ABSTRACT
Even on a smaller scale, we now know that evaporation from a lake or from the reservoir above a dam can play a significant role. For example, Lake Nasser, which was created by the Aswan High Dam, evaporates 11% of its volume of water each year,
which is equivalent to 14 km3 of water. This represents a loss of 3 meters of depth from the surface each year. Meanwhile, losses due to evaporation from areas under vegetal cover, such as a forest, are far from being negligible. The Amazon rainforest, for example, loses up to 80% of incident precipitation through evaporation.
