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The Itupararanga dam has a risk category classified as low, proving to be a safe structure to the assessment criteria of the scope of the Federal Law, its physical characteristics correspond to a minority of the dams that historically suffered collapse, however, due to the volume of its reservoir and the particularities existing downstream such as population density in the municipalities of Votorantim and Sorocaba, the dam has potential associated damage classified as high, corresponding to the impacts caused by its hypothetical breakage reach large proportions.
Studies reveal the phenomenon called overtopping as one of the main causes of the accidents. By the data of the peak flows reached by literary collapse, the size and geometry of the generated gap was estimated.
The flood spot was simulated and generated by computer programs with the help of software developed and made available by the U.S. Army's Engineering Corps. To this end, the data were based on parameters of the digital model of the terrain and geoprocessing, with the aim of getting as close as possible to real conditions.
By analyzing the affected sites, the best points for medical care and assistance to the victims are identified, since some hospitals would be isolated, that is, inaccessible. In this way, places are suggested for this type of care and temporary shelters for residents in the impacted areas.
The study answers to an urban legend that if Itupararanga broke, its waters would cover the tower of Sorocaba Cathedral, more than that, it reveals the importance of the brief warning of the detected threat, because the estimated number of victims is related to the time these people took to get to know and go to the places identified as safe, undoubtedly contributing to the preservation of human lives.
Acknowledgements: To all those directly and indirectly involved during the journey, especially to my co-supervisor Forest Engineer Danilo Ribeiro da Costa and Profa. Ma. Architect & Urban Miriam Rodrigues Iuama.
For the production of the video, images from the collection of Museu Histórico Sorocabano and drone images made by Claudio Tadeu de Sousa were used.
Data compiled to Google Earth Pro software to illustrate the flood spot.
Soundtrack: Special effects from the you tube library
Translated with www.DeepL.com/Translator (free version)