American Society of Civil Engineers

Appropriate Drainage Systems for a Changing Climate in the Water Sensitive City

by R. M. Ashley, (Pennine Water Group, Department of Civil and Structural Engineering, University of Sheffield, Mappin Street, Sheffield, South Yorkshire, S1 3JD, UK E-mail:, M. G. Faram, (Hydro International plc, Shearwater House, Clevedon Hall Estate, Victoria Road, Clevedon, BS21 7RD, UK E-mail:, P. R. Chatfield, (Environment Agency Wales, Cambria House, 29 Newport Road, Cardiff, CF24 0TP, UK E-mail:, B. Gersonius, (UNESCO-IHE, WE Department, Flood Resilience Group, P.O. Box 3015, 2601 DA Delft, The Netherlands E-mail:, and R. Y. G. Andoh, (Hydro International plc, 94 Hutchins Drive, Portland ME, 04102-1930, USA E-mail:
Section: LID and Sustainability, pp. 864-877, (doi:

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Document type: Conference Proceeding Paper
Part of: Low Impact Development 2010: Redefining Water in the City
Abstract: With increasing uncertainty and demands on drainage systems in future the question of what type of system is most appropriate is an important one. Future drainage systems need to be: integrated into the water cycle and into other urban services; multi-functional providing not only wastewater management but also reductions in urban heat island effects; ecosystem and water quality benefits as well as amenity opportunities. Normative systems using pipes and large underground facilities have worked well in the past, but only to preserve public safety; not to provide the other benefits now expected. Indeed normative drainage systems have contributed to the climate changes now being seen by careless energy and resource use. The need for future drainage systems to provide a resilience function is illustrated in this paper and the use of LIDs, SUDS and BMPs is shown to be a significant potential contributor to these needs for the future.

ASCE Subject Headings:
Urban areas
Wastewater management