ANÁLISE DAS CHEIAS E SECAS ANUAIS, NO RIO GONGOGI, NA BACIA HIDROGRÁFICA DO RIO DE CONTAS- BAHIA.

BACIA HIDROGRÁFICA DO RIO DE CONTAS

Abstract

Water resources are essential for the survival of living beings and maintenance of the regional economy. Therefore, considering the impasses for the articulation of water management, this work aims to analyze the amplitude of hydrological floods and droughts in the sub-basin of the Gongogi River, through the study of the variation of flow rates, with emphasis on the impact of the operation of two dams: Morrinhos and Mata do Meio dam. From the historical series (1948 -2018) of water levels recorded at the 52790000 Fluviometric Station, located in the municipality of Gongogi-BA. For this purpose, the Advanced Experimental Hydrology methodology developed by Gonçalves (2014) was employed, with emphasis on the variables that estimate the flow limit that will determine the dry and/or flood period. The results obtained indicate that the average amplitude of floods prevailed, while in the amplitude of droughts a higher percentage of large ones was observed, demonstrating that the sub-basin tends to water deficit.