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Integração de geotecnologias para apoiar respostas a eventos hidrológicos críticos: a experiência da Unidade Estadual de Monitoramento Hidrometeorológico durante as inundações de 2015 na bacia do Rio Acre – Acre/Brasil

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The Amazon, in general, and Acre, in particular, have suffered annually with extreme weather events related to variations in rainfall andriver levels, and consequently with wet season floods and dry season water supply problems. In Acre, the interannual climate variability and extreme rainfall and drought events have affected river flows, jeopardizing local populations. In the year 2015, data collected from the PCDs indicated values of 335 and 471 mm of precipitation for Assis Brasil and of 408 and 368 mm for Brasileia, in January and February, respectively, considered records for the region, when compared to the mean of precipitation in these localities for the period from 1980 to 2014. The result of these heavy rains was the rise in the level of the river in the capital to 18.37 meters, four meters above flood level, the highest flood on record, affecting 53 districts, 32 rural areas and more than 100,000 people, with a cost estimated at 200 to 600 million reals. The integration of geotechnologies was fundamental to the monitoring of the flow of water during this flood that affected all municipalities along the Acre River Basin. The correlation of accumulated precipitation in river basins with the variation of river levels, supported several institutions, anticipating disasters. The Hydroestimator was adopted to indicate possible flood risk areas in locations without data collection platforms, and was incorporated into the TerraMA2 platform to generateearly flood warnings.