It can cover an entire city or more if it's severe.
Fog
One of the characteristics of floods, is a large amount of rain in a short period of time. Another is sudden rain in a very dry low lying area.
they are called layers
Depends on the flood, how big is the source it is coming from. If a big lake is flouncing, and it is deep water and homes and/or natural areas are around it then it can impact a large amount of area.
Floods pick up all of the pollution on the ground they cover. So, floods lessen clean water.
a plateau
A second is a measure of a time interval that has no relevance to an area measurement.
Your lifespan is not large enough to cover the entire space area.
The answer depends on how large a bookcase you have!
The Amazon River does flood and it usually starts in November. The river floods every year and can swell up to 25 miles and tripling the land area it cover.
Floods mostly occur when there is a LARGE amount of rainfal for a long amount of time.
a plateau