A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Modelling and mapping groundwater flooding at the ground surface in Chalk catchments
There are several mapping products available that depict areas susceptible to groundwater flooding; however, they are not comparable in detail to the risk maps developed for fluvial, tidal and surface water flooding that are used by risk management authorities. This paper reports on a new approach to groundwater flood risk mapping for unconfined Chalk aquifers. This approach recognises the synergies between surface water flooding and groundwater flooding once groundwater has emerged at the surface. The volume of groundwater at the surface is modelled by identifying the zone of groundwater emergence and calculating the rate of emergence using a Darcy approach. Flow is then routed using a bespoke two‐dimensional hydraulic model to give the depth and extent of groundwater flooding. These groundwater emergence and routing maps are calibrated on measured groundwater flow and observed flood extents. The maps are anticipated to be used to plan for and manage future groundwater flooding events.
Modelling and mapping groundwater flooding at the ground surface in Chalk catchments
There are several mapping products available that depict areas susceptible to groundwater flooding; however, they are not comparable in detail to the risk maps developed for fluvial, tidal and surface water flooding that are used by risk management authorities. This paper reports on a new approach to groundwater flood risk mapping for unconfined Chalk aquifers. This approach recognises the synergies between surface water flooding and groundwater flooding once groundwater has emerged at the surface. The volume of groundwater at the surface is modelled by identifying the zone of groundwater emergence and calculating the rate of emergence using a Darcy approach. Flow is then routed using a bespoke two‐dimensional hydraulic model to give the depth and extent of groundwater flooding. These groundwater emergence and routing maps are calibrated on measured groundwater flow and observed flood extents. The maps are anticipated to be used to plan for and manage future groundwater flooding events.
Modelling and mapping groundwater flooding at the ground surface in Chalk catchments
Morris, S.E. (author) / Cobby, D. (author) / Zaidman, M. (author) / Fisher, K. (author)
Journal of Flood Risk Management ; 11 ; S251-S268
2018-01-01
18 pages
Article (Journal)
Electronic Resource
English
Application of head-flow responses to groundwater floods in Chalk catchments
| Online Contents | 2007
An early warning system for groundwater flooding in the Chalk
| Online Contents | 2010
Comprehensive analysis of flooding in unmanaged catchments
| Online Contents | 2012