This operation was submitted by Electricité de France (Centre’s production unit) with the aim of reconfiguring the Poutès dam. The purpose of this work is to restore sedimentary and fish transparency on the Upper Allier. The Poutès Dam is listed as a priority work in the management plan for amphihalin migratory fish 2014-2019 in the Loire, Sèvre Niortaise and Vendean coastal basins. This operation is submitted under Action 12 of the ERDF Loire Basin POI with the aim of restoring highly migratory fish populations.