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Environmental flows are central to equitable distribution of and access to water and services provided by aquatic ecosystems. They refer to the quality, quantity, and timing of water flows required maintaining the components, functions, processes and resilience of aquatic ecosystems that provide goods and services to people. They are fundamental for sustainable water resources development, benefits sharing, and poverty alleviation. Nonetheless, water resources development planners have often overlooked environmental flows or addressed them inadequately. This two-part report, based on the Bank's economic sector analysis, shows their central importance for Integrated Water Resource Management (IWRM) and presents data, findings, and recommendations, based on in-depth case study analysis, to help make environmental water allocation an integral part of IWRM.
This book advances the understanding and integration in operational terms of environmental flows (water allocation) into integrated water resources management (IWRM). Based on an in-depth analysis of 17 global water policy, plan, and project case studies, it addresses the highly contested complexities of environmentally responsible water resources development, broadens the global perspectives on "equitable sharing" and "sustainable use" of water resources, and expands the definitions of "benefits sharing" in high-risk water resources development. The book fills a major gap in knowledge on IWRM and forms an important contribution to the ongoing discourse on climate change adaptation in the water sector.
The overall goal of the analysis presented in this report is to advance the understanding and integration in operational terms of environmental water allocation into integrated water resources management. The specific objectives of this report are the following: 1) document the changing understanding of environmental flows, by both water resources practitioners and by environmental experts within the Bank and in borrowing countries; 2) draw lessons from experience in implementing environmental flows by the Bank, other international development organizations with experience in this area, and a small number of developed and developing countries; 3) develop an analytical framework to support more effective integration of environmental flow considerations for informing and guiding: (a) the planning, design, and operations decision making of water resources infrastructure projects; (b) the legal, policy, institutional, and capacity development related to environmental flows; and (c) restoration programs; and 4) provide recommendations for improvements in technical guidance to better incorporate environmental flow considerations into the preparation and implementation of lending operations.

Flow

International Union for Conservation of Nature and Natural Resources

Published: 2003

Total Pages: 144


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An environmental flow is the water regime provided within a river, wetland or coastal zone to maintain ecosystems and their benefits where there are competing water uses and where flows are regulated. Pioneering efforts in South Africa, Australia and the United States have shown that the process to establish them poses great challenges. Second in the series of the Water & Nature Initiative, this guide draws extensively on the experiences in these countries to offer hands-on advice and practical guidance on technical issues for this emerging issue on the water resource agenda.
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This book addresses the impact of soil and water quality on food production, and explores soil and water conservation measures to be applied at farm level for agricultural sustainability. Divided into 8 chapters, the book covers topics such as soil properties responsible for soil loss, the impact of climate change, water and biological factors on soil chemistry, the effect of soil on the quality of water including sustaining aquaculture productivity and environment of wetlands, soil and water qualities necessary for irrigation, management of soil organic carbon, and the importance of soil moisture conservation including agroforestry for food production. Particular attention is given to the management of soil organic carbon in sustainable crop cultivation as well as reducing soil erosion and nutrient loss from soil from cultivated lands. The book concludes with a chapter that integrates soil and water conservation with sustainable food production and food safety.
This book focuses on mega-droughts of the past 20 years. Twelve cases from both developed and developing countries are elaborated in the book. Its intention is to draw lessons from the cases of extremely severe water shortages so that countries and stakeholders can be better prepared for extreme drought events in the future. Several recurrent themes emerge from the diverse case studies and descriptions of programs. For example, most chapters discuss the necessity to move from reactive (compensatory) to preventive policies. This theme has implications for use of insurance in developing countries, e.g. is insurance encouraging investments to help countries avoid disasters or is it acting mostly in a humanitarian way to compensate for losses to help people? Several authors point to the importance of risk assessment and to developing risk based policies for drought. This raises statistical issues of how such assessments of uncertainty and risks are done and how they relate to actual occurrence of events. Most chapters call for more inter-sectoral policies, policies which integrate water resources management approaches and to the necessity of raising public awareness of droughts in times of no drought. The issue of structural versus nonstructural is clear in most cases. While often cast as ‘either/or’ the message that emerges is more one of how do you integrate these approaches. Finally, a few chapters bring to light how prevention is needed for national security as well as water security. In Focus – a book series that showcases the latest accomplishments in water research. Each book focuses on a specialist area with papers from top experts in the field. It aims to be a vehicle for in-depth understanding and inspire further conversations in the sector.