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Planning for environmental water allocations: An example of hydrology-based assessment in the East Rapti River, Nepal
Although the protection of the aquatic environment is high on the world water resources agenda, most developing countries still lack the technical and institutional capacity to establish environmental water allocation practices and policies. The existing methods of assessment of environmental water allocations are either complex and resource-intensive or not tailor-made for the specific conditions of a particular country or region. To promote emerging concepts of environmental flow assessment and management, it is important to change the dominant perception that environmental demand is the least important and create awareness among responsible authorities about existing methodologies and processes that should be followed. This report presents some of these approaches and illustrates their applicability in the specific context of the East Rapti River basin, which features one of the main tourist attractions of Nepal, the Chitwan National Park.
Environmental Flows in Water Resources Policies, Plans, and Projects
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.
Annual Report
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An assessment of hydrology and environmental flows in the Walawe River Basin, Sri Lanka
Quantification of hydrological processes and water requirements of aquatic ecosystems is required for many projects related to environmental security and efficient water use in agriculture. This also applies to the Asian monsoon region. This paper focuses on the Walawe River basin, located in a semi-arid zone of southern Sri Lanka. The two major reservoirs in the upstream and middle reaches of the river with a total capacity of 486 million cubic meters (MCM) have significantly affected the hydrology of the river, with associated adverse environmental and social consequences.
Irrigation and Water Policies in the Mekong Region
This report documents current irrigation and water policies in the Mekong countries. It successively reviews planning issues, water policies and legal frameworks, the setting up of water policy "apex bodies," participatory policies, and IWRM/river basin management.
How pro-poor are participatory watershed management projects?: An Indian case study
This report draws on a survey and case study evidence from 28 watershed management groups in Haryana to argue that participatory watershed management projects need not necessarily safeguard the interests of poorer rural households.
Working wetlands: classifying wetland potential for agriculture
This paper reports on a form of multi-criteria analysis that provides a formal approach for evaluating the suitability of a wetland for specific agricultural uses, and ensures that explicit consideration is given to the possible consequences of such utilization. The method is based on a hybrid of ideas taken from concepts and methodologies related to: environmental flow assessments, land suitability classification and the hazard evaluation procedures used in the design of dams. The approach, which elaborates the idea of working wetlands, is generic, though the examples presented are for case studies from southern Africa.
Balancing irrigation and hydropower: Case study from Southern Sri Lanka
This report analyzes a case from southern Sri Lanka, where the Samanalawewa dam and the Kaltota Irrigation Scheme (KIS) compete for the water of the Walawe river. At the catchment level, it is shown that dam releases are well attuned to the needs of KIS and to the occurrences of natural runoff, and that little of the dam water is "lost" to the river.
Adoption and impacts of microirrigation technologies: Empirical results from selected localities of Maharashtra and Gujarat states of India
This report analyzes the economics of alternative microirrigation technologies ranging from low-cost drip and sprinkler systems to the capital-intensive systems, the determinants of adoption of microirrigation technology, the poverty outreach of the different microirrigation systems, and the sustainability implications of microirrigation adoption.
When "conservation" Leads to Land Degradation
In this report, we test the hypothesis that the primary factors behind the farming system changes in Ban Lak Sip lay not in the village itself but rather in the broader Laotian social, economic and political setting. The study uses an integrated approach that examines both the physical and social dimensions of land use and soil erosion in Ban Lak Sip within this broader system environment.
