Paraíba do Sul (Brazil)
Located in the South-East, the Paraíba Do Sul is one of the most significant river basins of Brazil in terms of urban water supply. Water is mostly used for domestic and industrial purposes but also for irrigation and hydropower generation. It is transboundary as it forms part of the states of Minas Gerais, Rio de Janeiro and São Paulo. Although located in a humid tropical and subtropical environment, increasing water demand during the past years and extended dry spells have caused severe water allocation problems.
Scientists claim that large scale deforestation and agroindustry in South America have aggravated the hydrological crisis in the Paraíba do Sul river basin by modifying the regional hydrological cycle and hence shifting precipitation. Being used to sufficient water supply, Brazil suffers from a lack of efficient water management practices. Therefore the affected states are highly vulnerable to hydrological crises. ITT, UFF, AGEVAP and other partner institutions are working on tools and methods to assess drought characteristics on the one hand and develop solutions towards a more sustainable water management.
The “big drought” in the Paraiba do Sul Basin
Adapta Workshop in Rio and Fortaleza, 16 - 22 March, 2017
In the scope of the ADAPTA project (“Adaptive drought risk management as strategy to reduce climate change impacts”) two workshops were held on 16th March in Rio de Janeiro and on 20th - 22nd March, 2017 in Fortaleza. The interdisciplinary ADAPTA project (2016-2018) aims at quantifying drought risks and vulnerability in the tropical Paraíba do Sul and semiarid Jaguaribe river basins and at developing adaptive management strategies to generate resilience against an increasing drought risk in the context of climate change. The project is currently led by the University of Ceará in cooperation with the State University of Rio de Janeiro and ITT (TH Köln).
We presented research results about spatio-temporal drought characteristics, regional climate modelling and modelling the impact of different water allocation scenarios on downstream discharge and reservoir storage in the Paraiba do Sul. Key stakeholders were invited to evaluate the utility of the results and provide future scenario’s related to water demand to be simulated by the calibrated models.
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