Your search found 15 records
1 Godaliyadda, G. G. A.. 1992. Irrigation-water management for sustainable agricultural development in Sri Lanka. In FAO. Regional Office for Asia and the Pacific (RAPA); Japan International Cooperation Agency (JICA). Irrigation-water management for sustainable agricultural development: report of the Expert Consultation of the Asian Network on Irrigation-Water Management, Bangkok, Thailand, 25-28 August 1992. Bangkok, Thailand: Japan International Cooperation Agency (JICA); FAO. RAPA. pp.163-172. (RAPA Publication 1992/24)
Irrigation management ; Water management ; Agricultural development ; Sustainable agriculture ; Evaluation / Sri Lanka
(Location: IWMI HQ Call no: 631.7.8 G570 FAO Record No: H012836)
2 Godaliyadda, G. G. A.. 1993. Computer applications in irrigation system operation: Case study from Galoya. Jalaurudi, 2(1):11-20.
Computer techniques ; Computer models ; Irrigation operation ; Irrigation systems ; Case studies / Sri Lanka / Gal Oya Project
(Location: IWMI-HQ Call no: P 2784 Record No: H012859)
Use of computers for Irrigation System Operation is increasingly gaining momentum. The first attempt by the Irrigation Department to use micro-computers for the purpose of system operation and water management was establishing a Computer Centre at Irrigation Engineer's Office, Ampara in 1984, with Radio Shack Model-16 B micro-computer. Since then, several computer models have been developed for operation of systems to assist system operators in scheduling water release and in recording data for analyzing system performance.
3 Godaliyadda, G. G. A.. 1994. The use of computer-operated models as decision-support tools in operation and management of irrigation systems: Sri Lankan experience, Gal Oya System. In Haq, K. A.; Rey, J.; Sakthivadivel, R.; Samarasekera, B. M. S. (Eds.), Use of computer-operated models as decision-support tools in operation and management of irrigation systems: Sri Lankan experience - Proceedings of the Workshop on the Use of Computer-Operated Models as Decision-Support Tools in Operation and Management of Irrigation Systems held in Galgamuwa, Sri Lanka from 15 to 16 July 1993. Colombo, Sri Lanka: IIMI. pp.11-12.
Computer models ; Computer software ; Decision support tools ; Irrigation management ; Irrigation operation ; Irrigation systems ; Irrigation scheduling ; Water requirements ; Water distribution ; Farmers' attitudes / Sri Lanka / Gal Oya Project
(Location: IWMI-HQ Call no: IIMI 631.7.1 G744 HAQ Record No: H015121)
4 Godaliyadda, G. G. A.. 1994. Improved irrigation/water management for sustainable agricultural development in Sri Lanka. In JICA; FAO. RAPA, Irrigation performance and evaluation for sustainable agricultural development: Report of The Expert Consultation of the Asian Network on Irrigation/Water Management, Bangkok, Thailand, 16-20 May 1994. Bangkok, Thailand: FAO. RAPA. pp.218-226.
Irrigation management ; Water management ; Sustainable agriculture ; Agricultural development ; Policy ; Constraints ; Training ; Monitoring ; Performance evaluation / Sri Lanka
(Location: IWMI-HQ Call no: 631.7.8 G570 JIC Record No: H015215)
5 Godaliyadda, G. G. A.; Renault, D. 1997. Typology and partition for irrigation system operation application in Sri Lanka. In Renault, D. (Ed.). Modern techniques for manual operation of irrigation canals. Proceedings of the Fourth International ITIS [Information Techniques for Irrigation Systems] Network Meeting, Marrakech, Morocco, 25-27 April 1997. pp.40-52.
Irrigation systems ; Irrigation operation ; Irrigation canals ; Canal regulation techniques / Sri Lanka
(Location: IWMI HQ Call no: IIMI 631.7.1 G000 REN Record No: H021918)
(0.24 MB) (0.78 MB)
6 Godaliyadda, G. G. A.; Renault, D. 1997. Typologie des systemes et gestion des canaux d'irrigation application au Sri Lanka. In French. [Typology and partition for irrigation system operation application in Sri Lanka]. In Renault, D. (Ed.). Modern techniques for manual operation of irrigation canals. Proceedings of the Fourth International ITIS [Information Techniques for Irrigation Systems] Network Meeting, Marrakech, Morocco, 25-27 April 1997. pp.53-56.
Irrigation systems ; Irrigation operation ; Irrigation canals ; Canal regulation techniques / Sri Lanka
(Location: IWMI HQ Call no: IIMI 631.7.1 G000 REN Record No: H021919)
(0.18 MB)
7 Godaliyadda, G. G. A.; Renault, D.; Steenhuis, T. 1998. A typology analysis of irrigation system operations in Sri Lanka. Unpublished research paper. 16p.
