Estimativa da evaporação líquida no Lago de Sobradinho.

Abstract

One the problems that exist in the administration of resources hydric is the losses of water for evaporation in the regularization reservoirs. This paper had the objective to esteem the net evaporation at lake Sobradinho through the Class A tank methodology and the Linacre, Kohler et al. and CRLE models. The following conclusions were: The values obtained by the Kohler et al. model can be used as reference base to estimate the annual average evaporation of lake Sobradinho; the coefficient of Class A tank that represented better the seasonal variation of evaporation in the lake Sobradinho was 0,57; and the annual average flow corresponding to net evaporation of Sobradinho reservoir was 132 m3 s-1.