in French here.

Credits: Data and images linked to sources.

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Carmen Phillips is a graduate of Oberlin College and is currently pursuing her masters in French Translation at Kent State University. Carmen spent the last year in Lyon, France teaching English to primary school children and had the opportunity to i...

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