In the world, biggest reservoirs were created in the fifty's (1950). On opposite, the Three Gorges will be completely filled in two thousand and nine (2009). So, your huge artificial lake offers the possibility to study its evolution from its creation. We can consider the Three Gorges being a natural laboratory. It is important to study a lake since its creation because the highest kinetics evolution are encountered during the first years following the filling up of a reservoir, that's why it is opportune to process a geomorphological and biological parameters monitoring. "China 3G Survey" suggests establishing a reference state of this unique configuration, and thus following its evolution during the first years of its life.