- River Gaunless
.
Formed just south of the
village of Copley, by the confluence of Arn Gill (to the south, coming west from south of Langleydale Common) and Hindon Beck (to the north and coming east from Langleydale Common), the Gaunless wends its way east, passing the settlements ofButterknowle , Cockfield andEvenwood and throughWest Auckland before skirting the south and east ofBishop Auckland on its way to meet theRiver Wear .The Gaunless Viaduct, built in 1825, was the tallest
viaduct on theSouth Durham & Lancashire Union Railway .ettlements
* Copley
* Butterknowle
* Evenwood
* West Auckland
* Bishop AucklandTributaries
* Arn Gill
* Hindon Beck
** Cowclose Beck
*** Foul Sike
* Grewburn Beck
** Howle Beck
* Gordon Beck
* Norton Fine Beck
* Oakley Cross Beck
* Hummer Beck
* Dene Beck
* Coundon Burn
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