Jason Steinbacher January 15, 2014 Mrs. Latyn Parts of a River There are three main parts of a river; they are the source, the tributaries and the mouth. First the source drops water from a higher elevation and the river begins. The river starts out small but then there are tributaries that make the river bigger. (The Delaware rivers source is in the Catskill Mountains) With tributaries in mind, tributaries pump water into a river making it wider. It all depends on this 1. The water volume 2. The water pressure. (The Delaware’s tributary is the Musconetcong River.) Last but not least there is the mouth. The mouth is where the river empties into. The mouth can be a bay or an ocean. When a river gets close to a mouth the river gets wider and deeper. (The Delaware Rivers mouth is Delaware Bay and the Atlantic Ocean.)