Your search found 29 records
1 Sri Lanka. Ceylon Electricity Board. Generation Planning Branch. Transmission Division. 1999. Long term generation expansion plan, 1999-2013. Colombo, Sri Lanka: CEB. v.p.
Electricity supplies ; Electric power demand ; Hydroelectric schemes ; National planning ; Simulation models ; Energy ; Costs ; Fuels ; Financing ; Environmental effects ; Air pollution ; River basins / Sri Lanka / Samanalawewa / Laxapana / Mahaweli Project / Kotmale Project / Victoria Project / Maduru Oya Project / Kelani River Basin / Walawe River Basin / Gin Ganga Project / Uma Oya Project / Moragolla Project / Trincomalee / Puttalam
(Location: IWMI-HQ Call no: 351.8722 G744 SRI Record No: H026510)
2 Jayaweera, U. 2000. Interim report on alluvial aquifer studies at lower part of the Walawe River Basin. Unpublished report. Treasury grant studies. 13p.
(Location: IWMI-HQ Call no: P 6256 Record No: H031408)
3 Sri Lanka. Mahaweli Authority of Sri Lanka; Japanese Bank for International Cooperation (JBIC) 2000. Special assistance for project implementation (SAPI) for Walawe Left Bank Irrigation Upgrading and Extension Project: Inception report. Unpublished report. 13p.
River basin development ; Development projects ; Irrigation programs ; Reservoirs ; Project design / Sri Lanka / Walawe River Basin
(Location: IWMI-HQ Call no: P 6262 Record No: H031414)
4 Mahaweli Authority of Sri Lanka; Nippon Koei Co. Ltd. 1998. Walawe Left Bank Irrigation Upgrading and Extension Project (Phase 2, SL – P48): project features. Draft. Colombo, Sri Lanka: Mahaweli Authority of Sri Lanka. 14p.
(Location: IWMI HQ Call no: P 8058 Record No: H031416)
5 Munasingha, N. T. K. 2003. Development of irrigation schemes in Walawe River Basin. In Kamaladasa, B. (Ed.), Water for people and nature: Sanmugam Arumugam commemoration volume. Ratmalana, Sri Lanka: Lanka Water Heritage. pp.83-88.
River basin development ; Irrigation programs ; Dams ; Construction / Sri Lanka / Walawe River Basin / Uda Walawe Dam
(Location: IWMI-HQ Call no: 631.7.8 G744 KAM Record No: H033160)
6 Molle, F.; Jayakody, P.; de Silva, S. 2003. Anicut systems in Sri Lanka: the case of the upper Walawe River Basin [Sri Lanka]. Colombo, Sri Lanka: International Water Management Institute (IWMI). iii, 24p. (IWMI Working Paper 061) [doi: https://doi.org/10.3910/2009.188]
Water resources ; Tanks ; Water use ; River basins ; Hydrology ; Irrigation systems ; Water shortage ; Crops ; Domestic water ; Fuelwood ; Cultivation ; Deforestation ; Water supply ; Economic development ; Water management ; Institutions ; Land reform / Sri Lanka / Walawe River Basin
(Location: IWMI-HQ Call no: IWMI 631.7.8 G744 MOL Record No: H033571)
(661 KB)
This exploratory study was designed to capture the main features of agrarian change in the upper part of the basin that depends mostly on anicuts. These anicuts amount to 59 percent of the total basin anicuts in terms of numbers, but to only 43 percent in terms of irrigated area. They are generally very old (the history of some of them goes back to 2000 years; see below) and obviously, many changes have occurred during this time. The study does not allow the reconstitution of all past transformations but offers some insight on recent changes: changes in population pressure over resources and changes in hydrology, crop choice, livelihoods and collective action. The analysis is based on exploratory surveys carried out by the authors and by students of the University of Sabaragamuwa and is not a detailed or in-depth investigation of agricultural systems in the Upper Walawe basin. However, it provides a useful outline of the situation in this part of the basin.
7 Nandalal, K. D. W.; Sakthivadivel, R. 2003. Availability, use and productivity of water in Walawe River Basin. Engineer, 36(3):30-38.
River basins ; Catchment areas ; Water availability ; Water use ; Productivity ; Water balance / Sri Lanka / Walawe River Basin
(Location: IWMI-HQ Call no: PER Record No: H033962)
(0.61 MB)
8 van der Hoek, W.; Ekanayake, L.; Rajasooriyar, L.; Karunaratne, R. 2003. Source of drinking water and other risk factors for dental fluorosis in Sri Lanka. International Journal of Environmental Health Research, 13(3):285-293.
