Your search found 32 records
1 Jayakody, Priyantha; Ariyarathne, Ranjith; Abayawardana, Sarath. (Eds.) 2004. Synthesis report of the RBMB Network Meeting, Peacock Beach Hotel, Hambantota, 20th May 2004. Colombo, Sri Lanka: International Water Management Institute (IWMI) 18p. (Ruhuna Benchmark Basin Proceedings no.2)
River basins ; Agricultural research ; Research institutes ; Water management ; Water allocation ; Water quality ; Catchment areas ; Environmental effects / Sri Lanka / Ruhuna Basin / Kirind Oya / Walawe Basin
(Location: IWMI-HQ Call no: IWMI 631.7 G744 JAY Record No: H035717)
2 Jayakody, Priyantha; Molle, Francois; Gamage, Champika. 2004. Growing pressure over land and water resources: transformations in the Belihuloya catchment. In De Silva, R. P. (Ed.), Proceedings of the “Water Professionals’ Day,” University of Peradeniya , Sri Lanka. 12p.
River basins ; Land resources ; Water resources ; Catchment areas ; History ; Agrarian reform ; Irrigation canals ; Rice ; Paddy fields ; Tomatoes ; Land use ; Conflict / Sri Lanka / Belihuloya Catchment
(Location: IWMI-HQ Call no: IWMI 333.91 G744 JAY Record No: H035894)
3 Somaratne, Pallewatte G.; Jayakody, Priyantha; Molle Francois; Jinapala, Kiribandage. 2005. Small tank cascade systems in the Walawe River Basin [Sri Lanka]. Colombo, Sri Lanka: International Water Management Institute (IWMI) iii, 43p. (IWMI Working Paper 092) [doi: https://doi.org/10.3910/2009.270]
River basins ; Tanks ; History ; Rehabilitation ; Intensive cropping ; Water use ; Social aspects ; Economic aspects ; Poverty ; Income ; Villages ; Farmers ; Land use ; Land tenure ; Fertilizers / Sri Lanka / Walawe River Basin
(Location: IWMI-HQ Call no: IWMI 631.7 G744 SOM Record No: H036745)
(807 KB)
4 Anputhas, Markandu; Ariyaratne, B. Ranjith; Gamage, Nilantha; Jayakody, Priyantha; Jinapala, Kiribandage; Somaratne, Pallewatte G.; Weligamage, Parakrama; Weragala, Neelanga; Wijerathna, Deeptha. 2005. Bringing Hambantota back to normal: a post-tsunami livelihoods needs assessment of Hambantota District in southern Sri Lanka. Colombo, Sri Lanka: International Water Management Institute (IWMI). ix, 59p.
Natural disasters ; Research methods ; Mapping ; Villages ; Income generation ; Statistics ; Irrigated farming ; Livestock ; Fisheries ; Economic aspects ; Rehabilitation / Sri Lanka / Hambantota
(Location: IWMI-HQ Call no: IWMI 363.348068 G744 ANP Record No: H036747)
(2.74 MB)
5 Molle, François; Jayakody, Priyantha; Ariyaratne, B. Ranjith; Somatilake, H. S. 2005. Balancing irrigation and hydropower: case study from southern Sri Lanka. Colombo, Sri Lanka: International Water Management Institute (IWMI). vi, 38p. (IWMI Research Report 094) [doi: https://doi.org/10.3910/2009.024]
Reservoirs ; Dams ; Hydroelectric schemes ; Economic analysis ; Canals ; Irrigation scheduling ; Cropping systems ; Case studies / Sri Lanka / Samanalawewa Reservoir / Kaltota Irrigation Scheme / Walawe River Basin / Puranagama Village / Ratnapura
(Location: IWMI-HQ Call no: IWMI 631.7.1 G744 MOL Record No: H037591)
(1.83MB)
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.
6 Jayakody, Priyantha; Somarathne, P. G. S. 2005. The implementation of the Tsunami Livelihood Restoration Project: Progress report 2005. Unpublished report. 4p.
