Marc Daniel Heintz , Maria Hagemeier-Klose and Klaus Wagner
Article: Towards a Risk Governance Culture in Flood Policy—Findings from the Implementation of the “Floods Directive” in Germany
Water 2012, 4(1), 135-156; doi:10.3390/w4010135 - published online 2 February 2012
Show/Hide AbstractAbstract: The European Directive on the Assessment and Management of Flood Risks is likely to cause changes to flood policy in Germany and other member states. With its risk governance approach, it introduces a holistic and catchment-oriented flood risk management and tries to overcome shortcomings of the past, such as the event-driven construction of mainly structural measures. However, there is leeway for interpretation in implementing the directive. The present paper gives an overview on the implementation of the floods directive in Germany and is divided into two qualitative empirical case studies. Case Study I investigates the level of acceptance of the floods directive among decision-makers in the German part of the Rhine river basin. Findings show that the federal states respond differently to the impulse given by the floods directive. Whereas some decision-makers opt for a pro-forma implementation, others take it as a starting point to systematically improve their flood policy. Case Study II presents recommendations for a successful implementation of flood risk management plans that have been developed within a project for the water authority in Bavaria and might be interesting for other federal/member states. For a participation of the interested parties on the level of shared decision-making, the planning process has to work on sub-management-plan level (15–20 communities). The water resources authority has to adopt a multi-faceted role (expert, responsible or interested party depending on the discussed topics).

Laurent Ahiablame , Bernard Engel and Taisha Venort
Article: Improving Water Supply Systems for Domestic Uses in Urban Togo: The Case of a Suburb in Lomé
Water 2012, 4(1), 123-134; doi:10.3390/w4010123 - published online 1 February 2012
Show/Hide AbstractAbstract: The rapid urbanization facing developing countries is increasing pressure on public institutions to provide adequate supplies of clean water to populations. In most developing countries, the general public is not involved in strategies and policies regarding enhancement, conservation, and management of water supply systems. To assist governments and decision makers in providing potable water to meet the increasing demand due to the rapid urbanization, this study sought to characterize existing water supply systems and obtain public opinion for identifying a community water supply system model for households in a residential neighborhood in Lomé, Togo. Existing water supply systems in the study area consist of bucket-drawn water wells, mini water tower systems, rainwater harvesting, and public piped water. Daily domestic water consumption in the study area compared well with findings on water uses per capita from Sub-Saharan Africa, but was well below daily water usage in developed nations. Based on the surveys, participants thought highly of a large scale community water tower and expressed interest in maintaining it. Even though people rely on water sources deemed convenient for drinking, they also reported limited confidence in the quality of these sources.

Valentina Lazarova , Vincent Sturny and Gaston Tong Sang
Article: Relevance and Benefits of Urban Water Reuse in Tourist Areas
Water 2012, 4(1), 107-122; doi:10.3390/w4010107 - published online 31 January 2012
Show/Hide AbstractAbstract: Urban water reuse is one of the most rapidly growing water reuse applications worldwide and one of the major elements of the sustainable management of urban water cycle. Because of the high probability of direct contact between consumers and recycled water, many technical and regulatory challenges have to be overcome in order to minimize health risks at affordable cost. This paper illustrates the keys to success of one of the first urban water reuse projects in the island Bora Bora, French Polynesia. Special emphasis is given on the reliability of operation of the membrane tertiary treatment, economic viability in terms of pricing of recycled water and operating costs, as well as on the benefits of water reuse for the sustainable development of tourist areas.

Daniel Gilles , Nathan Young , Harvest Schroeder , Jesse Piotrowski and Yi-Jia Chang
Article: Inundation Mapping Initiatives of the Iowa Flood Center: Statewide Coverage and Detailed Urban Flooding Analysis
Water 2012, 4(1), 85-106; doi:10.3390/w4010085 - published online 16 January 2012
Show/Hide AbstractAbstract: The State of Iowa, located in the Midwestern United States, has experienced an increased frequency of large floods in recent decades. After extreme flooding in the summer of 2008, the Iowa Flood Center (IFC) was established for advanced research and education specifically related to floods. IFC seeks to improve Iowa’s flood hazard awareness through the development of easily accessible, high-quality mapping products. Mapping initiatives consist of two model development approaches: (1) statewide floodplain delineation using one-dimensional (1D) models, and (2) urban flood mapping using detailed one-dimensional/two-dimensional (2D) coupled models. The statewide floodplain project will benefit Iowans through the creation of a comprehensive set of floodplain maps developed under a single consistent methodology. These will be important tools in evaluating flood risk, regulating floodplains, and participating in the National Flood Insurance Program. Detailed urban flood analyses are used to develop inundation map libraries. These map libraries are meant to supplement National Weather Service river stage flood forecasts by providing a visual representation of potential flood extent according to predicted river stage at stream gage locations.

Tingju Zhu and Claudia Ringler
Article: Climate Change Impacts on Water Availability and Use in the Limpopo River Basin
Water 2012, 4(1), 63-84; doi:10.3390/w4010063 - published online 16 January 2012
Show/Hide AbstractAbstract: This paper analyzes the effects of climate change on water availability and use in the Limpopo River Basin of Southern Africa, using a linked modeling system consisting of a semi-distributed global hydrological model and the Water Simulation Module (WSM) of the International Model for Policy Analysis of Agricultural Commodities and Trade (IMPACT). Although the WSM simulates all major water use sectors, the focus of this study is to evaluate the implications of climate change on irrigation water supply in the catchments of the Limpopo River Basin within the four riparian countries: Botswana, Mozambique, South Africa, and Zimbabwe. The analysis found that water resources of the Limpopo River Basin are already stressed under today’s climate conditions. Projected water infrastructure and management interventions are expected to improve the situation by 2050 if current climate conditions continue into the future. However, under the climate change scenarios studied here, water supply availability is expected to worsen considerably by 2050. Assessing hydrological impacts of climate change is crucial given that expansion of irrigated areas has been postulated as a key adaptation strategy for Sub-Saharan Africa. Such expansion will need to take into account future changes in water availability in African river basins.

Vasilis Kanakoudis , Stavroula Tsitsifli and Anastasia Papadopoulou
Article: Integrating the Carbon and Water Footprints’ Costs in the Water Framework Directive 2000/60/EC Full Water Cost Recovery Concept: Basic Principles Towards Their Reliable Calculation and Socially Just Allocation
Water 2012, 4(1), 45-62; doi:10.3390/w4010045 - published online 16 January 2012
Show/Hide AbstractAbstract: This paper presents the basic principles for the integration of the water and carbon footprints cost into the resource and environmental costs respectively, taking the suggestions set by the Water Framework Directive (WFD) 2000/60/EC one step forward. WFD states that full water cost recovery (FWCR) should be based on the estimation of the three sub-costs related: direct; environmental; and resource cost. It also strongly suggests the EU Member States develop and apply effective water pricing policies to achieve FWCR. These policies must be socially just to avoid any social injustice phenomena. This is a very delicate task to handle, especially within the fragile economic conditions that the EU is facing today. Water losses play a crucial role for the FWC estimation. Water losses should not be neglected since they are one of the major “water uses” in any water supply network. A methodology is suggested to reduce water losses and the related Non Revenue Water (NRW) index. An Expert Decision Support System is proposed to assess the FWC incorporating the Water and Carbon Footprint costs.