Last name meaning Ferris: This is an Anglicization of the Old Gaelic name O' Fearghusa - a compound of the Gaelic O (meaning grandson or male descendant) and the personal name Fergus, composed of the elements fear - a man and gus - vigour or force...
At other times, a confluence can be the location where two smaller streams or rivers merge to become the source for a new river. This is the case in Pittsburgh, Pennsylvania, where the Monongahela River and Allegheny River merge to create the Ohio River.
A river is the general term for a channel and the. water in it. The area supplying water into a channel is a drainage basin. The boundary. between drainage basins is a water divide. A river system is composed of the main. stream and many tributaries. However, there are many cases where several tributaries. have similar length and flow, and it is difficult to determine which is the main stream. A drainage pattern is a plan of a river system.