LOW COST POTENTIAL INFILTRATION ESTIMATION FOR WET TROPICAL WATERSHEDS FOR TERRITORIAL PLANNING SUPPORT

Authors

  • Franciane Mendonça dos Santos Univ. Estadual Paulista - UNESP Campus de Ilha Solteira
  • José Augusto Lollo Univ. Estadual Paulista - UNESP Campus de Ilha Solteira

DOI:

https://doi.org/10.4090/juee.2016.v10n2.233-241

Keywords:

Potential Infiltration. Surface processes and degradation dynamics. Territorial planning. Ilha Solteira.

Abstract

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 land-use 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.

Downloads

Download data is not yet available.

Author Biographies

Franciane Mendonça dos Santos, Univ. Estadual Paulista - UNESP Campus de Ilha Solteira

Programa de Pós-graduaçao em Engenharia Civil

José Augusto Lollo, Univ. Estadual Paulista - UNESP Campus de Ilha Solteira

Programa de Pós-graduaçao em Engenharia Civil

Downloads

Published

2017-04-28

Issue

Section

Articles