"River Humber"
by cm

Humber Bridge
Creative Commons Attribution Share AlikeHumber Bridge - Credit: Lincolnian, Flickr
The Humber is not technically a river, as the entire body of water is tidal.   The estuary forms part of the border between Yorkshire and Lincolnshire.   It runs from the confluence of the River Ouse and the River Trent to the North Sea. The name Northumbria meant “North of the Humber”.