What makes floods?

Answer 1

A Floodtide can come over night and cover all of the dry land.

or,

Rivers flood because snow melts and dams burst and heavy rain, all these can cause the water level to rise and this can cause floods.

Answer 2

The rainfall which can allow the river to overflow it's bank onto a flood plain.
Excessive precipitation.

Answer 3

rain makes floods it happens when there is to much rain or snow melts into the rivers or lakes and they overflow

Answer 4

each summer it rains is give it all the water it gets.

Answer 5

it floods because there is too much rain.