CANALIZAÇÕES E TRANSFORMAÇÕES HIDROGEOMORFOLÓGICAS: Desafio e Consequências
CANALIZAÇÕES E TRANSFORMAÇÕES HIDROGEOMORFOLÓGICAS: Desafio e Consequências
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DOI: https://doi.org/10.22533/at.ed.6952430089
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Palavras-chave: Contexto Histórico, Canalizações, Belo Horizonte/MG, Uberlândia/MG, Catalão/GO
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Keywords: Historical Context, Channelizations, Belo Horizonte/MG, Uberlândia/MG, Catalão/GO
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Abstract: The channeling of rivers and streams, a common practice in many cities, has significant impacts, especially when done excessively and without control. In Belo Horizonte, for example, approximately 208 kilometers of streams and creeks are channelized or lined, representing a profound intervention in the natural environment. These modifications were prompted by the rapid and disorderly urban growth in the 1960s when the city's infrastructure did not keep pace with population expansion, resulting in serious sanitation issues and recurrent floods. Historically, channeling was seen as a quick solution to control floods and improve urban aesthetics, without considering the long-term environmental consequences. The population supported these measures to mitigate the impacts of floods, which often paralyzed the city and hindered free movement, a right guaranteed by the Brazilian Federal Constitution. However, excessive channeling brought additional problems. Besides irreversibly altering natural watercourses, it reduced the natural absorption capacity of rainwater, exacerbating floods in certain areas. The removal of riparian vegetation and soil sealing also contributed to increased water runoff speeds, intensifying flood peaks. The resistance and indignation of the population, especially from marginalized communities, were disregarded during the expropriation and channeling process of rivers. Criticisms focused on the environmental impact and the loss of natural spaces such as trees and green areas, essential for urban quality of life. The channeling in Belo Horizonte illustrates how well-intentioned urban interventions can have significant adverse impacts, highlighting the need for more balanced and sustainable approaches in managing urban water resources and protecting natural ecosystems.
- Isadora Maria Vital Caldeira
- Kárcia Rangelli de Souza
- Thiago Henrique Coelho Barbosa
- Mayana de Souza Ferreira