Your search found 12 records
1 Manthrithilake, H.; White, R. (Eds.) 1999. Proceedings of the Mahaweli River Basin Management Workshop, 12th-13th March 1999, Kandalama Hotel, Dambulla, Sri Lanka. Colombo, Sri Lanka: Mahaweli Authority of Sri Lanka. 60p.
(Location: IWMI-HQ Call no: 333.91 G744 MAN Record No: H025846)
2 2004. Water quality Sri Lanka. Colombo, Sri Lanka: Net Wwater. 1 CD.
(Location: IWMI-HQ Call no: CD Col Record No: H037092)
A net Wwater Production supported by GWP, through Lanka Jalani
3 Herath, S.; Pathirana, A.; Weerakoon, S. B. (Eds.) 2004. Proceedings of the International Conference on Sustainable Water Resources Management in the Changing Environment of the Monsoon Region. Bandaranaika Memorial International Conference Hall, Colombo, Sri Lanka, 17-19 November 2004. Vol.II. Colombo, Sri Lanka: National Water Resources Secretariat. pp.455-787.
(Location: IWMI-HQ Call no: 333.91 G000 HER Record No: H039529)
4 Hewawasam, T. 2010. Effect of land use in the upper Mahaweli catchment area on erosion, landslides and siltation in hydropower reservoirs of Sri Lanka. Journal of National Science Foundation, 38(1)3-14.
(Location: IWMI HQ Call no: PER Record No: H043330)
(1.10 MB)
(Location: IWMI HQ Call no: 551.483 G744 MAH Record No: H043896)
(0.07 MB)
(Location: IWMI HQ Call no: 551.483 G744 RAN Record No: H046315)
(0.10 MB)
7 Eriyagama, Nishadi; Jinapala, K. 2014. Developing tools to link environmental flows science and its practice in Sri Lanka. In Castellarin, A.; Ceola, S.; Toth, E.; Montanari, A. (Eds.). Evolving water resources systems: understanding, predicting and managing water-society interactions: proceedings of the 6th IAHS-EGU International Symposium on Integrated Water Resources Management, Bologna, Italy, 4-6 June 2014. Wallingford, UK: International Association of Hydrological Sciences (IAHS). pp.204-209.
(Location: IWMI HQ Call no: e-copy only Record No: H046587)
(1.14 MB)
The term “Environmental Flows (EF)” may be defined as “the quantity, timing and quality of water flows required to sustain freshwater and estuarine ecosystems and the human livelihoods and well-being that depend on these ecosystems”. It may be regarded as “water for nature” or “environmental demand” similar to crop water requirements, industrial or domestic water demand. The practice of EF is still limited to a few developed countries such as Australia, South Africa and the UK. In many developing countries EF is rarely considered in water resources planning and is often deemed “unimportant.” Sri Lanka, being a developing country, is no exception to this general rule. Although the country underwent an extensive irrigation/water resources development phase during the 1960s through to the 1980s, the concept of EF was hardly considered. However, as Sri Lanka’s water resources are being exploited more and more for human usage, ecologists, water practitioners and policymakers alike have realized the importance of EF in sustaining not only freshwater and estuarine ecosystems, but also their services to humans. Hence estimation of EF has been made mandatory in environmental impact assessments (EIAs) of all large development projects involving river regulation/water abstraction. Considering EF is especially vital under the rapid urbanization and infrastructure development phase that dawned after the end of the war in the North and the East of the country in 2009. This paper details simple tools (including a software package which is under development) and methods that may be used for coarse scale estimation of EF at/near monitored locations on major rivers of Sri Lanka, along with example applications to two locations on River Mahaweli. It is hoped that these tools will help bridge the gap between EF science and its practice in Sri Lanka and other developing countries.
8 Ranaweera, R. A. D. 2014. Sri Lankawe villu thruna bim parisara paddhathiya. In Sinhalese. [Floodplain ecosystem in Sri Lanka]. Soba Parisara Prakashanaya, 23(2):1-3.
(Location: IWMI HQ Call no: P 8158 Record No: H047171)
(2.30 MB)
(Location: IWMI HQ Call no: e-copy only Record No: H047276)
(0.44 MB)
As Sri Lankan water resources are being increasingly exploited, particularly for hydropower and irrigation, ecologists, water practitioners and policymakers alike are realizing the importance of protecting these resources and setting environmental sustainability thresholds. Environmental Flows (EF) - the concept that helps define such thresholds – has now become an integral part of environmental impact assessments of river basin development projects. Considering EF is especially vital in the context of the accelerated infrastructure development program, launched after the end of the war in the north and the east of the country in 2009. This paper describes a simple, user-friendly software tool that facilitates quick, first-hand estimation of EF in Sri Lankan rivers. The tool uses ‘natural’ or ‘unregulated’ monthly flow time series, at any river location to construct a flow duration curve that is then modified depending on the desired condition of a river – an environmental management class – to generate an EF time series. The tool includes historical flow records from 158 gauged locations, but users may also feed in (observed/simulated) external data. The paper illustrates the application of the tool at two locations of existing/ planned infrastructure projects and discusses its usefulness as a policy tool.
(Location: IWMI HQ Call no: e-copy only Record No: H047400)
(1.35 MB) (1.35 MB)
Food, energy, and water are three critical resources for humanity. As climate variability, population growth, and lifestyle changes amplify the stress placed on each of the resources, the interrelationships among food, energy, and water systems become more pronounced. Political conflict, social and cultural norms, and spatial and temporal distribution of the resources add additional layers of complexity. It is in this context that the significance of understanding the impacts of water scarcity on the decisions around food and energy productions has emerged. Our work establishes tradeoff frontiers (TFs) as a method useful in illustrating the system-level tradeoffs between allocating water for food and water for energy. This paper illustrates how TFs can be used to (1) show how scarcity in water resources affects the tradeoffs between food and energy and (2) explore the political and social constraints that can move production away from what is feasible technically. We use Sri Lanka, a country where water resources are variable both in space and time and a country with relatively self-contained energy and agricultural sectors, as a microcosm of the food security, energy security, and water security trilemma. Nevertheless, our application of tradeoff frontiers is applicable widely to other systems.
(Location: IWMI HQ Call no: 333.91 G744 FER Record No: H047921)
(1.07 MB)
(Location: IWMI HQ Call no: 631.7 G744 ARI Record No: H049386)
(2.45 MB)
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