Located near the city of Niort and also known as the “Green Venice”, the riverbanks of the Sèvre are subject to erosion caused by the leasure traffic on the river and the influence of the tide downstream.
Under these conditions, the local administration (IIBSN) responsible for managing the wetland and its maintenance, must meet a dual challenge: restore the riverbanks in order to pursue the activities in the marshlands while taking into account the environment’s richness and its fragility.
THE ENKA SOLUTION
Since 2000, IIBSN has developed and implemented a restoration technique combining vegetation andEnkaMat A20 in the middle tidal zone.
This technique allows the reconstruction of a stable berm embankment footing respecting the original profile and offering space for plantation with native helophytes.
The total length of the restoration is now about 8,500 m and shows particularly good results.
INSTALLATION BENEFITS & RESULTS
EnkaMat A20 offers the following benefits:
- Exceptional durability and resistance to hydraulic erosion
- High permeability that promotes water exchange with the riverbank
- Promotes a rapid revegetation with rhizomes or helophytes plants
- Protects the riverbank against burrowing and pests
- Environmental friendly proven by a site survey in August 2014 to meet regulatory requirements on water and aquatic environments.
EnkaMat A20 is used to full satisfaction since 2000 by offering a well balanced solution respecting the priorities as they were set by the local administration for the restoration of this vulnerable wetland.