The provided diagram illustrates the changes in the layout of a town after a hydropower dam is built over two decades.
Overall, the town witnessed significant developments, with the most noticeable being the infrastructure around the dam and the lake.
In 1990, there was a forest in the top left-hand corner of the map, alongside with the ruin to the south of the forest. However, in 2010, both of these were demolished for the construction of the artificial lake. The mountain in the downstream part of the river remained the same over the period despite major changes to the river. In addition, the farmlands located to the north of the villages was chopped down in order to build a hotel and extend the lake.
It can be observed that the hydroelectric dam was built in the middle of the river in 2010. The area of rare species in the southwest side of the town was transformed into an electric transmission system. The electric transmission system was also constructed next to the dam. Furthermore, it is obvious that the villages to the east of the river remained unchanged.