Why was Hammurabi interested in preserving the dams and concerned about the welfare of the peasants?

Hammurrapi watched the strengthening of the dams, since when the rivers flooded, they could flood the fields, which would destroy whole crops.
He took care of the peasants, since they paid taxes, and without wealth it would be difficult for them to do this. It is known that Hammurabi is one of the most prominent kings of antiquity, who also created the lawyer “Code of Hammurabi”.