What problems did the construction of the aswan high dam create for the people of egypt and their environment?

The Aswan High Dam took 11 years to be built, and was finalized in 1970 across the Nile River to stop the massive devastating floods, it generates electric power, the water stored is shared between Egypt and Sudan and it was crucial during the drought years of Africa, and it has helped the irrigation system for new acres and dessert land. But despite the benefits it has created problems such as:

for hobos it was a very hard time most hid on the sides of the railroad tracks causing people to get bulls and get them off sometimes causing in fatal death they couldnt get people to give them money because the   people were also in need of money

state law

most seat belt laws in the united states are left to the states. however, the first seat belt law was a federal law.