River Don (River Brun)

River Don Black Clough, Thursden Brook in the upper reaches
The River Don and the Cockden Bridge
Data
location	Lancashire , England
River system	River Ribble
Drain over	River Brun  → River Calder (Ribble)  → River Ribble  → Irish Sea
source	southwest of Lad Law 53 ° 48 ′ 32 ″  N , 2 ° 7 ′ 3 ″  W
muzzle	in the River Brun coordinates: 53 ° 47 '51 "  N , 2 ° 12' 51"  W 53 ° 47 '51 "  N , 2 ° 12' 51"  W.

The River Don is a watercourse in Lancashire , England . It arises as Black Clough southwest of the Lad Law from a multitude of small tributaries. It flows west and changes its name to Thursden Brook . After crossing under the Cockden Bridge , it changes its name to the River Don. The River Don flows into the River Brun east of Burnley .