摘要：Flood is one of the most frequent natural disaster in Brazil. The watercourses classication in the watershed's drainage system is one of the resources of the Hydrological Intelligence - essential to natural disasters monitoring and early warning. Exclusively based on free les and softwares, it is presented a set of procedures for Strahler classication of a hydrography, with results presented for rivers with meaningful history and risk of natural disasters: Itaja, Paraiba do Sul and Doce. The results presentation, with possibilities for education in natural disasters, is done on a free Geographical Information System (QuantumGIS) and on an innovative platform (SALVAR-Cemaden), which is aimed to the natural disasters monitoring and early warning.
其他摘要：Flood is one of the most frequent natural disaster in Brazil. The watercourses classication in the watershed's drainage system is one of the resources of the Hydrological Intelligence - essential to natural disasters monitoring and early warning. Exclusively based on free les and softwares, it is presented a set of procedures for Strahler classication of a hydrography, with results presented for rivers with meaningful history and risk of natural disasters: Itaja, Paraiba do Sul and Doce. The results presentation, with possibilities for education in natural disasters, is done on a free Geographical Information System (QuantumGIS) and on an innovative platform (SALVAR-Cemaden), which is aimed to the natural disasters monitoring and early warning.
关键词：Natural disasters;Education;Watershed;Naturais;Educação;Bacia hidrográfica;Banco de dados
