Flood risk from groundwater : examples from a Chalk catchment in southern England

Hughes, A.G.; Vounaki, T.; Peach, D.W.; Ireson, A.M.; Jackson, C.R.; Butler, A.P.; Bloomfield, J.P. ORCID: https://orcid.org/0000-0002-5730-1723; Finch, J.; Wheater, H.S.. 2011 Flood risk from groundwater : examples from a Chalk catchment in southern England. Journal of Flood Risk Management, 4 (3). 143-155. https://doi.org/10.1111/j.1753-318X.2011.01095.x

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Abstract/Summary

Groundwater flooding has moved up the policy-makers' agenda as a result of the United Kingdom experiencing extensive groundwater flooding in winter 2000/2001. However, there is a lack of appropriate methods and data to support groundwater flood risk assessment. The implications for flood risk assessment of groundwater flooding are outlined using a study of the Chalk aquifer underlying the Pang and Lambourn catchments in Berkshire, UK. Groundwater flooding in the Chalk results from the water table reaching the land surface and producing long-duration surface flows (weeks to months), causing significant disruption to transport infrastructure and households. By analyzing existing data with a farmers' survey, it was found that groundwater flooding consists of a combination of intermittent stream discharge and anomalous springflow. This work shows that there is a significant challenge involved in drawing together data and understanding of groundwater flooding, which includes vital local knowledge, reasonable risk assessment procedures and deterministic modelling.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1111/j.1753-318X.2011.01095.x
Programmes:	BGS Programmes 2010 > Groundwater Science CEH Topics & Objectives 2009 - 2012 > Water
UKCEH and CEH Sections/Science Areas:	Reynard
ISSN:	1753-318X
Date made live:	07 Dec 2011 09:15 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/16078

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