The River Roch (pronounced "roach") is a river in Greater Manchester in north-west England, a tributary of the River Irwell that gives Rochdale its name. For the Second World War frigate class, see River class frigate The Murray River in Australia A river is a large natural waterway. ... Greater Manchester is a metropolitan county in England established in 1974 which covers an area roughly encompassing the conurbation of Manchester. ... Royal motto: Dieu et mon droit (French: God and my right) Englands location within the UK Official language English de facto Capital London de facto Largest city London Area  - Total Ranked 1st UK 130,395 km² Population  - Total (2001)  - Density Ranked 1st UK 49,138,831 377/km² Religion... The River Irwell is a river in Lancashire in England that flows through central Manchester before joining the River Mersey, and one of the rivers that drove the Industrial Revolution. ... This article is about the English town. ...

Rising south of Todmorden in the Pennines near the source of the River Calder, it flows south through Littleborough to Rochdale where it is joined by the River Beal at the end of its short course from Milnrow, and the River Spodden from Whitworth. Turning west it runs past Heywood and Bury before meeting the Irwell just to the east of Radcliffe. Todmorden is a town in the county of West Yorkshire, England, southwest of Hebden Bridge, It is part of Calderdale local council. ... Typical Pennine scenery. ... The River Calder is a river in West Yorkshire, England. ... Littleborough is a small town on the western side of the Pennines, which forms part of the Metropolitan Borough of Rochdale. ... Milnrow is a small village in northern England, situated at the foot of the Pennines, between Rochdale and Oldham adjacent to Junction 21 of the M62 motorway. ... Heywood is a town located between Bury and Rochdale in the north-west of England. ... Categories: Stub | Towns in Greater Manchester ... Radcliffe may be refer to: People: Alfred Reginald Radcliffe-Brown Ann Radcliffe, author Charles Radcliffe, magazine editor Daniel Radcliffe, child actor J. A. Radcliffe, British ionospheric physicist and academic Jack Radcliffe, actor [Jeannie A Radcliffe], spagyrist John Radcliffe, physician Mark Radcliffe, DJ Paula Radcliffe, athlete Places: Radcliffe, Iowa Radcliffe, Greater...

The river gets its name from "rached", a Celtic word meaning "river by the forest".

The Doomesday Book gives the name "Recedham" for the settlement that became Rochdale.