Chapter
Apr 26, 2012
The Impact of Urban Sprawl on Flood Risk Areas
Authors: M. T. L. Barros [email protected], J. L. B. Brandão [email protected], O. F. Silva [email protected], and S. Ono [email protected]Author Affiliations
Publication: Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
Abstract
Since the 70s, the population of the São Paulo Metropolitan area has been growing at very high rates per decade. Due to the lack of urban planning and the illegal occupation of the environmental protection areas (around watercourses and on slopes), the percentage of impervious areas in the Upper Tietê River Basin, the main watercourse in the city, has increased significantly. As a result, flood frequency in the basin has also increased. The impact of impervious soil due to changes in the Soil Conservation Service "Curve Number" (CN) was estimated for a pilot area using Ikonos satellite images to quantify land use classes. A CN map was produced using the overlap between a land use map and a geological map. Then the surface runoff was simulated using the SCS runoff calculation technique.
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Published In
Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
Pages: 1 - 12
Copyright
© 2005 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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M.ASCE
Associate Professor, University of São Paulo, Hydraulic and Sanitary Engineering Department, Av. Prof. Almeida Prado, 271, São Paulo-SP Brazil, 05508-900,. E-mail: [email protected]
Researcher, University of São Paulo, Hydraulic and Sanitary Engineering Department, Av. Prof. Almeida Prado, 271, São Paulo-SP Brazil, 05508-900,. E-mail: [email protected]
Researcher, University of São Paulo, Hydraulic and Sanitary Engineering Department, Av. Prof. Almeida Prado, 271, São Paulo-SP Brazil, 05508-900,. E-mail: [email protected]
Graduate student, University of São Paulo, Hydraulic and Sanitary Engineering Department, Av. Prof. Almeida Prado, 271, São Paulo-SP Brazil, 05508-900,. E-mail: [email protected]
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.