Simplify the following text for a Grade 7 native English-speaking person.
Original: Flooding may result from the volume of water within a body of water , such as a river or lake , which overflows or breaks levees , with the result that some of the water escapes its usual boundaries .
Simplified: Flooding usually results from the volume of water within a body of water , such as a river or lake , which overflows . The result is that some of the water escapes its usual boundaries .