Question

When the water level of a stream or river exceeds its natural banks, it has reached its
A. plateau.
B. capacity.
C. flood stage.
D. crest.

Answer 1

When the water level of a stream or river exceeds its natural banks, it has reached it flood stage.
#answerisC

Answer 2

C. FLOOD STAGE is reached when the water level of a stream or river exceeds its natural banks.

Flood stage is a level at which a body of water's surface has risen to a sufficient level to cause sufficient inundation in areas that are not normally covered by water, causing inconvenience or a threat to life and/or property.