Civil engineering is a branch of engineering which deals with people, civilization of a country, their needs and basic facilities. So as long as there are humans and as long as we have natural phenomenon like earthquakes and tornadoes civil engineers will be required.

Civil engineering includes following aspects of engineering:

Structural Engineering,

Architectural Engineering

Geotechnical Engineering

Offshore Engineering

Transportation Engineering

Environmental Engineering

There is a good scope in this branch.

Good luck.