Have you heard about 'Water Cup' competition set up by Aamir Khan in Maharastra state of india? India is facing the same problem. In summer, the land is dry and arid. People don't have water to drink, let alone for their crops and other human necessities. However, there is flood in the rainy season. The main reason for this is lack of vegetation like herbs, shrubs and trees. Thus, the volunteers of Water Cup aim to apply scientific technologies to make any barren land green and lively.
Here is a link to their youtube video:

You might want to do something like that in Manikgunj.