One of the streams arose on the west of Wormwood Scrubs near the Old Acton Wells and flowed south down Old Oak Common Road and Old Oak Road. The second, known locally as The Warple ran just west of Horn Lane and south down Warple Way, named after the stream. It turned into Ravenscourt Park and fed the former moat there.
The county of London formed in 1889 was bounded by Stamford Brook and it runs along the boundary of Hammersmith and Fulham and the Borough of Hounslow under British Grove. By 1900, the brook had been covered over and is now a sewer. It runs down Old Oak Road and then Askew Road where it meets the Northern Interceptor at Goldhawk Road. It then continues down Paddenswick Road into Dalling Road (Lower) and meets the Western branch of Stamford Brook (fed by the Bollo Brook, which comes down Goldhawk Road before following King St.) The combined flow then goes past Hammersmith Town Hall before meeting the Western Interceptor just before the River Thames.