Natural disasters ; Rehabilitation ; Living conditions ; Farmers’ associations / Sri Lanka / Hambantota District
(Location: IWMI-HQ Call no: IWMI 355.12 G744 JAY Record No: H038090)
(0.43 MB)
7 Raschid-Sally, Liqa; Tuan, D. D.; Jayakody, Priyantha. 2006. Impact of wastewater use on farm households in Nam Dinh, Vietnam. In Raschid-Sally, Liqa; Jayakody, Priyantha (Eds.). Proceedings of Workshop on Wastewater Reuse in Agriculture in Vietnam: Water Management, Environment and Human Health Aspects, Hanoi, Vietnam, 4 May 2006. In English and Vietnamese. Hanoi, Vietnam: Agriculture Publishing House; Hanoi, Vietnam: Center for Participatory Irrigation Management (CPIM) of Vietnam Institute for Water Resources Research; Hanoi, Vietnam: International Water Management Institute (IWMI). pp.156-162.
Wastewater ; Water reuse ; Irrigated farming ; Rice ; Yields ; Fertilizers ; Fish ; Women / Vietnam / Nam Dinh
(Location: IWMI-HQ Call no: IWMI 631.7.5 G784 RAS Record No: H038717)
8 Jayakody, Priyantha; Raschid-Sally, Liqa; Abayawardana, Sarath; Najim, M. M. M. 2006. Urban growth and wastewater agriculture: a study from Sri Lanka. In Fisher, J. (Ed.). Sustainable development of water resources, water supply and environmental sanitation: proceedings of the 32nd WEDC International Conference, Bandaranaike Memorial International Conference Hall, Colombo, Sri Lanka, 13 - 17 November 2006. Preprints. Leicestershire, UK: Water, Engineering and Development Centre (WEDC). pp.105-111.
Wastewater ; Water reuse ; Irrigated farming ; Rice ; Paddy fields ; Domestic water ; Urbanization ; Effluents ; Sewage ; Health hazards ; Surveys / Sri Lanka / Kurunegala / Kandy / Malwathu Oya / Anuradhapura / Kelani River
(Location: IWMI-HQ Call no: IWMI 631.7.5 G744 JAY, 333.91 G000 WAT Record No: H039718)
http://wedc.lboro.ac.uk/resources/conference/32/Jayakody.pdf
https://vlibrary.iwmi.org/pdf/H039718.pdf
https://vlibrary.iwmi.org/pdf/H039718.pdf
(0.40 MB) (408KB)
9 Jayakody, Priyantha; Molle, Francois. 2006. Paddy to hydropower: a conflict between uses: case study in Kaltota, Sri Lanka. In Hidroenergia 2006 - International Conference and Exhibition on Small Hydropower, Crieff, Scotland, 7-9 June 2006. 9p.
River basins ; Dams ; Hydroelectric schemes ; Irrigation programs ; Water requirements ; Canals ; Conflict / Sri Lanka / Kaltota Irrigation System / Walawe River Basin / Samanalawewa Reservoir / Katupath Oya Basin
(Location: IWMI-HQ Call no: IWMI 631.7 G744 JAY Record No: H039719)
10 Muthuwatta, Lal; Jayakody, Priyantha. 2006. Development and testing a spatially distributed hydrological model for meso-scale watershed: A case study from Hulanda Oya catchment Sri Lanka. In Dayawansa, N. D. K. (Ed.). Geo-Informatics for Environmental Conservation and Management: Proceedings of the Third National Symposium on Geo-Informatics, 25 August 2006. Peradeniya, Sri Lanka: Geo-Informatics Society of Sri Lanka (GISSL) pp.59-71.
