The Sèvre nantaise and the Thouet are tributaries of the River Loire. The Sèvre nantaise flows over 159 kilometres and drains a catchment area of 2,356 km². The Thouet is 159 kilometres long and drains a catchment area of 3,452 km². Both catchments are situated in 2 Regions, pays de la Loire and Poitou charentes in the west of France. Development of a multicriteria tool and approach to develop intervention programmes for river restoration. 300 sites have undergone the participative multicriteria analysis. 3 programmes of opening of gates and lowering of structures have already been conducted.
French Water Agency Loire Bretagne, French National Agency for Water and Aquatic Environments