A remote sensing based integrated approach to quantify the impact of fluvial and pluvial flooding in an urban catchment

Simple item page
dc.contributor.authorMuthusamy, Manoranjan
dc.contributor.authorRivas Casado, Monica
dc.contributor.authorSalmoral, Gloria
dc.contributor.authorIrvine, Tracy
dc.contributor.authorLeinster, Paul
dc.date.accessioned2019-03-12T11:49:50Z
dc.date.available2019-03-12T11:49:50Z
dc.date.issued2019-03-08
dc.description.abstractPluvial (surface water) flooding is often the cause of significant flood damage in urban areas. However, pluvial flooding is often overlooked in catchments which are historically known for fluvial floods. In this study, we present a conceptual remote sensing based integrated approach to enhance current practice in the estimation of flood extent and damage and characterise the spatial distribution of pluvial and fluvial flooding. Cockermouth, a town which is highly prone to flooding, was selected as a study site. The flood event caused by named storm Desmond in 2015 (5-6/12/2015) was selected for this study. A high resolution digital elevation model (DEM) was produced from a composite digital surface model (DSM) and a digital terrain model (DTM) obtained from the Environment Agency. Using this DEM, a 2D flood model was developed in HEC-RAS (v5) 2D for the study site. Simulations were carried out with and without pluvial flooding. Calibrated models were then used to compare the fluvial and combined (pluvial and fluvial) flood damage areas for different land use types. The number of residential properties affected by both fluvial and combined flooding was compared using a combination of modelled results and data collected from Unmanned Aircraft Systems (UAS). As far as the authors are aware, this is the first time that remote sensing data, hydrological modelling and flood damage data at a property level have been combined to differentiate between the extent of flooding and damage caused by fluvial and pluvial flooding in the same event. Results show that the contribution of pluvial flooding should not be ignored, even in a catchment where fluvial flooding is the major cause of the flood damages. Although the additional flood depths caused by the pluvial contribution were lower than the fluvial flood depths, the affected area is still significant. Pluvial flooding increased the overall number of affected properties by 25%. In addition, it increased the flood depths in a number of properties that were identified as being affected by fluvial flooding, in some cases by more than 50%. These findings show the importance of taking pluvial flooding into consideration in flood management practices. Further, most of the data used in this study was obtained via remote sensing methods, including UAS. This demonstrates the merit of developing a remote sensing based framework to enhance current practices in the estimation of both flood extent and damage.en_UK
dc.identifier.citationMuthusamy M, Rivas Casado M, Salmoral GA, et al., (2019) A remote sensing based integrated approach to quantify the impact of fluvial and pluvial flooding in an urban catchment. Remote Sensing, Volume 11, Issue 5, 2019, Article number 577en_UK
dc.identifier.issn2072-4292
dc.identifier.urihttps://doi.org/10.3390/rs11050577
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/13981
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectfluvial floodingen_UK
dc.subjectpluvial floodingen_UK
dc.subjectHEC-RASen_UK
dc.subjectremote sensingen_UK
dc.subjectunmanned aircraft systemen_UK
dc.subjectflood impacten_UK
dc.subjecturban catchmenten_UK
dc.titleA remote sensing based integrated approach to quantify the impact of fluvial and pluvial flooding in an urban catchmenten_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
impact_of_fluvial_and_pluvial_flooding-2019.pdf
Size:
1.16 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SWEE)