Your search found 19 records
1 Atputhanathan, C. S.; Gunawardena, E. R. N.; Rushton, K. R. 1991. Soil water dynamics related to waterlogging in a sloping catchment. Journal of Hydrology, 123(3-4):279-295.
Soil water relations ; Waterlogging ; Catchment areas ; Mathematical models ; Stream flow / Sri Lanka
(Location: IWMI-HQ Call no: PER Record No: H07581)
2 Gunawardena, E. R. N.. (Ed.) 1990. Irrigation and water resources: Proceedings of a symposium. Peradeniya, Sri Lanka: University of Peradeniya. Faculty of Agriculture. i, 213p.
(Location: IWMI-HQ Call no: 631.7 G744 GUN Record No: H09283)
3 Gunawardena, E. R. N.; Jeyabalasinkham, A.; Atputhanathan, C. S. 1990. The use of intercepter drainage techniques in alleviating water logging in irrigation systems. In Gunawardena, E. R. N. (Ed.) Irrigation and water resources: Proceedings of a symposium. Peradeniya, Sri Lanka: University of Peradeniya, Faculty of Agriculture. pp.123-138.
(Location: IWMI-HQ Call no: 631.7 G744 GUN Record No: H09293)
4 Gunawardena, E. R. N.. 1992. Improved water management for paddy irrigation: A case study from the Mahaweli System 'B' in Sri Lanka. In Murty, V. V. N.; Koga, K. (Eds.) Soil and water engineering for paddy field management: Proceedings of the International Workshop on Soil and Water Engineering for Paddy Field Management, 28-30 January 1992. Bangkok, Thailand: AIT. pp.307-316.
(Location: IWMI-HQ Call no: 631.7.2 G000 MUR Record No: H010874)
5 Gunawardena, E. R. N.. 1993. Constraints and solutions for effective water management for nonpaddy crops in paddy based irrigation systems. In HR Wallingford. Maintenance and operation of irrigation/drainage schemes for improved performance: papers presented to the Asian Regional Symposium held in Beijing, People's Republic of China, 24-27 May 1993. Wallingford, Oxfordshire, UK: HR Wallingford. pp.2:1-13.
(Location: IWMI HQ Call no: 631.7.1 G570 MAI Record No: H012674)
Among the constraints, lack of flexibility in the irrigation systems and inadequate drainage facilities seem to be the major ones which hinder farmers from switching over to Non Paddy Crops (NPCs). The water management interventions made since mid 1990 in a Mahaweli System B irrigation scheme, where crop diversification is promoted, have shown that technical solutions can be found to different water management problems, such as irrigation scheduling, water application, land development and drainage in isolation whenever they arise. However, the effectiveness of such an approach is questionable if the aforesaid problems are not addressed simultaneously. Hence, a more attractive water management "package" is proposed to promote the cultivation of NPCs throughout the year.
6 Gunawardena, E. R. N.. 1993. On-farm drainage in Mahaweli System B. MARD Project, Pimburattawa, report no.213. 28p.
Subsurface drainage ; Water management ; Monitoring ; Irrigation efficiency ; Water table ; Irrigated farming / Sri Lanka / Mahaweli Project / Pimburattawa
(Location: IWMI-HQ Call no: P 2907 Record No: H013333)
7 Palitha, W.; Gunawardena, E. R. N.. 1992. Development and testing of a soil moisture deficit indicator for irrigation scheduling. Tropical Agricultural Research, 4:327-338.
Irrigation scheduling ; Soil moisture ; Evapotranspiration ; Lysimetry ; Drainage ; Simulation ; Indicators / Sri Lanka
(Location: IWMI-HQ Call no: P 3628 Record No: H012639)
8 Thiruchelvam, S.; Abeygunawardena, P.; Gunawardena, E. R. N.. 1994. An economic analysis of ground-water use for agriculture in the Jaffna District. Tropical Agricultural Research, 6:113-122.
Groundwater extraction ; Recharge ; Water use ; Crop production ; Irrigation requirements ; Mathematical models ; Linear programming ; Optimization ; Economic analysis / Sri Lanka / Jaffna District / Valigamam / Nallur / Keerimalai / Tholpuram / Puttur / Uduvil
(Location: IWMI-HQ Call no: P 4593 Record No: H021414)
9 Gunawardena, E. R. N.; Rajapakshe, U.; Nandasena, K. A.; Rosier, P. T. W. 1998. Water quality issues in the uplands of Sri Lanka. In Gunasena, H. P. M. (Ed.). Proceedings of the Final Workshop, University of Peradeniya - Oxford Forestry Institute Link Project, July 1998. Peradeniya, Sri Lanka: University of Peradeniya. pp.37-44.