Irrigation operation ; Irrigation canals ; Canal regulation techniques ; Rice ; Reservoirs / Sri Lanka
(Location: IWMI-HQ Call no: IIMI 631.7.1 G744 GOD Record No: H022634)
(0.66 MB)
8 Godaliyadda, G. G. A.; Renault, D.; Hemakumara, H. M.; Makin, I. W. 1999. Strategies to improve manual operation of irrigation systems in Sri Lanka. Irrigation and Drainage Systems, 13(1):33-54.
Irrigation operation ; Performance evaluation ; Irrigation canals ; Canal regulation techniques ; Simulation / Sri Lanka / Kirindi Oya
(Location: IWMI-HQ Call no: IIMI 631.7.1 G744 GOD, PER Record No: H022633)
(1.33 MB)
As unpublished report, 1998. 23p.
9 Renault, D.; Godaliyadda, G. G. A.. 1999. Generic typology for irrigation systems operation. Colombo, Sri Lanka: International Water Management Institute (IWMI). v, 22p. (IWMI Research Report 029) [doi: https://doi.org/10.3910/2009.033]
Irrigation management ; Irrigation systems ; Water use efficiency ; Canals ; Operations ; Typology ; Water delivery ; Water distribution ; Water conveyance ; Water storage ; Irrigation effects ; Environmental effects ; Gravity flow ; Hydraulics ; Constraints ; Water supply ; Networks ; Case studies / Sri Lanka
(Location: IWMI-HQ Call no: IIMI 631.7.1 G744 REN Record No: H024200)
(211KB)
This report presents a methodology for identifying the main characteristic features (constraints and opportunities) of gravity-fed irrigation systems, which influence management and operation of the system for the purpose of water delivery. It presents the development of a generic typology for improving irrigation system operations. A case study of 64 irrigation systems in Sri Lanka is presented illustrating the practical application of the proposed typology.
10 Godaliyadda, G. G. A.; Mullegamgoda, K. R. P. M.; Alahakoon, A. M. U. B. 1999. Some experiences on modernization efforts in irrigation systems rehabilitation in Sri Lanka. In Renault, D. (Ed.). Modernization of irrigation system operations: proceedings of the Fifth International ITIS [Information Techniques for Irrigation Systems] Network Meeting, Aurangabad, Maharashtra, India, 28-30 October 1998. Meeting organized by International Water Management Institute (IWMI); Research Center for Agricultural and Environmental Engineering (Cemagref); FAO; Water and Land Management Institute Maharashtra (WALMI). [Later published by FAO in 1999] pp.129-133.
Modernization ; Rehabilitation ; Irrigation systems ; Tank irrigation / Sri Lanka / Gal Oya / Mahakanadarawa Irrigation system / Mahaweli Scheme
(Location: IWMI-HQ Call no: IWMI Record No: H024651)
(16625 bytes)
11 Godaliyadda, G. G. A.; Renault, D. 1999. Improved irrigation system operation through subsystem approach. In ICID, 17th Congress on Irrigation and Drainage, Granada, Spain, 1999: Water for Agriculture in the Next Millennium - Transactions, Vol.1A, Q.48: Irrigation under conditions of water scarcity; Q.48.1: Management of irrigation systems and strategies to optimize the use of irrigation water; 48.2: Techniques to promote water saving in irrigation. New Delhi, India: ICID. pp.67-83.
Irrigation systems ; Irrigation operation ; Reservoirs ; Recycling ; Irrigation programs ; Irrigation canals / Sri Lanka / Kirindi Oya / Old Ellegala
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI, IIMI 631.7.1 G744 GOD Record No: H025064)
(1.71 MB)
Frequently there is a gap between national guidelines for irrigation operations and field practices. National guidelines are often too general and imprecise for application to site specific conditions. Analysis of current national level recommendations in Sri Lanka supports these observations. A methodology is proposed to close this gap based on the analysis of the main characteristics affecting system operations. A generic typology for canal operation is proposed and applied for the operation of Major/Medium irrigation systems in Sri Lanka. The analysis shows that the schemes are homogeneous in terms of 'Water' characteristics. Systems are also homogeneous in their service objectives as described by the 'Consumer' characteristics of the typology. Considering the physical operational characteristics 'System & Structures', Sri Lankan systems are differentiated by the presence or absence of internal storage with respect to the 'Storage' criterion. The maximum partitioning of schemes is found at the 'Networks' level, where source of supply, Return-flows, canal topography, and Runoff criteria enable identification of characteristics with operational significance. A survey of 64 irrigation systems in Sri Lanka led to their classification into four main types. Irrigation systems can be divided using the same criteria as in the typology, in order to identify homogeneous subsystems for operation. An application of the subsystem approach is given for one particular project, and various considerations on strategies on how to improve the performance has been investigated. Improving normal operations produces limited results in terms of increasing the water management efficiency. Inversely volume controlled techniques aiming at, to properly manage positive fluctuations of flows present a high potential of improvements.
