Peak flow in a catchment with different levels of urbanization in Santarém/PA

Authors

DOI:

https://doi.org/10.6008/CBPC2179-6858.2018.007.0007

Keywords:

Hydrogram of flood, peak flow, surface runoff, soil sealing

Abstract

The effects of urbanization on the increase of the peak flow and surface runoff of the Urumari catchment in Santarém/PA were analyzed. The use of the soil is determinant for the dimensioning of the rainwater drainage network, considering that the more soil sealing areas lead to greater surface flow and peak flow. Thus, three scenarios of use of the soil were simulated: 1960, 2017 and a future scenario. The percentages of waterproofed area of each period were determined through maps generated in GIS environment, satellite images and map adaptation in the DraftSight 2018 software. The necessary parameters for the generation of the flood hydrograms of the three scenarios were determined from the SCS (Soil Conservation Service) method. The results showed that the urbanization process has a significant effect on the peak flows of urban hydrographic basins, which can be clearly seen in the presented hydrograms. In this case, the future scenario, due to greater soil sealing, presented a peak flow 2.24 times greater than the peak flow of the 2017 scenario and 6.80 times greater than those of the 1960 scenario. These results serve as an alert for municipal managers in the planning and control of urban policies in relation to the rainwater drainage network, which should be guided by studies of urban expansion.

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Author Biographies

Luciana Lavareda Rodrigues, Universidade Federal do Oeste do Pará

Estudante de Mestrado do Programa de Pós-Graduação em Processos Construtivos e Saneamento - PPCS/ITEC/UFPA

Claudio José Cavalcante Blanco, Universidade Federal do Pará

Possui graduação em Engenharia Mecânica pela Universidade Federal do Pará (1995), mestrado em Engenharia Mecânica pela Universidade Federal de Santa Catarina (1998) e doutorado em Sciences de l'Eau - Institut National de la Recherche Scientifique - Eau, Terre et Environnement (2005), Québec/Canadá. Coordenador da Cooperação Científica entre o ITEC da UFPA e o INRS-ETE da Universidade do Quebec-Canadá desde 2005. Coordenador do Programa de Pós-Graduação em Engenharia Civil (PPGEC/ITEC/UFPA) entre os anos de 2010 e 2015. É Professor Associado II da Universidade Federal do Pará e desde 2015 é Coordenador do Programa de Pós-Graduação em Engenharia de Recursos Naturais da Amazônia (PRODERNA/ITEC/UFPA). Tem experiência na área de Recursos Hídricos, com ênfase em Hidrologia e Hidráulica Fluvial; na área de energia, tem experiência em projetos de Pequenas Centrais Hidrelétricas (PCHs) e Centrais Hidrocinéticas.

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Published

2018-09-24

Issue

Vol. 9 No. 7 (2018): Revista Ibero-Americana de Ciências Ambientais - Ago, Set 2018

Section

Water Resources

License

The CBPC - Companhia Brasileira de Produção Científica (Brazil CNPJ: 11.221.422/0001-03) the material rights of the published works. The rights relate to the publication of the work anywhere in the world, including rights to renewals, expansions and dissemination of the contribution, as well as other subsidiary rights. All electronically published works may subsequently be published in printed collections under the coordination of this company and / or its partners. The authors preserve the copyright, but are not allowed to publish the contribution in another medium, printed or digital, in Portuguese or in translation.

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