River Allen

The River Allen is a river in the English county of Northumberland. The river has its sources in the hills of the Northern Pennines, and is formed by the confluence of the East and West Allen rivers. The Allen is a tributary of the River South Tyne, which itself, a tributary of the River Tyne. The Allen was formerly very polluted from mining activity upstream, but remediation schemes have been implemented to allow the water quality to improve.