Page 26 - Hammersmith SuDS DESIGN & EVALUATION
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6.0 Local SuDS requirements for
Local SuDS requirements
Hammersmith and Fulham
Landscape character Wastewater from many neighbouring
boroughs is also directed into the sewers that
Hammersmith and Fulham (H&F) is a small, pass through the borough which impacts on
heavily urbanised inner London Borough their capacity, particularly during heavy
which comprises predominantly of residential storms. Capacity constraints in the Counters
and commercial land use. It is located in the Creek sewer system which serves this part of
north western part of Greater London, London are a known issue. Many parts of the
covering an area of approximately 16.4km2, borough are susceptible to surface water/
sitting directly to the north of the River sewer flooding and the council’s Surface
Thames with around 7km of river frontage Water Management Plan identifies over 200
along its southern boundary. Topographic flooding hotspots.
surveys show that apart from an area in the
north, the Borough is largely flat, with a very Local geology
slight decrease in elevation from Shepherds
Bush in the north through Hammersmith in The bedrock geology in H&F is
the central part of the borough to Fulham predominantly London Clay. However, as
and the River Thames in the south. shown in Figure X superficial deposits of
sand and gravel (Kempton Park Gravel
21 Although the borough does have some large Formation) overlie the London Clay across
areas of open space and parks, the urban the southern extent of the Borough
nature of the borough means that there is a (Goldhawk Road towards the River Thames).
large amount of impermeable surface present Superficial deposits of clay and silt (Langley
in H&F. There are also a large number of Silt Member) overlie the London Clay across
basement properties in the borough which the area between the Westway (A40) and
are particularly at risk of surface water/sewer Goldhawk Road, and around the area of
flooding. The drainage infrastructure across Brook Green and Hammersmith Road. The
the borough is almost entirely a combined permeable gravels outline the historic
sewer system which is operated by Thames floodplain of the River Thames and may
Water. The proximity of the River Thames contain a perched water table. If, following
provides the opportunity for some direct heavy rainfall, the water table within this
discharge of surface water run-off, but apart gravel layer rises, localised groundwater
from this, most stormwater run-off is directed flooding may occur in excavations and
into the sewer system. basements.
Hammersmith and Fulham London Borough Council SuDS D & E Guide © 2018 McCloy Consulting & Robert Bray Associates
