ELVIS SOUZA NASCIMENTO
Abstract:
The construction of reservoirs causes changes in the physicochemical and hydrobiological structure of the aquatic environment, which may generate significant environmental impacts. Thus, this study aimed to evaluate the water quality of the Barra dos Coqueiros UHE reservoir, located in the Rio Claro basin, State of Goiás, in two distinct climatic periods of the Cerrado biome. The limnological parameters evaluated were: nitrate, nitrite, phosphorus, total dissolved solids, suspended sediment concentration and turbidity, obtained from surface water samples collected at forty points distributed within the reservoir from July 2012 to January. 2014, covering the rainy and dry periods of precipitation in the Barra dos Coqueiros UHE reservoir. The results obtained from the water analysis were discussed and compared based on CONAMA Resolution N. 357, of March 17, 2005, fitting the freshwater classes. The results were evaluated for compliance with the limits, verifying points that fall into Classes 1, 2 and 3, determined by Conama Resolution. Some points presented in class 4. Current quality conditions showed good statistical analysis. The most significant correlations occurred between total dissolved solids (TDS) and suspended solids concentration (CSS) with r = 1.