12 Godaliyadda, G. G. A.; Mullegamgoda, K. R. P. M.; Alahakoon, A. M. U. B. 1999. Some experiences on modernization in irrigation system rehabilitation in Sri Lanka. In FAO; International Water Management Institute (IWMI); Research Centre for Agriculture and Environmental Engineering (Cemagref); Water and Land Management Institute Maharashtra (WALMI). Modernization of irrigation system operations: proceedings of the Fifth International ITIS [Information Techniques for Irrigation Systems] Network Meeting, Aurangabad, Maharashtra, India, 28-30 October 1998. Bangkok, Thailand: FAO Regional Office for Asia and the Pacific. pp.151-156. (FAO RAP Publication 99/43)
Irrigation programs ; Modernization ; Rehabilitation ; Tank irrigation / Sri Lanka / Mahaweli Project / Mahakanadarawa / Gal Oya Project
(Location: IWMI HQ Call no: IWMI 631.7.7 G570 FAO Record No: H026206)
(16625 bytes)
13 Godaliyadda, G. G. A.. 1998. Typology for irrigation system operation, generic approach and application in Sri Lanka. Dissertation Presented to the Faculty of the Graduate School of Cornell University, for the Degree of Doctor of Philosophy. xvii, 243p.
Irrigation canals ; Flow control ; Hydrology ; Simulation models ; Canal regulation techniques ; Analysis ; Irrigation management ; Irrigation systems ; Paddy fields / Sri Lanka
(Location: IWMI-HQ Call no: D 631.7.1 G744 GOD Record No: H031946)
14 Godaliyadda, G. G. A.. 2003. A brief note on water management and physical rehabilitation of major irrigation schemes in Sri Lanka. In Kamaladasa, B. (Ed.), Water for people and nature: Sanmugam Arumugam commemoration volume. Ratmalana, Sri Lanka: Lanka Water Heritage. pp.165-168.
(Location: IWMI-HQ Call no: 631.7.8 G744 KAM Record No: H033167)
15 Weligamage, Parakrama; Godaliyadda, G. G. A.; Jinapala, K. (Eds.) 2010. Proceedings of the National Conference on Water, Food Security and Climate Change in Sri Lanka, BMICH, Colombo, Sri Lanka, 9-11 June 2009. Vol. 1. Irrigation for food security. Colombo, Sri Lanka: International Water Management Institute (IWMI). 160p. [doi: https://doi.org/10.3910/2010.210]
Food security ; Climate change ; River basins ; Water shortage ; Irrigated farming ; Water quality ; Tanks ; Aquatic plants ; Rice ; Food insecurity ; Water resource management ; Zero tillage ; Weed control ; Agroforestry ; Canals ; Surface runoff ; Remote sensing / Sri Lanka / Deduru Oya Basin / Anuradhapura District / Mi Oya River Basin / Inginimitiya Irrigation System / Yan Oya watershed / Aluth Divulwewa sub watershed
(Location: IWMI HQ Call no: IWMI 631.7 G744 WEL Record No: H042888)
(2.97 MB)
This is the first volume on the proceedings of the national conference on ‘Water for Food and Environment’, which was held from June 9–11, 2009 at the Bandaranaike Memorial International Conference Hall (BMICH). The volumes two and three have been produced as separate documents of this report series. In response to a call for abstracts, 81 abstracts were received from government institutes dealing with water resources and agriculture development, also from universities, other freelance researchers and researchers from the International Water Management Institute (IWMI). Forty Seven of the eighty-one abstracts that were submitted were accepted for compiling full papers. In the past couple of years the sharp increase in food prices worldwide has raised serious concerns about food security, especially in developing countries. To effectively address these concerns a holistic approach is required that encompasses improved agricultural water productivity, adaptation to climate change, targeted and appropriate institutional and financial measures, and a consideration of environmental issues. The main purpose of the conference was to share experiences in these areas and to find opportunities to improve farmers’ incomes and food production, and to promote environmentally sustainable practices in Sri Lanka in the face of growing water scarcity and the challenges of climate change.
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