Page 27 - Oxford City SuDS DESIGN & EVALUATION
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Local SuDS specific requirements conditions in the upper catchment, water
run-off has led to erosion of the Boundary
SuDS are a significant means of managing Brook, and channelisation has increased the
and reducing flood risk and are therefore the flow of water within the channel, reducing
preferred method of drainage within the that entering the fen itself. It is important to
Oxford City area.
ensure that effective SuDS are used within
When proposing a Major development within the catchment of the Lye Valley to slow
the Oxford City area, applicants should also surface water flows and to reduce the chance Local SuDS requirements
consult Oxfordshire County Council guidance, of pollution reaching surface and ground
as they are consulted on such applications in water.
their role as Lead Local Flood Authority Given the unique nature of The Lye Valley
(LLFA)
SSSI, discharge to the underlying aquifer is
the preferred method of water disposal
The Lye Valley
(where infiltration rates permit). Other
The Lye Valley is a Site of Special Scientific methods of water disposal, such as
Interest (SSSI) containing alkaline spring fens, attenuation and discharge to a water body or
reported as one of the best examples of sewer, should only be considered if ground
calcareous valley fens in southern England, investigation, ground contamination and/or
and a rare and threatened habitat. It is poor permeability prohibit this.
reported that due to changes in hydrological
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Oxford City Council SuDS D & E Guide © 2018 McCloy Consulting & Robert Bray Associates
