Dynamic systems approach assess and manage water resources in river basins
DOI:
https://doi.org/10.1590/S0103-90162009000400001Keywords:
water stress, water management, watershed, modelingAbstract
The Piracicaba, Capivari and Jundiaí River Basins (RB-PCJ) are located in the States of Minas Gerais and São Paulo, Brazil. By 2005, 5.8% of Brazil's General National Product-GNP was produced there. Such economic development has created a huge demand for water resources. The availability of water resources was assessed by running a dynamic systems simulation model to manage these resources in the RB-PCJ (WRM-PCJ), considering five 50-year simulations. WRM-PCJ was developed as a tool to aid the RB-PCJ Watershed Committee. The model computes water supply, demands, and contamination load from several consumers. When considering a Business-as-Usual scenario, by 2054, water demands will have increased up to 76%, 39% of the available water will come from wastewater reuse, and the contamination load will have increased by 91%. The Falkenmark Index started at 1403 m³ person-1 year-1 in 2004, ending at 734 m³ P-1 yr-1 in 2054; the Xu Sustainability Index started at 0.44 and ended at 0.20; and Keller's River Basin Development Phases started as Phase II, and ended at final Phase III, of Augmentation. The three criteria used to evaluate water resources showed that RB-PCJ is at a crucial management turning point. The WRM-PCJ performed well, and proved to be an excellent tool to assess water resources availability.Downloads
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Published
2009-08-01
Issue
Section
Agricultural Engeneering
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All content of the journal, except where identified, is licensed under a Creative Common attribution-type BY-NC.How to Cite
Dynamic systems approach assess and manage water resources in river basins . (2009). Scientia Agricola, 66(4), 427-435. https://doi.org/10.1590/S0103-90162009000400001