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| Titel |
Hydrological impacts of floodplain restoration: a case study of the River Cherwell, UK |
| VerfasserIn |
M. C. Acreman, R. Riddington, D. J. Booker |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 7, no. 1 ; Nr. 7, no. 1, S.75-85 |
| Datensatznummer |
250004422
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| Publikation (Nr.) |
 copernicus.org/hess-7-75-2003.pdf |
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| Zusammenfassung |
| This paper investigates the impacts on floods of hypothetical changes to river
channel geometry by construction or removal of embankments to prevent water spreading onto
the floodplain at high flows. A numerical model is applied to the River Cherwell between
Oxford and Banbury to simulate changes to flood hydrographs. Embanking the river increases
the peak flows downstream by 50-150%. Restoring the river channel through the floodplain
to pre-engineered dimensions reduces peak flow by around 10-15% and increases peak water
levels within the floodplain by 0.5-1.6 m. These results suggest that floodplain
rehabilitation, in terms of embankment removal or returning the channel to pre-engineered
dimensions, can be a valuable part of the flood management strategy of a catchment. Both
measures lead to increased inundation of the floodplain, which can be positive for
ecological restoration.
Keywords: floodplains, hydrological impacts, rehabilitation, flood frequency |
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