What is on this Floods Directive map? River Basin Districts (RBDs) are the main units for the management of river basins and have been delineated by Member States under Article 3 of the Water Framework Directive (WFD). For the Floods Directive, Member States were given the choice to use either the WFD River Basin Districts, or to designate other Units of Management (UoM) for specific river basins or stretches of coastal areas under article 3 of that Directive. For Ireland and Italy such smaller UoM were designated. For the other EU Member States the same RBD as for the WFD therefore applies. The geographic area of some RBDs span more than one country (such as the Danube) and these are known as International RBDs. These RBDs are shown in yellow/orange. Others are contained completely within a country and are known as National RBDs, and are shown in light purple/light blue.