whereas east in Ravensbourne Park, the destination of the stream depicted in early maps, the elevations are AOB by Paddeswick Road. Close to the River Thames the lower reaches of the above routes used for sanitary sewers are intercepted by Sir Joseph Bazalgette's Northern Low Level Sewer which reaches the Northern Outfall Sewer in Stratford, however directly south of the original mouth are overflow outfalls in Furnival Gardens and of the western mouth on Chiswick Eyot which regularly are in use during rainy days, leading to a major project underway, the Thames Tideway Scheme, a strong motivation for which is the desire to comply with the EU's Urban Waste Water Treatment Directive. Audacious plans in 2008 were proposed by a firm of architects whose chief vision was to recreate a marshy stream at the Walbrook, as in pre-Roman London, to recreate Hammersmith Creek in Hammersmith by putting the A4 underground. City planners consider however that while extra water provides a few expensive views for residents, it does not provide recreational or air quality improving space. See also Tributaries of the River Thames Subterranean rivers of London List of rivers in England Notes and references Notes References Subterranean London Subterranean rivers of London 1Stamford