The River Heathwall, more often known as the Heathwall Sewer,[1][2] Heathwall Ditch or Heathwall Mill Pond[3] was a set of field drainage ditches and a large mill pond in Battersea, London. It had two outlets into the tidal Thames and its inland section roughly followed Wandsworth Road. Its eastern outlet was at Nine Elms.[4]
The Greenwoods' map of 1827 confirms the mill pond served a tide mill, harnessing of the locally great tidal energy.[5] The generic prototype may have such a mill in the nascent City of London, in Roman Britain.[6]
The river was covered in 1866, as was the nearby Falconbrook. Pumping stations were added for the drainage of northern Battersea and to allow for widespread development.[1][7] Heathwall Pumping Station is now part of the Thames Tideway Scheme.[8]
51°28′59″N 0°08′10″W / 51.483°N 0.136°W / 51.483; -0.136