Watersheds ; Catchment areas ; Hydrology ; Simulation models ; GIS / Sri Lanka / Walawe basin / Hulanda Oya Catchment / Chandrika Wewa
(Location: IWMI-HQ Call no: 526.0285 G570 DAY Record No: H039756)
(0.76 MB)
11 Raschid-Sally, Liqa; Jayakody, Priyantha. (Eds.) 2006. Proceedings of Workshop on Wastewater Reuse in Agriculture in Vietnam: Water Management, Environment and Human Health Aspects, Hanoi, Vietnam, 4 May 2006. In English and Vietnamese. Hanoi, Vietnam: Agriculture Publishing House; Hanoi, Vietnam: Center for Participatory Irrigation Management (CPIM) of Vietnam Institute for Water Resources Research; Hanoi, Vietnam: International Water Management Institute (IWMI). 199p.
Water reuse ; Wastewater ; Irrigated farming ; Water quality ; Rice ; Water balance ; Paddy fields ; Public health ; Risks ; Helminths ; Farmers / Vietnam
(Location: IWMI HQ Call no: IWMI 631.7.5 G784 RAS Record No: H039982)
(13.61 MB)
12 Jayakody, Priyantha; Somaratne, Pallewatte G. 2006. Evolution of the anicut system: A case from Hulanda Oya Sub Catchment. In Water Resources Research in Sri Lanka: A Symposium. Proceedings of the Water Professional’s Day, held at the Postgraduate Institute of Agriculture (PGIA), University of Peradeniya, Peradeniya, Sri Lanka, 01 October 2006. pp.55-66.
Tanks ; River basins ; Streams ; Catchment areas ; Land ownership ; Land tenure ; Irrigated farming ; Rice / Sri Lanka / Hulanda Oya Sub Catchment / Walawe River Basin / Chandrikawewa
(Location: IWMI HQ Call no: IWMI 631.7 G744 JAY Record No: H039755)
13 Jayakody, Priyantha; Molle, Francois; Najim, M. M. M. 2005. Deviation of planned water demand from actual on farm water usage and suggestions for improvements: A case study from Uda Walawe Irrigation Scheme, Sri Lanka. In Galagedara, L. W. (Ed.). Water resources research in Sri Lanka: Symposium Proceedings of the Water Professional’s Day 2005. Peradeniya, Sri Lanka: PGIA. pp.1-14.
Irrigation programs ; Irrigation requirements ; Water requirements ; Water use ; Water demand ; Irrigation canals ; Flumes ; Water allocation ; Planning ; Irrigation scheduling ; Rice ; Bananas ; Irrigation management / Sri Lanka / Uda Walawe Irrigation Scheme
(Location: IWMI HQ Call no: IWMI 631.7 G744 GAL Record No: H040701)
14 Jayakody, Priyantha; Somaratne, P. G.; Jinapala, K. 2005. Evolution of small tank cascade systems in Walawe Basin. In Galagedara, L. W. (Ed.). Water resources research in Sri Lanka: Symposium Proceedings of the Water Professional’s Day 2005. Peradeniya, Sri Lanka: PGIA. pp.85-101.
Tanks ; Water use ; Land tenure ; Farmers ; History ; Operations ; Maintenance / Sri Lanka / Walawe Basin
(Location: IWMI HQ Call no: IWMI 631.7 G744 GAL Record No: H040708)
15 Jayakody, Priyantha; Somaratne, P. G. 2006. Evolution of the anicut systems: a case from Hulanda Oya sub catchment. In Dayawansa, N. D. K. (Ed.). Water resources research in Sri Lanka: symposium proceedings of the Water Professional’s Day 2006, Postgraduate Institute of Agriculture, University of Peradeniya, Sri Lanka, 1 October 2006. Peradeniya, Sri Lanka: University of Peradeniya. Postgraduate Institute of Agriculture (PGIA). pp.55-66.
