Urbanisation affects the natural hydrological cycle by increasing peak flow and decreasing lag times. The result of this is increased flooding in urban areas and degradation of the environment in terms of accelerated erosion and increased pollution.These changes are not sustainable and this review explains what Sustainable Drainage Systems (SuDS) are and how they act with natural systems to militiate against flooding and pollution. The role and function of individual SuDS structures, such as wetlands, swales and ponds, are examined as well as the way in which they are linked to provide treatment trains. SuDS began to be used worldwide 20 years ago and this review considers their development in Sweden and the USA as well as their successful introduction in Scotland in recent years and their subsequent adoption in England.
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|Published - Apr 2003