Counter's Creek (or Chelsea Creek) is a largely subterranean stream that arises in Kensal Green, west London and flows south into the River Thames on the Tideway at Sands End, Chelsea. Two small tributaries that rise just west of Ladbroke Grove enter the stream close to Latimer Road just south of St Quintin Avenue.

More information on the Wikipedia page [1].

The London's Lost Rivers page is here and the Thames Water page is [2].

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