Water quality ; Rain ; Catchment areas ; Water pollution ; Watersheds ; Nitrogen ; Fertilizers ; Monitoring ; Crop production / Sri Lanka / Horton Plains / Black Pool
(Location: IWMI-HQ Call no: 634.9 G744 GUN Record No: H023211)
10 Gunawardena, E. R. N.. 2000. Assessing the impact of land use conversions on water demand: a prerequisite for policy formulation for water allocation. In Samad, M.; Wijesekera, N. T. S.; Birch, A. (Eds.). Status and future direction of water research in Sri Lanka: proceedings of the National Conference held at the BMICH, Colombo, Sri Lanka, 4-6 November, 1998. Colombo, Sri Lanka: International Water Management Institute (IWMI). pp.59-66.
Water demand ; Land use ; Water use ; Simulation models ; Assessment ; Management planning ; Water allocation / Sri Lanka
(Location: IWMI-HQ Call no: IWMI 333.91 G744 SAM Record No: H023564)
(0.43 MB)
11 Gunawardena, E. R. N.. 1999. Strategies for the improvement of participatory watershed management training. In Sri Lanka. Forest Department; Participatory Watershed Management Training in Asia (PWMTA). Proceedings of the Workshop on Watershed Management, Sri Lanka Forestry Institute, Nuwara Eliya, Sri Lanka, 24-25 April 1997. Battaramulla, Sri Lanka: Forest Department. pp.9-20.
Watershed management ; Training courses ; Education ; Participatory management ; Farmer participation / Sri Lanka
(Location: IWMI HQ Call no: 333.91 G744 SRI Record No: H025389)
12 Navaratne, W. M. U.; Gunawardena, E. R. N.. 1999. Verification of design parameters for operational studies of minor tanks in the dryzone. In Peiris, S. E. (Ed.), Tropical agricultural research. Vol.11, 1999. Peradeniya, Sri Lanka: PGIA. pp.1-18.
Tank irrigation ; Water potential ; Rehabilitation ; Water balance ; Flow discharge ; Rain ; Evaporation ; Percolation ; Seepage ; Water storage ; Flumes ; Water measurement ; Water loss ; Water availability ; Irrigation water / Sri Lanka / Anuradhapura District / Ulankulama / Meegassagama
(Location: IWMI-HQ Call no: 630.72 G744 PEI Record No: H026311)
13 Jayakody, B. V. Priyantha L.; Mowjood, M. I. M.; Gunawardena, E. R. N.. 2004. Modifying and testing of a cascade water balance model using a mini cascade system with two tanks. Tropical Agricultural Research, 16:159-170.
Tanks ; Water balance ; Simulation models ; Rain ; Runoff ; Evaporation ; Water delivery ; Irrigation water ; Seepage / Sri Lanka / Kurunegala District / Nawagaththegama / Maduragama / Karambewewa / Kala Oya River Basin
(Location: IWMI-HQ Call no: IWMI 631.7.1 G744 JAY Record No: H036243)
14 Gunawardena, E. R. N.. 2001? Pollution of water resources in Sri Lanka with special reference to agricultural pollution. In University of Peradeniya. Postgraduate Institute of Agriculture (PGIA). Silver Jubilee commemorative volume, Postgraduate Institute of Agriculture, University of Peradeniya, 1975-2000. Peradeniya, Sri Lanka: University of Peradeniya. PGIA. pp.116-126.
Water pollution ; Irrigation water ; Water resources ; Water quality ; Fertilizers ; Farm size ; Rain-fed farming ; Irrigated farming ; Vegetables ; Soil properties / Sri Lanka / Nuwara Eliya / Black Pool / Pattipola / Jaffna / Killinochchi / Kalpitiya / Kotmale Reservoir
(Location: IWMI-HQ Call no: 378.155 G744 UNI Record No: H038585)
(0.69 MB)
15 Dilhani, K. M.; Gunawardena, E. R. N.. 2006. Training need assessment in integrated water resources management (IWRM) of farmers: a case study from two irrigation schemes. 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.165-170.
Water resource management ; Farmers ; Training needs assessment ; Irrigation systems ; Case studies ; Farmers attitudes ; Water allocation / Sri Lanka / Hambantota / Lunugamwehera Major Irrigation Scheme / Padawwewa Minor Irrigation Scheme / Weerawila
(Location: IWMI HQ Call no: 631.7 G744 DAY Record No: H040732)
16 Gunawardena, E. R. N.. 2013. Sustainable water resource management in Sri Lanka: status at present and strategies for future. SOBA Environmental Magazine, 21(1- Special magazine published for Rio+20 Summit):71-85.
Water resources ; Water management ; Sustainable development ; Water demand ; Corporate culture / Sri Lanka
(Location: IWMI HQ Call no: P 8138 Record No: H046090)
17 Gunawardena, E. R. N.. 1998. Impacts of land use changes in reservoir catchments on runoff generation: measurements and modeling. Hydrological and Watershed Management Studies of the SCOR Project in the Huruluwewa Watershed. Colombo, Sri Lanka: International Irrigation Management Institute (IIMI). SCOR Project. 29p.
