Balancing irrigation and hydropower: Case study from Southern Sri Lanka

Balancing irrigation and hydropower: Case study from Southern Sri Lanka PDF

Author: Molle, François, Jayakody, Priyantha, Ariyaratne, Ranjith, Somatilake, H. S.

Publisher: IWMI

Published: 2005

Total Pages: 48

ISBN-13: 9290906073

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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.

Multiple Uses of Water in Irrigated Areas

Multiple Uses of Water in Irrigated Areas PDF

Author: International Water Management Institute

Publisher: IWMI

Published: 1999

Total Pages: 59

ISBN-13: 9290903805

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Water is being transferred out of agriculture to meet the growing demand in other areas, often without an agreement of or compensation to farmers with irrigated land and water rights. Furthermore, there is a failure to recognize that irrigation systems supply water not only for the main fields, but also for domestic uses, home gardens, trees and other permanent vegetation, and livestock. Other productive uses include fishing, harvesting of aquatic plants and animals, and a variety of other enterprises such as brick making. In addition, irrigation systems can have a positive or negative effect on wildlife habitats. Thus, the withdrawal of water affects the rural household, rural economy, and the environment in a number of ways. This paper argues that to ensure efficient, equitable, and sustainable water use, to reduce poverty and improve the well-being of the community, irrigation and water resources policies need to take into account all uses and users of water within the irrigation system. The multiple uses of water in the Kirindi Oya irrigation system are examined in this paper. An interdisciplinary group of scientists have investigated a number of areas including water accounting, water quality, household water use, the valuing of water for alternative uses, and the complementarities, competition, and conflicts among uses and users.

Water Scarcity and Managing Seasonal Water Crisis

Water Scarcity and Managing Seasonal Water Crisis PDF

Author: R. Sakthivadivel

Publisher: IWMI

Published: 2001

Total Pages: 38

ISBN-13: 9290904445

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Coping with scarcity of water supply for managing irrigation under uncertain and inadequate conditions has become part and parcel of many irrigation systems in the semiarid tropics of Asia. Based on a case study of the Kirindi Oya Irrigation and Settlement Project (KOISP) in southern Sri Lanka, this report provides evidence of the uncertain and inadequate inflow into the reservoir and its impact on the seasonal planning.

The reliability improvement in irrigation services: Application of rotational water distribution to tertiary canals in Central Asia

The reliability improvement in irrigation services: Application of rotational water distribution to tertiary canals in Central Asia PDF

Author: Abdullaev, Iskandar, Ul Hassan, Mehmood, Manthrithilake, Herath, Yakubov, Murat

Publisher: IWMI

Published: 2006

Total Pages: 31

ISBN-13: 9290906391

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his report addresses a specific context of massive inequity and unevenness in water allocation and distribution experienced presently by the water users in transitional Central Asian economies, as a result of broad-scale fragmentation of the previously large farms. The report describes action research aimed at making water distribution at the tertiary level more reliable, transparent and equitable.

Irrigation and schistosomiasis in Africa: Ecological aspects

Irrigation and schistosomiasis in Africa: Ecological aspects PDF

Author: Boelee, Eline, Madsen, H.

Publisher: IWMI

Published: 2006

Total Pages: 43

ISBN-13: 9290906316

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his research report discusses ecological aspects of schistosomiasis transmission and options for its control in irrigated areas in Africa through environmental measures. Human schistosomiasis is endemic in 46 African countries.After being infected by larvae emerging from human excreta and urine deposited in the water, freshwater snails act as intermediate hosts.

Effectiveness of nongovernment organizations in developing local irrigation organizations: A case study from Sri Lanka

Effectiveness of nongovernment organizations in developing local irrigation organizations: A case study from Sri Lanka PDF

Author:

Publisher: IWMI

Published:

Total Pages: 113

ISBN-13: 929090304X

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This paper reports on a detailed sociological study carried out as the NGO (or change agent) was completing three-year projects in two sites, Nagadeepa and Pimburettewa. The study describes the change agent's strategy, and analyzes its impact and the perceptions of farmers and government officials regarding its impact. The case study is placed in a wider context, in terms of both the participatory management policy of the Government of Sri Lanka, and the lessons learned that are relevant for NGOs working in other countries as well.

Irrigation and Water Policies in the Mekong Region

Irrigation and Water Policies in the Mekong Region PDF

Author: François Molle

Publisher: IWMI

Published: 2005

Total Pages: 47

ISBN-13: 9290906081

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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.