Evaluating landscape metrics for characterising hydrological response to storm events in urbanised catchments

Miller, James D. ORCID: https://orcid.org/0000-0002-7705-8898; Stewart, Elisabeth ORCID: https://orcid.org/0000-0003-4246-6645; Hess, Tim; Brewer, Tim. 2020 Evaluating landscape metrics for characterising hydrological response to storm events in urbanised catchments. Urban Water Journal, 17 (3). 247-258. 10.1080/1573062X.2020.1760320

Before downloading, please read NORA policies.

Text Urban Water Journal paper resubmission_V2_clean (2).docx Restricted to NORA staff only Download (5MB)

Abstract/Summary

Hydrological response of an urban catchment to storm events is determined by a number of factors including the degree of urbanisation and distribution and connectivity of urbanised surfaces. Therefore, the ability of spatially averaged catchment descriptors to characterise storm response is limited. Landscape metrics, widely used in ecology to quantify landscape structure, are employed to quantify urban land-cover patterns across a rural-urban gradient of catchments and attribute hydrological response. Attribution of all response metrics, except peak flow, is improved by combining lumped catchment descriptors with spatially explicit landscape metrics. Those representing connectedness and shape of suburban and natural greenspace improve characterisation of percentage runoff and storm runoff. Connectivity and location of urban surfaces are more important than impervious area alone for attribution of timing, validating findings from distributed hydrological modelling studies. Findings suggest potential improvements in attribution of storm runoff in ungauged urban catchments using landscape metrics.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1080/1573062X.2020.1760320
UKCEH and CEH Sections/Science Areas:	Hydro-climate Risks (Science Area 2017-)
ISSN:	1573-062X
Additional Keywords:	hydrology, urban, flood, hydrograph, landscape metrics, catchment descriptors
NORA Subject Terms:	Hydrology
Date made live:	12 Jun 2020 13:58 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/527965

Actions (login required)

View Item

Document Downloads

More statistics for this item...