Areas liable to flooding; SNCZI return periods

Demarcated areas such as floodable areas corresponding to the high probability of flooding (return period 10 years), average (return period of 100 years) and low (return period of 500 years) in the Autonomous Community of Navarre, incorporated into the National System of Cartography of Floods Areas (SNCZI) in accordance with Royal Decree 903/2010. These were drawn up by the Ebro and Cantabrian Hydrographic Confederations with the cooperation of the Autonomous Communities and the coordination of the national flood group and updated in the 2th cycle of implementation of the European Floods Directive. In the case of the Ebro River Basin District, in addition to the return periods required by the legislation (10, 100 and 500 years), the floodable area corresponding to the return period for 50 years is included.