The potential of runoff attenuation features as a Natural Flood Management approach

Nicholson, Alex; O’Donnell, Greg; Wilkinson, Mark E.; Quinn, Paul

doi:10.1111/jfr3.12565

Cited by 49 publications

(71 citation statements)

References 28 publications

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“…Abstraction and catchment management options have the potential to mitigate such impacts if designed to adapt to projected increases in precipitation, and reduce the impact of extended drought periods (Bouwer, 2002; Hewett, Wilkinson, Jonczyk, & Quinn, 2020). Storage and attenuation features, shown to affect flood peak discharge (Nicholson, O'Donnell, Wilkinson, & Quinn, 2020; Wilkinson, Quinn, & Welton, 2010) and groundwater recharge (Escalante et al, 2007), could help build resilience to flooding and droughts using both traditional engineering approaches (Volpi, Di Lazzaro, Bertola, Viglione, & Fiori, 2018) or nature‐based solutions (NBS) (Nesshöver et al, 2017). NBS are “actions that aim to help societies address a variety of environmental, social and economic challenges in sustainable ways.…”

Section: Discussionmentioning

confidence: 99%

“…Storage and attenuation features, shown to affect flood peak discharge (Nicholson, O'Donnell, Wilkinson, & Quinn, 2020;Wilkinson, Quinn, & Welton, 2010) and groundwater recharge (Escalante et al, 2007), could help build resilience to flooding and droughts using both traditional engineering approaches (Volpi, Di Lazzaro, Bertola, Viglione, & Fiori, 2018) or nature-based solutions (NBS) (Nesshöver et al, 2017). NBS are "actions that aim to help societies address a variety of environmental, social and economic challenges in sustainable ways.…”

Section: Discussionmentioning

confidence: 99%

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Lessons from the 2018 drought for management of local water supplies in upland areas: A tracer‐based assessment

Fennell

Geris

Wilkinson

et al. 2020

Hydrological Processes

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Climate change, combined with industrial growth and increasing demand, could result in serious future water shortages and related water quality and temperature issues, especially for upland and humid areas. The extreme 2018 drought that prevailed throughout Europe provided an opportunity to investigate conditions likely to become more frequent in the future. For an upland rural catchment utilised by the distilling industry in NorthEast Scotland, a tracer-based survey combined discharge, electrical conductivity, stable water isotopes and temperature measurements to understand the impacts of drought on dominant stream water and industry water sources, both in terms of water quantity and quality (temperature). Results showed that water types (groundwater, ephemeral stream water, perennial stream water and water from small dams) were spatially distinct and varied more in space than time. With regards to the drought conditions we found that streams were largely maintained by groundwater during low flows. This also buffered stream water temperatures. Water types with high young water fractions were less resilient, resulting in streams with an ephemeral nature. Although our results demonstrated the importance of groundwater for drought resilience, water balance data revealed these storage reserves were being depleted and only recovered towards the end of the following year because of above average rainfall in 2019. Increased storage depletion under continued trends of extreme drought and water abstraction could be addressed via informed (nature based) management strategies which focus on increasing recharge. This may improve resilience to droughts as well as floods, but site specific testing and modelling are required to understand their potential. Results could have implications for management of water volumes and temperature, particularly for the sustainability of an historic industry, balancing requirements of rural communities and the environment.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Lessons from the 2018 drought for management of local water supplies in upland areas: A tracer‐based assessment

Fennell

Geris

Wilkinson

et al. 2020

Hydrological Processes

Self Cite

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“…It is likely that the locations for the dams may in reality be chosen to dam "reservoirs" that are wider than the average stream width, where the stream bed is particularly flat or where there is capacity for significant overflow onto the floodplain, or additional off-line storage (e.g. Quinn et al, 2013;Nicholson et al, 2019). We suggest that the contribution to the crosssectional area due to the volume in the reservoir in Eq.…”

Section: Non-dimensional Modelmentioning

confidence: 98%

“…2. undesired synchronisation of flood peaks (see Pattison et al, 2014), where measures intended to slow the flow could result in flood peaks being increased under some scenarios;…”

Section: Introductionmentioning

confidence: 99%

A risk-based network analysis of distributed in-stream leaky barriers for flood risk management

Hankin

Hewitt

Sander

et al. 2020

Nat. Hazards Earth Syst. Sci.

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Abstract. We develop a network-based model of a catchment basin that incorporates the possibility of small-scale, in-channel, leaky barriers as flood attenuation features, on each of the edges of the network. The model can be used to understand effective risk reduction strategies considering the whole-system performance; here we focus on identifying network dam placements promoting effective dynamic utilisation of storage and placements that also reduce risk of breach or cascade failure of dams during high flows. We first demonstrate the model using idealised networks and explore risk of cascade failure using probabilistic barrier-fragility assumptions. The investigation highlights the need for robust design of nature-based measures, to avoid inadvertent exposure of communities to a flood risk, and we conclude that the principle of building the leaky barriers on the upstream tributaries is generally less risky than building on the main trunk, although this may depend on the network structure specific to the catchment under study. The efficient scheme permits rapid assessment of the whole-system performance of dams placed in different locations in real networks, demonstrated in application to a real system of leaky barriers built in Penny Gill, a stream in the West Cumbria region of Britain.

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“…It is likely that the locations for the dams may in reality be chosen to dam "reservoirs" that are wider than the average stream width, where the stream bed is particularly flat, or where there is capacity for significant overflow onto the floodplain, or additional off-line storage (e.g. 15 Nicholson et al, 2019). We suggest that the contribution to the cross-sectional area due to the volume in the reservoir in (9) is therefore underestimated, and should be increased.…”

Section: Non-dimensional Modelmentioning

confidence: 99%

A risk-based, network analysis of distributed in-stream leaky barriers for flood risk management

Hankin¹,

Hewitt²,

Sander³

et al. 2020

Preprint

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Abstract. We develop a network-based model of a catchment basin that incorporates the possibility of small-scale, in-channel, leaky barriers as flood attenuation features, on each of the edges of the network. The model can be used to understand effective risk reduction strategies considering the whole-system performance; here we focus on identifying network dam placements promoting effective dynamic utilisation of storage, and placements that also reduce risk of breach or cascade failure of dams during high flows. We first demonstrate the model using idealised networks and explore risk of cascade failure using probabilistic barrier-fragility assumptions. The investigation highlights the need for robust design of nature-based measures, to avoid inadvertent exposure of communities to a flood risk, and we conclude that the principle of building the leaky-barriers on the upstream tributaries is generally less risky than building on the main trunk, although this may depend on the network structure specific to the catchment under study. The efficient scheme permits rapid assessment of performance of dams placed in different locations in real networks, demonstrated in application to a real system of leaky barriers built in Penny Gill, a stream in the West Cumbria region of Britain and which leads to further design advice.

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The potential of runoff attenuation features as a Natural Flood Management approach

Cited by 49 publications

References 28 publications

Lessons from the 2018 drought for management of local water supplies in upland areas: A tracer‐based assessment

Lessons from the 2018 drought for management of local water supplies in upland areas: A tracer‐based assessment

A risk-based network analysis of distributed in-stream leaky barriers for flood risk management

A risk-based, network analysis of distributed in-stream leaky barriers for flood risk management

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