The University of Southampton
University of Southampton Institutional Repository

Urban managed realignment: application to the Thames Estuary, London

Sherwin, C.W. and Nicholls, Robert J. (2007) Urban managed realignment: application to the Thames Estuary, London Journal of Coastal Research, 23, (6), pp. 1525-1534. (doi:10.2112/05-0586.1).

Record type: Article


Over the centuries, London has progressively encroached into the tidal Thames River as it has developed into a “World City”. This encroachment has exacerbated the flood risk to new and adjacent land, despite continual upgrading of flood defences. The pressure for further encroachment remains, despite the new threat of human-induced climate change—that is, the combined effect of (1) increased peak river flow in the winter, (2) more intense precipitation events, (3) accelerated sea-level rise, and possibly (4) more severe storms and resulting storm surges. Costly upgrade of defences is inevitable to manage the increased flood risk, and this has caused a re-evaluation of the Thames Estuary's flood defence program. For the first time, managed realignment in urban areas is being considered as a flood management tool. This offers a range of potential benefits including (1) increasing storage for floodwater, (2) improving ecological functioning, (3) improving riverside access for people, and (4) reversing the long-term trend of encroachment into the river. Planned managed realignment can widen the scope for future defence upgrade, but has been limited in urbanised areas. Several projects in London (e.g., Tate Modern and Millennium Dome) have shown that realignment can achieve the benefits described above, which supports the government's recent “Making Space for Water” policy.
This study investigates the feasibility of managed realignment in the Thames Estuary. Fragmentation between flood defence and spatial development policies, lack of political support, and riverside encroachment continue to delay urban realignment projects. Successful application will require long-term planning (over decades) that exploits all opportunities for landward realignment offered by redevelopment. With the uncertainties behind climate change and more development in the “Thames Gateway”, further research is needed to understand the contribution of urban realignment to any flood management strategy that may be applied to other coastal urban areas.

Full text not available from this repository.

More information

Published date: November 2007
Keywords: urban flood management, thames estuary, flood defence, flood risk, riverside encroachment, habitat conservation, sustainability, london


Local EPrints ID: 52826
ISSN: 0749-0208
PURE UUID: dee55ca5-a1f9-455c-b94d-7c730695503d

Catalogue record

Date deposited: 14 Jul 2008
Last modified: 17 Jul 2017 14:39

Export record


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.