It is formed by the junction, near Mountnorris, of two small streams (the Creggan and the Blackwater), flows by Tandragee, and joins the River Bann one mile above Portadown.
[1] The Cusher River is part of the Newry Canal.
[2] Both of these waters and the Bann connect at Whitecoat.
[3] During the 19th century, the Cusher River had various mills for food.
[4] In June 2008, river pollution killed many roach and trout.