The maps below show the changes in area after construction of a hydroelectric power dam. Summarise the information by selecting and reporrting the main features, and make comparisons where relevant.

The maps illustrate the changes in a particular area after constructing a hydroeleltric power dam from 1980 to 2000. Overall, there were a significant changes took place in this area through 20 years. It is noticeable that many natural site disappeared instead of the erection of some electrical facilities. In 1990, the river located in […]