The River Irwell is a tributary of the River Mersey in north west England. It rises at Irwell Springs on Deerplay Moor, approximately 1+1⁄2 miles (2.5 kilometres) north of Bacup and flows southwards for 39 mi (63 km) to meet the Mersey near Irlam. The Irwell marks the boundary between Manchester and Salford, and its lower reaches have been canalised and now form part of the Manchester Ship Canal.
The river here has much variation in flow. Some deep holding pools, some long fast riffles. Its a great place to have a days wander. Species include Brown Trout, Roach, Dace, Chub, Bream, Pike, Perch and the very occasional Barbel.
