scholarly journals Modelling differential geomorphic effectiveness in neighbouring upland catchments: implications for sediment and flood risk management in a wetter world

2021 ◽  
pp. 030913332110455
Author(s):  
David J Milan
Keyword(s):  
Risk Management ◽  
Shear Stress ◽  
Flood Risk ◽  
Flood Risk Management ◽  
Morphodynamic Modelling ◽  
Structural Resistance ◽  
Channel Boundary ◽  
Summer Storm ◽  
The Uk ◽  
Total Sediment

In July 2007 an intense summer storm resulted in significant activation of the sediment system in the Thinhope Burn, UK. Catchment- and reach-scale morphodynamic modelling is used to investigate the geomorphic work undertaken by Thinhope Burn; comparing this with the more subdued responses shown by its neighbours. Total sediment efflux for Thinhope Burn over the 10 yr period 1998-2007 was 18, 801 m3 four times that of the larger Knar Burn catchment and fifty-four times that of the smaller Glendue Burn catchment. For a discharge of 60 m3s-1, equivalent to the July 2007 Thinhope flood, sediment efflux was 575 m3, 76 m3, and 67 m3 for Thinhope, Glendue and Knar Burns respectively. It is clear that Thinhope Burn undertook significantly more geomorphic work compared to its neighbours. Analysis of the population of shear stress for reach-scale simulations on Thinhope Burn highlighted that the final three simulations (flood peaks of 60, 90, 236 m3s-1) all produced very similar distributions, with no marked increase in the modal shear stress (∼250 Nm-2). This possibly suggests that flows >60 m3s-1 are not able to exert significantly greater energy on the channel boundary, indicating that flows in the region of 60 m3s-1 attain ‘peak’ geomorphic work. It is argued that factors such as strength resistance of the key sediment sources (e.g. paleoberms perched on terraces), structural resistance to flood waves imposed by valley form resistance, location sensitivity and transmission resistance, may all offer explanations for increased geomorphic effectiveness compared with its neighbours. With the expectation of greater rainfall totals in the winter and more extreme summer events in upland areas of the UK, it is clear that attention needs to focus upon the implications of this upon the morphological stability of these areas not least to aid future sustainable flood risk management.

Insurance and sustainability in flood-risk management: the UK in a transitional state

Area ◽  
2013 ◽  
Vol 45 (3) ◽  
pp. 266-272 ◽  
Author(s):  
Tom Ball ◽  
Alan Werritty ◽  
Alistair Geddes
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Flood Risk Management ◽  
Transitional State ◽  
The Uk

scholarly journals The evolution of climate change guidance for fluvial flood risk management in England

2017 ◽  
Vol 41 (2) ◽  
pp. 222-237 ◽  
Author(s):  
Nicholas S Reynard ◽  
Alison L Kay ◽  
Molly Anderson ◽  
Bill Donovan ◽  
Caroline Duckworth
Keyword(s):  
Climate Change ◽  
Risk Management ◽  
Flood Risk ◽  
Flood Management ◽  
Flood Risk Management ◽  
Future Climate Change ◽  
Adaptation Measures ◽  
Increased Risk ◽  
The Uk ◽  
Impacts Of Climate Change

Floods are one of the biggest natural hazards to society, and there is increasing concern about the potential impacts of climate change on flood occurrence and magnitude. Furthermore, flood risk is likely to increase in the future not just through increased flood occurrence, but also through socio-economic changes, such as increasing population. The extent to which adaptation measures can offset this increased risk will depend on the level of future climate change, but there exists an urgent need for information on the potential impacts of climate change on floods, so that these can be accounted for by flood management authorities and local planners aiming to reduce flood risk. Agencies across the UK have been pro-active in providing such guidance for many years and in refining it as the science of climate change and hydrological impacts has developed. The history of this guidance for fluvial flood risk in England is presented and discussed here, including the recent adoption of a regional risk-based approach. Such an approach could be developed and applied to flood risk management in other countries, and to other sectors affected by climate change.

scholarly journals Urban and river flooding: Comparison of flood risk management approaches in the UK and China and an assessment of future knowledge needs

2019 ◽  
Vol 12 (4) ◽  
pp. 274-283 ◽  
Author(s):  
Matteo Rubinato ◽  
Andrew Nichols ◽  
Yong Peng ◽  
Jian-min Zhang ◽  
Craig Lashford ◽  
...  
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Flood Risk Management ◽  
River Flooding ◽  
Management Approaches ◽  
The Uk

scholarly journals Downpour! – Flood risk communication through interactive immersive street games

2019 ◽  
Vol 3 (1) ◽  
pp. 18-24 ◽  
Author(s):  
Jana Wendler ◽  
Emma L. Shuttleworth
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Public Discourse ◽  
Environmental Science ◽  
Flood Management ◽  
Flood Risk Management ◽  
Storm Events ◽  
Interactive Games ◽  
Active Involvement ◽  
The Uk

