Urban Flood Mitigation And Stormwater Management

Effective urban drainage to manage stormwater and control flooding depends on good engineering, especially when an environmentally sustainable approach is being applied. This new text focuses on green methods and modelling techniques. It covers the principles of hydrology and drainage, low-impact-development (LID) designs, computer modelling techniques, the evaluation of existing systems, and planning for both new development and urban renewal. It outlines design procedures using examples, spreadsheet models, photos, and real-world design examples. Unlike other books, which focus on extreme events, this book covers hydrologic designs for both extreme and frequent events, and reflects the latest revolution in stormwater LID management, and takes a quantitative as well as a qualitative approach. PowerPoint® presentations and Excel® computer models are provided to follow and build on the exercises in the book. It is written especially for students on urban watershed courses, and also for those studying urban planning, landscaping, water resources, hydrology and hydraulics.

This book brings together the experiences of engineers and scientists from Australia and the United Kingdom providing the current status on the management of stormwater and flooding in urban areas and suggesting ways forward. It forms a basis for the development of a framework for the implementation of integrated and optimised storm water management strategies and aims to mitigate the adverse impacts of the expanding urban water footprint. Among other topics it also features management styles of stormwater and flooding and describes biodiversity and ecosystem services in relation to the management of stormwater and the mitigation of floods. Furthermore, it places an emphasis on sustainable storm water management measures. Population growth, urbanisation and climate change will pose significant challenges to engineers, scientists, medical practitioners, policy makers and practitioners of several other disciplines. If we consider environmental and water engineers, they will have to face challenges in designing smart and efficient water systems which are robust and resilient to overcome shrinking green spaces, increased urban heat islands, damages to natural waterways due to flooding caused by increased stormwater flow. This work provides valuable information for practitioners and students at both senior undergraduate and postgraduate levels.

The purpose of this book is to disseminate contemporary knowledge and practical experiences concerning problems and solutions related to urban hydrology and drainage. Although the main focus is on developing countries, the book draws from experiences in many other parts of the world. Based upon numerous practical examples and case studies, the book provides information to assist in the management, planning and engineering design processes. Urban Stormwater Management in Developing Countries covers a wide range of methods and approaches to improve the understanding and ability of local stakeholders to solve stormwater problems within the framework of integrated urban water management. As well as structural interventions, the book describes various non-structural approaches for flood mitigation and pollution control. This book encourages the reader to adopt an integrated approach towards stormwater management and considers the importance of institutional arrangements, participation of local stakeholders in planning, as well as aspects of financing and cost recovery. This comprehensive and topical book: Addresses the broad range of issues related to urban stormwater management with a specific focus on developing countries. Covers the main aspects of planning, design, operation and maintenance of urban drainage systems as well as socio-economic and institutional issues related to urban stormwater management. Presents structural and non-structural approaches for flood mitigation and pollution control within an integrated water resource management framework. Provides extensive examples and case studies of "best practice". Contents Urbanisation and urban hydrology Impacts of flooding on society Integrated framework for stormwater management Institutional structures and policies Planning for urban stormwater management Approaches to urban drainage system design Ecological approaches to urban drainage system design Applications of computer models Operational performance and maintenance Flood mitigation and response strategies Participation and partnerships Economics and financing Full Contents List (27KB)

Flooding is the natural hazard with the greatest economic and social impact in the United States, and these impacts are becoming more severe over time. Catastrophic flooding from recent hurricanes, including Superstorm Sandy in New York (2012) and Hurricane Harvey in Houston (2017), caused billions of dollars in property damage, adversely affected millions of people, and damaged the economic well-being of major metropolitan areas. Flooding takes a heavy toll even in years without a named storm or event. Major freshwater flood events from 2004 to 2014 cost an average of $9 billion in direct damage and 71 lives annually. These figures do not include the cumulative costs of frequent, small floods, which can be similar to those of infrequent extreme floods. Framing the Challenge of Urban Flooding in the United States contributes to existing knowledge by examining real-world examples in specific metropolitan areas. This report identifies commonalities and variances among the case study metropolitan areas in terms of causes, adverse impacts, unexpected problems in recovery, or effective mitigation strategies, as well as key themes of urban flooding. It also relates, as appropriate, causes and actions of urban flooding to existing federal resources or policies.

The disastrous effects of floods in urban areas of various Indian cities have been increasing in severity and extent over the past decade. This book explores flood disasters, their impact in world and Indian contexts, assessing vulnerability and risks involved, and systematic use of (GIS)-enabled platforms to map mitigation measures sustainably, with special reference to the metropolitan flood mitigation endeavors. This book balances the theoretical with empirical approaches to form a unique standpoint on the various challenges and possible solutions to urban flooding in India. Through a study of major urban flood incidents, this book analyzes the factors which contribute to the rising risk of flooding with increasing urbanization, population dynamics, growth, and urban sprawl, with particular focus on the cities of Chennai, Mumbai, and Hyderabad in India. It also examines disaster governance on urban floods and legislative prospects of flood disasters through discussions on standing acts, United Nations (UN) directives, and internationally adopted practices and actions, which are applicable in the Indian context. An interdisciplinary study, this book brings together tools and research from various disciplines including geography, urban and regional planning, and GIS. It will be an invaluable resource for researchers, scholars, engineers, students, planners, academicians, and professionals of cross-disciplines to help them resolve the problem of urban flooding. It will also be of interest to the general reader seeking to learn more about disasters, urban flooding, engineering, and GIS.

An increment of urban flood risk in many areas around the globe is expected, accentuated due to climate change and urbanisation. Thus, appropriate flood risk management is crucial. Conventional approaches focus on grey infrastructure, which frequently do not address the root causes of risk. A change of paradigm is needed to develop effective adaptation strategies. Green-blue infrastructure (GBI) is a central concept to achieve adaptation to climate change. Its main strength is the ability to deliver multiple benefits. Although strong evidence exists demonstrating that GBI is a sustainable solution to reduce flooding, its adoption is still slow. Therefore, the objective of this research is to help decision-makers to adopt adaptation strategies to cope with flood risk while achieving other benefits. This study provides a framework which introduces co-benefits into decision-making for stormwater infrastructure planning. Besides, the multiple benefits are quantified and their impact on helping GBI implementation are evaluated. Finally, the effects of including co-benefits on the selection of flood mitigation strategies and the trade-offs among cost and benefits are assessed. This work contributes to enhance planning processes for flood mitigation combining green-blue-grey measures. It provides tools and knowledge to facilitate holistic decision-making, in order to ensure safe and liveable urban spaces for current and future conditions.

Like so many of the coastal cities in Southeast Asia (and other regions) established during European colonialism, there has been an ongoing challenge for decades dealing with the growing frequency and intensity of flooding. Jakarta’s flood problems since the 1990s have been nothing less than monumental and the inability of the local and national governments to mitigate flooding in Jakarta is the most visible manifestation of fundamental water management deficiencies. This book offers a comprehensive and systematic historical assessment of Jakarta’s water management practices from the colonial era through the early years of the Indonesian republic and Jakarta’s emergence as a sprawling megacity. This book draws upon a vast multidisciplinary literature and a wide array of government documents to unravel the complex history of water management that has led to approximately 40% of the city now lying below sea level. This book will be a useful reference to those who research on topics such as urbanization in Southeast Asia, sustainable development, urban and planning history, environmental planning, issues of water management (and flooding), and the politics of planning and development.