Stretches of rivers in Spain classified according to modified Pfafstetter

Sections of rivers classified from Spain according to the modified Otto Pfafstetter method (hydrographic classification). The identification of the network of rivers to be classified and the limitation of river basins to the river sections following the Pfafstetter method, has been carried out using as starting data the river network of cartography 1:25000 (BCN25) and Digital Land Model (MDT) of the IGN. All rivers in cartography 1:25000 have been classified except for those less than 1 km without a name. The classified rivers constitute a unifilar network with connected and complete topological. They are reference information since being classified allow referencing, locating and analysing hydrological information, being of particular importance for hydrological analysis. The result of this classification gives rise to a new hydrographic division, with the following large basins, called Ottocuencas: A1003 North Atlantic; A1004 Duero; A1006 Tajo; A1008 Guadiana; A1009 South Atlantic; M2001 Southern Mediterranean; M20002 Júcar; M2003 Medium 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” edited by the Center for Publications General Technical Secretary. Ministry of Public Works.本数据集包含经改进的奥托·普法夫施泰特（Otto Pfafstetter）水文分类方法划分的西班牙河流河段。 本次分类所需的河网识别，以及依据普法夫施泰特方法将流域范围限定至对应河段的工作，均以1:25000比例尺制图河网（BCN25）以及西班牙国家地理研究所（IGN）的数字地表模型（MDT）作为初始数据完成。本数据集已完成所有1:25000比例尺制图范围内河流的分类，无名称且长度不足1千米的河流除外。 经分类后的河流构成了连通且拓扑完整的单线河网。此类河网具备核心参考价值：通过分类结果可实现水文信息的引用、定位与分析，在水文分析领域具有重要意义。 本次分类结果形成了全新的水文分区，包含以下被称为奥托昆卡斯（Ottocuencas）的大型流域：A1003 北大西洋流域；A1004 杜罗河（Duero）流域；A1006 塔霍河（Tajo）流域；A1008 瓜迪亚纳河（Guadiana）流域；A1009 南大西洋流域；M2001 南地中海流域；M20002 胡卡尔河（Júcar）流域；M2003 中地中海流域；M2004 埃布罗河（Ebro）流域与M2005 北地中海流域；M01至M08 巴利阿里群岛流域；A01至A11 加那利群岛流域，以及M220 梅利利亚流域与M221 休达流域。 本数据集所采用的分类方法，以及其在西班牙河流普法夫施泰特水文分类中的应用，均由CEDEX（西班牙公共工程研究中心）研发。详细信息收录于由西班牙公共工程部总技术秘书局出版中心编撰的专题著作M-133《西班牙河流水文分类》（Hydrographic Classification of the Rivers of Spain）中。