In this paper, we discuss the potential role of immersive interactive games in public engagement with environmental science, in this case flood risk management. Recent high magnitude storm events in the UK have fuelled great public interest in flooding. However, there remains an apparent mismatch between the scientific voice of flooding research and the wider public discourse, which we argue games may be able to address. Downpour! is a street game that casts players as flood risk advisers in a fictional flooding scenario. Players work in teams to respond to an immediate crisis and make longer-term decisions about mitigation through a series of encounters with actors, films, puzzles and treasure hunts. The game was created by a street game designer in collaboration with film-makers, environmental scientists and public institutions, with performances at the Manchester Science Festival and the Festival of Social Science 2016. Based on observations and responses from these events, we discuss how the game fostered understanding of, and engagement with, decision-making in flood risk management. Games offer people the agency to experiment with decisions in a safe space. As a result, we found that players begin to independently interrogate both scientific and political dimensions of flood management. The immersive nature of a street game further creates an emotional connection with the issues, which has the potential for triggering active involvement in flood-related efforts. We conclude by reflecting on the process behind the game creation, commenting on the strengths and difficulties of innovative collaborations between environmental scientists and creative practitioners.

scholarly journals Floodplain conflicts: regulation and negotiation

2011 ◽  
Vol 11 (10) ◽  
pp. 2889-2902 ◽  
Author(s):  
J. Pardoe ◽  
E. Penning-Rowsell ◽  
S. Tunstall
Keyword(s):  
Risk Management ◽  
Case Studies ◽  
Flood Risk ◽  
Spatial Planning ◽  
Flood Risk Management ◽  
Policy Statement ◽  
Planning Policy ◽  
Primary Focus ◽  
The Uk

Abstract. In the continuing shift from engineered solutions towards more holistic methods of managing flood risk, spatial planning has become the primary focus of a conflict between land and water, water and people. In attempting to strike a balance between making space for water and making space for people, compromises are required. Through five case studies in the UK, this paper analyses the effectiveness of Planning Policy Statement 25 (PPS 25) and the processes of negotiation that it promotes. This assessment allows us to draw conclusions on the nature of the compromises this kind of negotiation can achieve and the implications of this for flood risk management. What emerges is that the beneficial impacts of decisions to develop floodplain areas are given a proper hearing and sensible conditions imposed, rather than arguments to prevent such development remaining unchallenged.

Future flood risk management in the UK

2006 ◽  
Vol 159 (1) ◽  
pp. 53-61 ◽  
Author(s):  
E. Evans ◽  
J. Hall ◽  
E. Penning-Rowsell ◽  
P. Sayers ◽  
C. Thorne ◽  
...  
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Flood Risk Management ◽  
The Uk

Providing future UK heavy precipitation guidance for water management stakeholders using a convection-permitting climate model ensemble and a spatial extreme statistical model

2021 ◽  
Author(s):  
Steven Chan ◽  
Elizabeth Kendon ◽  
Benjamin Youngman ◽  
Giorgia Fosser ◽  
Christopher Short ◽  
...  
Keyword(s):  
Water Management ◽  
Risk Management ◽  
Statistical Model ◽  
Flood Risk ◽  
Temporal Variability ◽  
Climate Model ◽  
Flood Risk Management ◽  
Future Climate Change ◽  
Return Levels ◽  
The Uk

<p>The UK Climate Projections (UKCP) provide the latest information on future climate change expected in the UK. The latest UKCP products include the first UK national climate scenarios at a resolution consistent with weather forecasting. In particular, they include projections from a 12-member 2.2km convection permitting climate model (CPM) ensemble, called UKCP Local (2.2km), released by the UK Met Office in September 2019. A key added value of CPMs is their improved representation of precipitation extremes, and as such the UKCP Local ensemble is particularly useful for water management stakeholders (water utilities and flood risk management professionals) for future adaptation in waste water and flood risk management. A key metric of interest is future increases (“uplifts”) of precipitation return levels. However, diagnosing precipitation return levels for such high-resolution model simulations is difficult due to their spatial-temporal variability and correlation. Here, we adapt an Exeter University-developed spatial extreme statistical model which incorporates the spatial-temporal variability and correlation of precipitation extreme, and apply it to daily and hourly precipitation data from the UKCP Local Ensemble for both the present-day and future RCP8.5 simulations. This allows us to provide robust estimates of uplifts for high return levels across all of the UK for months and seasons of interest.</p>

Flood risk management in the Thames Estuary looking ahead 100 years

2005 ◽  
Vol 363 (1831) ◽  
pp. 1455-1474 ◽  
Author(s):  
Sarah Lavery ◽  
Bill Donovan
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Current System ◽  
Flood Plain ◽  
Flood Risk Management ◽  
Thames Estuary ◽  
The North ◽  
River Thames ◽  
The Uk

The River Thames tidal defences have provided protection against the increasing threat of tidal flooding from the North Sea for more than 2000 years. The flood of 1953 was the catalyst for the construction of the current system of River Thames tidal defences, which includes the Thames Barrier, and has provided one of the best standards of flood defence in the UK for over 20 years. Substantial growth is planned through ‘Thames Gateway’, a regeneration initiative of the United Kingdom government. These new developments will fundamentally change the developed footprint in the Thames Estuary flood-plain, and will be in place for at least the next 100 years. This presents a challenge of planning future defence against a background of uncertainty over climate and other environmental change, while ensuring that correct decisions are made concerning the nature and location of new building in the tidal flood-plain. Through its ‘Thames Estuary 2100’ project, the Environment Agency is developing a long-term strategy for flood risk management in the estuary. Implementation of major construction works on the River Thames could commence from around 2015. Alternatively, it may be decided that minimum works are undertaken to provide security and major investment is delayed until uncertainties over climate change have abated. Whatever long-term option is chosen, this must be preceded by a period of collaboration with the Thames Gateway developments to ensure appropriate and sustainable flood defences are incorporated in new riverside construction.

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