Both heavy rain and runoff can cause floods.
When rain is heavy and land is inclined , it rolls into stream. It is known as runoff.
It is primarily bcause runoff from the rain washes sediment into the river.
Chemical runoff in an agricultural context is when farming chemicals, such as fertilizer are not absorbed into the topsoil. When a heavy rain comes, these chemicals are caught in the storm water runoff and make their way into streams, rivers, and lakes.
acid rain comes from chemicals in the clouds, not runoff there is no "car runoff" runoff is from the slanted ground into water bodies
....runoff is when water overflows from a river so if theres too much rain it could overflow the river and create a runoff
desert plateaus are made because of heavy rainfall. You may think that it doesn't rain in the desert, but it does. It doesn't rain very often but when it does it usually results in flash flooding. Because there is no runoff, the water causes erosion so there can be runoff. The erosion is what makes the plataeu.
Runoff from rain and runoff from melting snow (which is NOT the same as glacial runoff).
heavy rain on sloped granite
rain
runoff
Runoff from the field sprayed with herbicides polluted the river. The heavy rains caused runoff that eroded the hill. We planted trees on the hillside so runoff from heavy rains would not cause erosion.