River sections of Spain classified according to modified Pfafstetter

Sections of rivers classified in Spain according to the modified Otto Pfafstetter method (Hydrographic Classification). The identification of the network of rivers to be classified and the limitation of spillage basins to the river sections following the Pfafstetter method, has been carried out using as starting data the river network of the cartography 1:25000 (BCN25) and Digital terrain model (MDT) of the IGN. All rivers in map 1:25000 have been classified with the exception of unnamed rivers smaller than 1 km. The classified rivers constitute a unifilar network with connected and complete topological. They are reference information since being classified they allow referencing, locating and analyzing hydrological information, being of particular importance for hydrological analysis. The result of this classification gives rise to a new watershed division, with the following large basins, called Ottobasincas: A1003 North Atlantic; A1004 Duero; A1006 Tagus; A1008 Guadiana; A1009 South Atlantic; M2001 Southern Mediterranean; M20002 Júcar; M2003 Mid-Mediterranean; M2004 Ebro and M2005 Northern Mediterranean; M01 to M08 Balearic Islands; A01 to A11 Canary Islands, M220 Melilla and M221 Ceuta. The methodology applied to obtain this information and its application for the hydrographic classification of rivers in Spain according to the Pfafstetter method has been developed by CEDEX. The detailed information is contained in Monograph M-133 ‘Hydrographic Classification of the Rivers of Spain’ published by the Technical Secretariat-General Publications Centre. Ministry of Public Works.