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O presente trabalho demonstra a capacidade potencial de armazenamento de agua da bacia hidrografica do rio Pequeno, Sao Jose dos Pinhais, PR, que e uma regiao de crescente expansao urbana e industrial da Regiao Metropolitana de Curitiba. Com a analise da capacidade potencial de armazenamento de agua da bacia hidrografica, podem ser identificadas areas com maior ou menor capacidade de recarga de aquiferos, auxiliando, dessa maneira, na implementacao de politicas de desenvolvimento socioeconomicas. Para tanto, foi aplicada a metodologia de avaliacao da capacidade potencial de armazenamento de agua proposta por Chiaranda (2002), que consiste na analise e cruzamento, em ambiente de Sistemas de Informacoes Geograficas (SIG), de informacoes tematicas como geologia, geomorfologia, solo, cobertura vegetal original e usos dos solos nos anos de 1986, 1996 e 2007. No ano de 1986, a bacia apresentou 79,39; 49,38 e 1,68%, e em 2007 a bacia apresentou 74,10; 47,73 e 8,62% de sua area enquadrada nas classes de alta, media e baixa capacidade de armazenamento, respectivamente. Verificou-se que os usos da terra modificaram as caracteristicas da capacidade potencial de armazenamento da bacia do rio Pequeno. Palavras-chave : Recursos hidricos; capacidade de armazenamento; hidrologia florestal. Abstract Evaluation of potential water storage capacity in the Rio Pequeno watershed, Sao Jose dos Pinhais, PR . This work demonstrates the potential water storage capacity of Rio Pequeno watershed, located in the municipality of Sao Jose dos Pinhais, in Parana State, Brazil. The city is part of Curitiba Metropolitan Area and presents high urban and industrial development.The analysis of the Rio Pequeno watershed potential water storage capacity can identify areas of aquifers with higher or lower capacity to recharge, due to implementation of socioeconomic development policies. In order to that, it was applied the methodology of assessment of potential water storage capacity proposed by Chiaranda (2002). It consists in a Geographical Information System (GIS) analysis combined to different sources of information, such as geology, soil type, original plant cover and land uses. The methodology was applied to the years of 1986, 1996, and 2007. In 1986 the basin presented 79.39, 49.38, and 1.68%, in 2007 the basin presented 74.10, 47.73, and 8.62% of its framed area in classes of high, medium and low storage capacity, respectively. According to that, it was observed that land uses have changed the characteristics of potential water storage capacity of Rio Pequeno watershed. Keywords : Water resources; storage capacity; forest hydrology.

AVALIAÇÃO DA CAPACIDADE POTENCIAL DE ARMAZENAMENTO DE ÁGUA NA BACIA HIDROGRÁFICA DO RIO PEQUENO, SÃO JOSÉ DOS PINHAIS, PR