Avalanche hazard mitigation strategies assessed by cost effectiveness analyses and cost benefit analyses ¬– Evidence from Davos, Switzerland

This paper demonstrates the application of cost effectiveness analysis and cost benefit analysis to alternative avalanche risk reduction strategies in Davos, Switzerland. The advantages as well as limitations of such analysis for natural hazards planning are discussed with respect to 16 avalanche risk reduction strategies. Scenarios include risk reduction measures that represent the main approaches to natural hazards planning in Switzerland, such as technical, organisational, and land use planning measures.

Assessment of flood mitigation measures. Further development of a proactive methodology applied in a suburban area in Gothenburg.

Flooding due to extreme rain events in urban environments is a problem and a growing concern. When the stormwater systems design return period are greatly exceeded during extreme rain events, flooding is inevitable. However, the flood consequences can be mitigated by surface water management. A Swedish methodology, Plan B, is developed for investigation and planning of extreme rain events by means of flood simulation models.

Urban flood protection post-project appraisal in England and Wales

Post-project appraisals were carried out for flood protection projects completed during 1960–1987 in six locations in England and Wales. The methodology focused on assessing the implications of new hydrological-hydraulic analyses of flood risks, and of urban land use changes. With hindsight, four of the projects showed higher economic returns than expected, but not all of these were subject to a pre-scheme benefit-cost analysis.

Living with climate: can the water sector lead in building resilient societies?

Speech on the policy issues in the climate debate that affect water resource management with examples from Southern and subSaharan Africa more generally, because it is one of the regions where the challenges and threats are greatest and the resources and ability to respond most limited.

Prioritisation Method for Adaptation Measures to Climate Change in the Water Sector

In this document, the methodology and the concepts for prioritisation of adaptation measures are comprehensively explained. Prior to this, a theoretical focus is presented to link the concepts of climate change, water, adaptation and economics. Firstly, an understanding of how climate change can affect the water cycle is provided, along with an explanation and listing of different existing adaptation measures to climate change for water supply and sanitation management. Later, it is presented how climate change can be linked to economic analysis.

Adapting to climate change with water savings and water reuse

Climate change due to global warming will reduce river flows across much of Australia and reduce the yield of existing urban and rural water systems. These reductions are additional to yield reductions that have flowed from the allocation of more water for environmental flows under national water reforms, and the severity of the 2001-2007 drought in southern Australia.

Economic Impacts of Rapid Glacier Retreat in the Andes

In the Andes, runoff from glacierized basins is an important element of water budgets, assuring year-round flows for agriculture, potable water, power generation, and ecosystem integrity. Thus, changes induced by tropical glacier retreat constitute an early case of the need for adaptation and the type and size of associated economic and social impacts caused by climate change.

Global Analysis of Changes in Water Supply Yields and Costs under Climate Change: A Case Study in China

Using China as a case study, a methodology is presented to estimate the changes in yields and costs of present and future water production systems under climate change scenarios. Yield is important to consider because it measures the actual supply available from a river basin. Costs are incurred in enhancing the natural yield of river basins by the construction and operation of reservoirs and ground water pumping systems. The interaction of ground and surface waters within a river basin and instream flow maintenance are also modeled.

Climate Change Impacts and Adaptation: Quantify the Cost of Impacts and Adaptation

The aim of this project is to advance knowledge of the costs of climate change in the UK, by generating initial estimates of the welfare effects associated with specific impacts occurring under a range of climate change and socioeconomic scenarios for the UK. To the extent possible, it also indicates how and where the burden of these welfare affects may fall. In order to generate robust results, that will facilicate adaptation assessment, a primarily bottom-up approach based on local, regional and national case studies in a range of key impact sectors is adopted.