A 35 cm thick concrete slab was installed on the main dyke (the one most exposed to burrowing animals and wave action), with a depth ranging from 0.6 m to 2.30 m. The bottom of the concrete slab is 20 cm below the pond bottom , which constitute a guarantee against burrowing animals such as coypus and muskrats.
The shores on each side of the discharge valve were stabilised with pebbles to avoid the filling up of the catchment area and obstruction of the discharge system. Finally, the path leading to the dyke was equipped with a covered geotextile to permit access of vehicles (various maintenance activities or linked to pisciculture) and a concrete staircase was also installed on the dyke to facilitate fisheries.
Works aiming to favour water birds and their nesting but also aiming to favour fish (spawning ground…), were realised in the 2005/2006 winter, taking into account the experience acquired since its creation. The rush bed was fragmented in the western part by the creation of troughs (to increase the contact zones between water and plants), shallow zones were realised close to the centre of the pond and a sector of mudflats was increased to the east.