The Cusher River.

The Cusher River is located in County Armagh, Northern Ireland. It is formed by the joining, near Mountnorris, of two small streams the Creggan and the Blackwater, flows by Tandragee, where in the 19th century there were there were several flax and corn mills, the river joins the River Bann one mile south of Portadown at The Point of Whitecoat.

A short distance south of Portadown is the start of the Newry Canal inland navigation. Here the canal is between two rivers: the Cusher River and the Upper River Bann.

The Cusher River supplemented water to the lower part of the Newry Canal system which was the first inland canal built in the British Isles.