Collocations with river

.N1. The place where a river starts: the ______ of a river

.N2. A river that it is possible to travel along in a boat : a ________ river

N3. The land beside a river : the _______ of a river e place where a river joins the sea : the ________ of a river

.N4. A river that contains more water than usual, because of heavy rain: a _____ river

._________ N5. The bottom of a river : a river

.N6. A written word for a very big and impressive river : a ________ river

._________ : N7. To cross a river without using a bridge

Source / navigable / banks / mouth / swollen / bed /mighty / ford