Land use ; Runoff ; Reservoirs ; Catchment areas ; Hydrology ; Watersheds ; Water balance ; Water level ; Water storage ; Water use ; Rain ; Evaporation ; Evapotranspiration ; Tanks ; Soil moisture ; Measurement ; Models ; Irrigated farming ; Rice ; Sustainability / Sri Lanka / Huruluwewa watershed / Puwakpitiya tank
(Location: IWMI HQ Call no: IWMI Record No: H046181)
18 Wijekoon, W. M. S. M.; Gunawardena, E. R. N.; Aheeyar, Mohamed M. M. 2016. Institutional reforms in minor (village tank) irrigation sector of Sri Lanka towards sustainable development. In Sri Lanka. University of Peradeniya. 7th International Conference on Sustainable Built Environment. Proceedings of the Sessions on Recycling Waste Management and Sustainable Water Management, Kandy, Sri Lanka, 16-18 December 2016. Peradeniya, Sri Lanka: University of Peradeniya. pp.75-83.
Institutional reform ; Villages ; Tank irrigation ; Sustainable development ; Small scale systems ; Ancestral technology ; Irrigation systems ; Irrigation management ; Irrigation water ; Stakeholders ; Authority ; State intervention ; Community management ; Cultivation / Sri Lanka
(Location: IWMI HQ Call no: e-copy only Record No: H048030)
This paper reviews the institutional reforms taken place in minor irrigation systems in Sri Lanka by contrasting those observed during pre-colonial and colonial periods with those after the independence. Formal or informal institutions have governed the operation and performance of the minor irrigation systems with continuous change of authority. While the earlier reforms focused on the irrigation sector with quicker benefits and lower political risks, recent reforms have covered macro institutions, where the benefits are gradual with high political risks. In ancient irrigation system management, decision making and implementation were taken by communities themselves under the feudal system of “Rajakariya” ensuring sustainability and maintaining village ecosystem. With the abolishing of “Rajakariya” system after the arrival of British rulers, the authority was shifted from the community to the government along with the trend of irrigation system management towards centralization and bureaucracy. After independence, though the minor irrigation system management was the responsibility of beneficiary farmers, the authority of the systems was continuously changed between different government agencies. Now, minor irrigation systems are governed by the Department of Agrarian Development and/ or Provincial councils towards sustainability goals while emphasizing the different stakeholder involvement through enforcement of formal and informal rules and procedures. The government continues the commitment to reform because it provides evidence for the political and economic stability, tactical benefits, timely consideration of stakeholders’ perception and information towards the required change.
19 Wijekoon, W. M. S. M.; Gunawardena, E. R. N.; Aheeyar, Mohamed M. M. 2018. Resilience of farmers at water shortage situations in minor irrigation systems: a case study in Kurunegala District, Sri Lanka. Tropical Agricultural Research, 29(4):242-257.
Water shortage ; Water scarcity ; Farmers ; Small scale systems ; Irrigation systems ; Communities ; Risk management ; Living standards ; Farming systems ; Tanks ; Socioeconomic environment ; Case studies / Sri Lanka / Kurunegala District
(Location: IWMI HQ Call no: e-copy only Record No: H048927)
https://www.pgia.ac.lk/files/Annual_congress/journel/v29/Journal-No%204/Papers/1-24-WMSM%20Wijekoon%20R1%20(1)-OK.pdf
https://vlibrary.iwmi.org/pdf/H048927.pdf
https://vlibrary.iwmi.org/pdf/H048927.pdf
(872 KB)
Farmers in Minor Irrigation Systems (MIS) experience many difficulties due to severe seasonal or year-round absolute water scarcity that affects their livelihoods. In order to address this problem, the resilience of the vulnerable communities needs to be enhanced through smart investments and appropriate adaptation strategies. Since there is no well-established method for assessing the resilience of the farmers in MIS, this study was aimed to develop a framework and prospective methodology to assess resilience and factors determining the resilience to shocks and stresses of MIS. A structured questionnaire survey was carried out among 188 households belong to eight farmer organizations under 16 MIS located in three Agrarian Service Divisions in the IL3 agro-ecological region in Kurunegala District. The resilience of farming was measured using adaptive capacity or the risk management strategies used at household levels related to farming practices using 20 indicators. Analysis of factors was performed with the principle component method and rotated (from Varimax with Kaiser Normalization technique) factor loadings were extracted to compute resilience index. Using the empirical equation derived from the study, the resilience of MIS was quantitatively determined. The results showed that there is an adequate space to enhance the resilience of farming in MIS by introducing and adapting various risk management strategies. It appears that capacity of the tank, accessibility of services and the trust of farmers both on farmer organizations and the agency officials are some of the key factors which govern the resilience of farming in MIS.
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