The parts of a river can include the bed which is the bottom of the river, Then you have the banks which holds the water in or sets the boundaries. The source of the water comes from the headwater which can be a lake, spring or glacier. Then you have the mouth of the river which is where it flows to. The river also has a path or course which determines which way it goes. You can have an upper, middle and lower path. And last but not least is the channel which is the deepest part of the river’s course.