Irrigation programs ; River basins ; Irrigated farming ; Farmers ; Conflict ; Water scarcity / Sri Lanka / Walawe River BAsin / Hulanda Oya Sub Catchment / Diyapota Ela Stream / Kithalabokka Stream
(Location: IWMI HQ Call no: 631.7 G744 DAY Record No: H040724)
16 Molle, Francois; Jayakody, Priyantha; Ariyaratne, B. Ranjith; Somatilake, H. S. 2008. Irrigation versus hydropower: sectoral conflicts in southern Sri Lanka. Water Policy, 10(Suppl.1):37-50. [doi: https://doi.org/10.2166/wp.2008.051]
Water power ; Conflict ; Hydroelectric Schemes ; Irrigation water ; River basins ; Dams ; Reservoirs ; Irrigation scheduling ; Water rights ; Economic evaluation / Sri Lanka / Walawe River Basin / Samanalawewa Reservoir
(Location: IWMI HQ Call no: IWMI 631.7 G744 MOL, PER Record No: H040818)
Although hydropower does not directly consume water, its generation frequently conflicts with other uses, notably irrigation, because its release schedule does not always correspond to the timing of water use by other activities. This article analyses a case from the Walawe river basin, Sri Lanka, where economic efficiency can be raised by reducing releases from the dam for irrigation for the benefit of hydropower generation. The tradeoff is analysed in financial and managerial terms and different options for reducing irrigation diversions are reviewed. Although the high level of current diversions for irrigation warrants the possibility of improvement in management, it is shown that finding ways to reduce supply faces technical and socio-political constraints that make the realization of economic benefits costly and difficult.
17 Wijerathna, Deeptha; Jayakody, Priyantha. 2007. High tank dual canal system: an innovative approach of water allocation for a water scarce region. Paper presented at the South Asia Water Conference on Water Access and Conflicts: implications for governance in South Asia, Chennai, India, 21-23 March 2007. 24p.
Irrigation programs ; Tanks ; Irrigation canals ; Design ; Water allocation ; Water distribution ; Paddy fields ; Rice ; Sugarcane ; Water requirements ; Water conservation ; Cropping systems ; Shifting cultivation ; Income distribution / Sri Lanka / Uda Walawe Irrigation Project / Rathnapura District / Moneragala District / Hambantota District / Mayurapura / Sooriyawewa
(Location: IWMI HQ Call no: IWMI 631.7.1 G744 WIJ Record No: H040864)
This paper discusses the importance of equitable water allocation for all farmers of an irrigation system. It addresses the potential and relevance of high tank dual canal systems for equitable allocation of scarce land and water resources to alleviate poverty. Recent irrigation settlement projects in Sri Lanka have significantly contributed to poverty alleviation. Yet, a considerable number of farm households in these settings face transient or chronic poverty while some others are well off. Inequities of resource allocation and inefficiencies in resource use are two main reasons for this. In a given agricultural settlement potential for crop production is not unique to all parts of the land. It varies with soil conditions, terrain, elevation and ease of obtaining irrigation water. Availability of water for tail-enders depends on total stock of water available in the system as well as usage of head-enders. Although all farmers would prefer land at the head end, with the increasing pressure on land more and more people have had to be settled at the tail end. Further, lands that were once abandoned due to low productivity, difficulties in irrigation etc have also had to be used by utilizing alternative technologies. Another problem that features in the Sri Lankan contest is almost all farmers have a tendency to cultivate staple food of rice in their fields. Rice needs huge amounts of water compared to other crops and when unsuitable lands are used, it results in huge losses. Uda Walawe Irrigation project in Sri Lanka is a water-short irrigation system which has hardly enough water to irrigate its total command area. This has forced downstream developers to come up with innovative ways of water allocation to ensure equitable amounts of water for all farmers in the command area. The high-tank dual canal system introduced under the extension and rehabilitation project of the Walawe left bank is one novel approach which attempts to maximize resource use with equitable distribution. It helps to solve two basic resource based conflicts; demand for water and fertile land. Tanks with this system consists of four main canals; two each from left and right banks, instead of only two main canals in conventional system. Two canals; one from each bank is allocated to provide water for paddy lands while the other two canals provide water for non paddy crops. The quantity of water release and the interval of water release are low for the non paddy crops. Firstly, this new system reduces conflicts among farmers within the command area for water and land allocation. Secondly, planned and careful water use of these farmer groups release some water for some other water uses of the tail end of the main irrigation system. This paper analyzes the potential of new approach in saving water and providing equitable allocation of land and water resources. It estimates level of poverty with and without new technique to analyze the relevance of the approach in reducing poverty with equitable income distribution.
