Low cost potential infiltration estimation for wet tropical watersheds for territorial planning support
Nenhuma Miniatura disponível
Data
2016-01-01
Autores
Dos Santos, Franciane Mendonça
Lollo, José Augusto [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
This study was developed at Caçula stream watershed of Ilha Solteira (Brazil) for potential infiltration estimation based on digital cartography. These methods aim at low-cost and quick analysis processes in order to support the territorial planning. The preliminary potential infiltration chart was produced using ArcHydro and pedological information of the study area. The curve-number method (Soil Conservation Service) was used to determine the potential infiltration combining information related to landuse and soil types in the watershed. We also used a methodology that assumes being possible to evaluate potential infiltration of a watershed combining average annual rainfall, land-use and watershed natural attributes (geomorphology, geology and pedology). Results show that ArcHydro is efficient for a preliminary characterization because it shows flow accumulation areas, allowing higher potential of degradation areas in terms of floods, mass movement and erosion. As land-use classes have significant weight in Soil Conservation Service method assessing potential infiltration, this method allow us to evaluate how land-use changes affect water dynamic in the watershed. The propose based on natural environment attributes enables to determine the homologous infiltration areas based on a higher number of natural characteristics of the area, and thereby obtain a result that is closer to the local conditions and, consequently for degradation surface processes identification.
Descrição
Palavras-chave
Potential infiltration, Surface processes and degradation dynamics, São josé dos dourados UGRHI, Territorial planning
Como citar
Journal of Urban and Environmental Engineering, v. 10, n. 2, p. 233-241, 2016.