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 (http://ec.europa.eu/environment/water/flood_risk/), 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 the majority of RBDs, EU Member States used the same ones as for the WFD. The geographic area of some RBDs span more than one country (such as the Danube) and these are known as International RBDs. Others (the minority) are contained completely within a country and are known as National RBDs.