Hydrological impacts of floodplain restoration: a case study of the River Cherwell, UK

Acreman, M.; Riddington, R.; Booker, D. J.

doi:10.5194/hess-7-75-2003

Cited by 92 publications

(55 citation statements)

References 17 publications

(12 reference statements)

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“…Wetlands 322 UK wetlands are important both for the biodiversity they support (Merritt, 1994) and the 323 services they perform for mankind, such as nutrient removal (Fisher and Acreman, 2004), and 324 flood reduction (Acreman et al, 2003). There are three important types of wetland that must be considered in the Thames and 333…”

mentioning

confidence: 99%

The British river of the future: How climate change and human activity might affect two contrasting river ecosystems in England

Johnson

Acreman

Dunbar

et al. 2009

Science of The Total Environment

139

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mentioning

confidence: 99%

The British river of the future: How climate change and human activity might affect two contrasting river ecosystems in England

Johnson

Acreman

Dunbar

et al. 2009

Science of The Total Environment

139

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“…agriculture (Holman et al, 2003;Sullivan et al, 2004), forestry (Robinson, 1998a;1998b;Archer, 2003), land drainage (Conway and Millar, 1960), channel modification (Acreman et al, 2003), wetlands (Mitsch and Gosselink, 2000). However, not all the possible land management practices are feasible in terms of implementing them in all catchments.…”

Section: ) To Compile a List Of Potential Land Management Scenarios mentioning

confidence: 99%

“…The effect of relative timing on peak flows downstream has been investigated in a limited number of studies (Acreman et al, 2003;Lane 2003a;Thomas and Nisbet, 2007).…”

Section: ) To Determine Which Areas (Sub-catchments) Of the Catchmenmentioning

confidence: 99%

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Rural land management impacts on catchment scale flood risk

Pattison¹

2010

Role of Hydrology in Managing Consequences of a Changing Global Environment

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source• a link is made to the metadata record in Durham E-Theses• the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full Durham E-Theses policy for further details. Most approaches to this problem aim to upscale from individual grid cells to whole catchments, something that restricts the complexity of possible process representation, produces models that may not be parsimonious with the data needed to calibrate them and, faced with data uncertainties, provides computational limitations on the extent to which model uncertainty can be fully explored. Rather than upscaling to problems of concern, this thesis seeks to downscale from locations of known flood risk, as a means of identifying where land use management changes might be beneficial and then uses numerical modelling to identify the kinds of management changes required in those downscaled locations. Thus, the aim of this thesis is to test an approach to understanding the impacts of rural land management upon flood risk based upon catchment-to-source downscaling.This thesis uses the case study of the River Eden catchment (2400 km 2 ) as a test (1) it was shown to have a significant impact on downstream flood risk; and (2) it had range of data and information needed for modelling land use changes.The second part of this thesis explored the land management scenarios that could be used to reduce flood risk at the catchment scale. The scenarios to be tested were determined through a stakeholder participation approach, whereby workshops were held to brainstorm and prioritise land management options, and then to identify specific locations within the Eamont sub-catchment where they could tested. There were two main types of land management scenarios chosen: (1) landscape-scale changes, including afforestation and compaction; and (2) corresponding to a 5.8% decrease in peak discharge. A key conclusion is that land management practices have been shown to have an effect on catchment scale flooding, even for extreme flood events. However, the effect of land management scenarios are both spatially and temporally dependent i.e. the same land management practice has different effects depending on where it is implemented, and when implemented in the same location has different effects on different flood events.

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“…According to the Manning's relationship v = 1/n × R 2/3 × I 1/2 , water velocity or v is a function of water surface and has an inverse relation to roughness coefficient n (Acreman et al 2003). Therefore, the roughness parameter turns out to be an effective parameter commonly obtained through a calibration procedure (Lane & Ferguson 2005;Hunter et al 2007;Casas et al 2010).…”

mentioning

confidence: 99%

The impact of vegetation on the bank erosion (Case study: The Haraz River)

Gholami

Khaleghi

2013

Soil Water Res.

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Vegetation establishment is a suitable biological method of erosion control. Bank erosion is one form of water erosion and its adverse effects include an increase in turbidity, degradation of riverbank lands, difficulties caused by sediments depositing in the downstream. The rate of riverbank erosion can be decreased by application of biological methods in sensitive reaches identified. In this study, a 3250 m section of the Haraz River was studied to evaluate the effects of vegetation establishment on shear stress, water velocity and finally on the bank erosion. In this research, Geographical Information System (HEC-GeoRAS extension), HEC-RAS software, and topographic maps of riverbed at the scale of 1:500 were used to simulate hydraulic behaviour of the Haraz River. In order to evaluate the effect of vegetation cover on the bank erosion, roughness coefficient of Manning was determined with the Cowan method for two seasons (winter and summer) separately, due to changes in vegetation in the considered sections during different seasons of the year. The results showed that vegetation establishment on riverbanks caused changes in water velocity, water depth, power of shear stress and this all should finally be reflected in the rate of bank erosion.

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Hydrological impacts of floodplain restoration: a case study of the River Cherwell, UK

Cited by 92 publications

References 17 publications

The British river of the future: How climate change and human activity might affect two contrasting river ecosystems in England

The British river of the future: How climate change and human activity might affect two contrasting river ecosystems in England

Rural land management impacts on catchment scale flood risk

The impact of vegetation on the bank erosion (Case study: The Haraz River)

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