18 Nishshanka, R.; de Silva, Shyamalie; Clemett, Alexandra; Dissanayake, Priyanka; Jayakody, Priyantha; Jayaweera, P. 2006. Background report: Kurunegala, Sri Lanka. Unpublished background report, produced as part of the Wastewater Agriculture and Sanitation For Poverty Alleviation in Asia (WASPA Asia) Project. 33p. + annexes. (WASPA Asia Project Report 1)
Development projects ; Water resources ; Social aspects ; Population ; Households ; Income ; Water supply ; Sanitation ; Wastewater ; Water quality ; Public health ; Waterborne diseases ; Land use ; Land tenure ; Legislation / Sri Lanka / Kurunegala / Wan Ela / Beu Ela
(Location: IWMI HQ Call no: IWMI 363.6 G744 NIS Record No: H041009)
(0.47 MB)
This project is funded by the European Commission under its Asia Pro Eco II Program. It is undertaken by the International Water Management Institute (IWMI), Sri Lanka; COSI, Sri Lanka; the International Water and Sanitation Centre (IRC), the Netherlands; NGO Forum for Drinking Water Supply and Sanitation, Bangladesh; and the Stockholm Environment Institute (SEI), Sweden. The project pilot cities are Rajshahi City in Bangladesh and Kurunegala City in Sri Lanka.
19 Dissanayake, Priyanka; Clemett, Alexandra; Jayakody, Priyantha; Amerasinghe, Priyanie. 2007. Report on water quality survey and pollution in Kurunegala, Sri Lanka. Unpublished project report produced as part of the Wastewater Agriculture and Sanitation For Poverty Alleviation in Asia (WASPA Asia) 32p. + annexes. (WASPA Asia Project Report 6)
Water resources ; Water pollution ; Water quality ; Monitoring ; Electrical conductivity ; Ph ; Nitrogen ; Iron ; Boron ; Heavy metals ; Coliform bacteria / Sri Lanka / Kurunegala / Wan Ela / Beu Ela
(Location: IWMI HQ Call no: IWMI 363.6 G744 DIS Record No: H041013)
(0.57 MB)
This project is funded by the European Commission under its Asia Pro Eco II Program. It is undertaken by the International Water Management Institute (IWMI), Sri Lanka; COSI, Sri Lanka; the International Water and Sanitation Centre (IRC), the Netherlands; NGO Forum for Drinking Water Supply and Sanitation, Bangladesh; and the Stockholm Environment Institute (SEI), Sweden. The project pilot cities are Rajshahi City in Bangladesh and Kurunegala City in Sri Lanka.
20 Jayakody, Priyantha; Gunawardana, I.; Guneratne, S.; Clemett, Alexandra; Dissanayake, Priyanka. 2007. Wastewater agriculture in Kurunegala City, Sri Lanka. Unpublished project report produced as part of the Wastewater Agriculture and Sanitation For Poverty Alleviation in Asia (WASPA Asia) 22p. + annexes. (WASPA Asia Project Report 8)
Wastewater irrigation ; Irrigation canals ; Rivers ; Urban agriculture ; Farmers associations ; Rain ; Soil properties ; Rice ; Crop management ; Fertilizers ; Paddy fields / Sri Lanka / Kurunegala City / Beu Ela / Wan Ela
(Location: IWMI HQ Call no: IWMI 631.7.5 G744 JAY Record No: H041019)
(1.51 MB)
This project is funded by the European Commission under its Asia Pro Eco II Program. It is undertaken by the International Water Management Institute (IWMI), Sri Lanka; COSI, Sri Lanka; the International Water and Sanitation Centre (IRC), the Netherlands; NGO Forum for Drinking Water Supply and Sanitation, Bangladesh; and the Stockholm Environment Institute (SEI), Sweden. The project pilot cities are Rajshahi City in Bangladesh and Kurunegala City in Sri Lanka.
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