Flood zones. Preferential flow zones, other studies by the Government of Navarra

Areas delimited as Preferred Flow Zone in accordance with the provisions of Article 9 of Royal Decree 849/1986, of 11 April, approving the Regulation of the Hydraulic Public Domain, corresponding to the scope of the Autonomous Community of Navarre, belonging to studies carried out by the Government of Navarre prior to the establishment of the National System of Cartography of Unfloodable Areas (SNCZI) or not currently included in it. This area consists of the union of the zone or areas where the flow is concentrated preferably during the avenues, or via of intense drainage, and of the area where, for the avenue of 100 years of return period, serious damage can occur to people and property, being delimited its outer limit by the envelope of both areas.