Jessica Lamond

Cities and flooding : a guide to integrated urban flood risk management for the 21st century

The guide serves as a primer for decision and policy makers, technical specialists, central, regional and local government officials, and concerned stakeholders in the community sector, civil society and non-governmental organizations, and the private sector. The Guide embodies the state-of-the art on integrated urban flood risk management. The Guide starts with a summary for policy makers which outlines and describes the key areas which policy makers need to be knowledgeable about to create policy directions and an integrated strategic approach for urban flood risk management. The core of the Guide consists of seven chapters, organized as: understanding flood hazard; understanding flood impacts; integrated flood risk management (structural measures and non-structural measures); evaluating alternative flood risk management options: tools for decision makers; implementing integrated flood risk management; and conclusion. Each chapter starts with a full contents list and a summary of the chapter for quick reference.

Accessibility of flood risk insurance in the UK: confusion, competition and complacency

Flood risk insurance can be an effective tool in assisting the restoration of damaged property after a flood event and sustaining communities through difficult times. It can also form part of a wider flood risk management strategy. In the light of recent flood events in the UK and in the context of changing property insurance markets, the universal cover previously enjoyed by floodplain residents has been called into question. Conflicting media and industry views leave the floodplain resident and the wider community in confusion. A survey of floodplain residents in England regarding their experience with flooding and flood insurance in England has been undertaken. The results reveal that some floodplain residents do indeed encounter difficulties when seeking insurance for their homes. However, despite the risk‐averse policies of some insurers, availability of insurance is still strong in both at‐risk and previously flooded locations. Success in gaining insurance may lead to complacency among residents who see no advantage in pursuing other, more costly, damage mitigation actions. As a tool in risk management, therefore, the market is prevented from realising its potential by competition, which results in a lack of a consistent approach, rewards homeowners search strategies and reduces information flow.

Five feet high and rising : cities and flooding in the 21st century

Urban flooding is an increasingly important issue. Disaster statistics appear to show flood events are becoming more frequent, with medium-scale events increasing fastest. The impact of flooding is driven by a combination of natural and human-induced factors. As recent flood events in Pakistan, Brazil, Sri Lanka and Australia show, floods can occur in widespread locations and can sometimes overwhelm even the best prepared countries and cities. There are known and tested measures for urban flood risk management, typically classified as structural or engineered measures, and non-structural, management techniques. A combination of measures to form an integrated management approach is most likely to be successful in reducing flood risk. In the short term and for developing countries in particular, the factors affecting exposure and vulnerability are increasing at the fastest rate as urbanization puts more people and more assets at risk. In the longer term, however, climate scenarios are likely to be one of the most important drivers of future changes in flood risk. Due to the large uncertainties in projections of climate change, adaptation to the changing risk needs to be flexible to a wide range of future scenarios and to be able to cope with potentially large changes in sea level, rainfall intensity and snowmelt. Climate uncertainty and budgetary, institutional and practical constraints are likely to lead to a combining of structural and non-structural measures for urban flood risk management, and arguably, to a move away from what is sometimes an over-reliance on hard-engineered defenses and toward more adaptable and incremental non-structural solutions.

The Impact of Flooding on the Price of Residential Property: A Transactional Analysis of the UK Market

The increase in frequency and severity of flood events in the UK has highlighted the question of the impact of flooding on the value of property. Previous studies in the UK and internationally have measured a wide variety of impacts from no impact to discounts of more than 40 per cent of property price. Transactional measurements have not previously been attempted in the UK property market due to lack of available data. In order to improve the available evidence base, a variation of the repeat sales methodology has been used to measure the impact of flooding on the price of transacted residential property for 13 locations in the UK. The results reveal the impact of flood events to be highly variable and temporary and no effect of flood designation. The policy implications of these findings with regard to the perceptions and behaviours of property stakeholders are explored.

Does the price impact of flooding fade away

Purpose – Climate change will present many new challenges for professionals in the built environment. Observers have speculated that the increase in damage to property caused by more frequent and severe flood events may result in loss of property value. However a consistent link between flood risk and value has not been proven in the UK to date. This paper aims to investigate the impact of flooding on property value in the UK.Design/methodology/approach – As part of an ongoing study into the impact of flooding on property value in the UK, the available international evidence has been examined and general lessons drawn. A case study is presented of an example site, flooded in 2000, using actual transaction data.Findings – This research demonstrates that, in general, there is a tendency for people to forget about the risk of flood damage with time. However, various manifestations of floodplain designation or regulation including mandatory insurance purchase can maintain awareness in the longer term. For the...

An analysis of the costs of resilient reinstatement of flood affected properties: A case study of the 2009 flood event in Cockermouth

Purpose – Recently, the focus of UK and European flood risk management policy has been towards promoting the uptake of property level flood adaptation measures. Despite this focus, the take‐up of property level flood adaptation measures (both resilient and resistant) remains very low. One of the apparent barriers to uptake is the cost of installing such measures. This study aims to investigate the cost of adopting resilient reinstatement measures by considering a small number of actual properties that were flooded in Cockermouth during 2009.Design/methodology/approach – Secondary data obtained from a loss adjusting company provides the basis for analysis. The data take into consideration the cost benefit of resilient repair, assuming the same properties were flooded again. The traditional reinstatement costs were established as the actual cost of putting the properties back in a like‐for‐like manner while resilient reinstatement costs were established by creating new resilient repair schedules based on re...

Measuring the impact of flooding on UK house prices: A new framework for small sample problems

Purpose – The purpose of this research is to show how the measurement of the effect of flooding on house value can be invaluable information for professional valuers and homeowners alike. In the UK, even for an event as devastating as the autumn 2000 flood, the number of properties affected in any one town is small and so robust estimation is problematic and methodology applied elsewhere needs modification. A new framework for analysing the effect of flooding on house value in the UK is presented.Design/methodology/approach – Data issues play a crucial role in determining the methodology employed in any analysis. A repeat sales methodology is proposed which allows for the tracking of effects through time. The analysis can be extended to multiple sites via a block design thereby increasing the sample size.Findings – Empirical analysis of one case study site demonstrates the inherent small sample problem and yet reveals patterns that fall in line with expected outcomes in many respects.Research limitations/...

The impact of flood insurance on residential property prices: Towards a new theoretical framework for the United Kingdom market

The supposition that the availability and cost of insurance will have an effect on house prices is often accepted as fact. However the mechanism for this supposed impact has not been clearly articulated and the hypothesis is far from proven in the UK market. Measurement of the effect of insurance is complicated by the fact that the parties are acting in the presence of incomplete information and that insurance costs can act as a proxy for other value drivers such as flood risk. Models useful in other countries cannot be applied sensibly to the UK market because of the unique properties of the UK insurance regime. Novel hypotheses are suggested for the three principal ways in which the availability and cost of insurance might influence the prospective property transfer. A method for testing one of these hypotheses is proposed using a quasi‐experimental approach with the aim of determining whether a relationship between insurance cost and house price does indeed exist.