Domestic water ; Risks ; Water quality ; Wells ; Irrigation canals ; Tube wells ; Public health ; Diseases / Sri Lanka / Walawe River Basin
(Location: IWMI-HQ Call no: IWMI 628.1 G744 VAN Record No: H034452)
9 Weragala, Neelanga; Smakhtin, Vladimir. 2004. Simulating hydrological alterations in the conditions of limited data: lessons from the Walawe River Basin in Sri Lanka. In Herath, S.; Pathirana, A.; Weerakoon, S. B. (Eds.). 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.1. Colombo, Sri Lanka: National Water Resources Secretariat. pp.251-259.
River basins ; Stream flow ; Hydrology ; Simulation models ; Soil water ; Evaporation ; Assessment ; Surface runoff ; Land use ; Percolation / Sri Lanka / Walawe River Basin / Thimbolketiya Catchment / Rakwana Oya
(Location: IWMI-HQ Call no: IWMI 574.526323 G744 WER, 333.91 G000 HER Record No: H035896)
10 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)
11 Floch, P. 2005. Water user associations as means of preventing and dealing with conflict: A perspective on irrigation-induced conflicts. M.Sc. Thesis submitted to the University of Natural Resources and Applied Life Sciences, Vienna, in partial fulfillment of the requirements for the degree of ‘Diplomingenieur’ ix, 103p.
Water user associations ; Farmers’ associations ; Conflict ; Irrigation programs ; Irrigation canals ; Organizations ; Water requirements ; Water demand ; Water delivery ; Water availability ; Domestic water / Sri Lanka / Walawe River Basin / Uda Walawe Irrigation System / Manamperigama Branch Canal / Kachchigala Subsystem
(Location: IWMI-HQ Call no: D 631.7.3 G744 FLO Record No: H036912)
12 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.
13 Smakhtin, Vladimir; Weragala, Neelanga. 2005. An assessment of hydrology and environmental flows in the Walawe River Basin, Sri Lanka. Colombo, Sri Lanka: International Water Management Institute (IWMI) v, 13p. (IWMI Working Paper 103) [doi: https://doi.org/10.3910/2009.278]
River basins ; Hydrology ; Stream flow ; Environmental effects ; Reservoirs ; Precipitation / Sri Lanka / Walawe River Basin
(Location: IWMI-HQ Call no: IWMI 551.483 G744 SMA Record No: H038045)
(736 KB)
14 Ranjan, S. P. 2005. Assessment of groundwater vulnerability in Walawe River Basin, Sri Lanka. Engineer, 38(1):25-31.
(Location: IWMI-HQ Call no: PER Record No: H038531)
15 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)
16 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)
17 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)
18 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.
19 Mahaweli Authority of Sri Lanka; Asian Development Bank. 1984. Walawe Irrigation Rehabilitation and Improvement Project. Final report. Volume II, Annexes. Unpublished report by SOGREAH Consulting Engineers, Grenoble, France. v.p.
Irrigation programs ; Rehabilitation ; Soil properties ; Land use ; Farming systems ; Rice ; Paddy fields ; Tillage ; Cropping systems ; Irrigation requirements ; Water supply ; Dams ; Reservoirs ; Operations ; Maintenance ; Irrigation canals ; Design ; Construction ; Farmers associations ; Participatory management ; Farmer participation ; Environmental effects ; Economic evaluation / Sri Lanka / Walawe River Basin / Chandrika Wewa / Kirindi Oya / Gal Oya / Minipe Scheme / Uda Walawe Reservoir
(Location: IWMI-HQ Call no: 631.7.7 G744 MAH Record No: H041400)
20 Jayakody, Priyantha; Rajah, Mohamed; Gunasinghe, Sarath. 2009. Assessment of sedimentation of Uda Walawe Reservoir in Walawe River Basin. In Dayawansa, N. D. K.; Pathmarajah, S.; Mowjood, M. I. M. (Eds.). Symposium Proceedings of the Water Professionals' Day, Water Resources Research in Sri Lanka, held at the University of Peradeniya, Peradeniya, Sri Lanka, 1 October 2009. Peradeniya, Sri Lanka: Geo-Informatics Society of Sri Lanka (GISSL) pp.37-44.
River basins ; Reservoirs ; Sedimentation ; Assessment ; Remote sensing ; GIS / Sri Lanka / Walawe River Basin / Uda Walawe Reservoir
(Location: IWMI HQ Call no: e-copy only Record No: H042641)
(0.52 MB)
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