Your search found 11 records
1 Bird, J. D.; Bolton, P. 1987. A proposal for research into developing improved water management methods at Hakwatuna Oya Irrigation Scheme, Sri Lanka. Wallingford, UK: Hydraulics Research Ltd. 23p. (Hydraulics Research report no.ODRP 68)
Water management ; Research ; Irrigation programs ; Models ; Hydraulics ; Rice ; Waterborne diseases ; Computer techniques ; Resource management / Sri Lanka
(Location: IWMI-HQ Call no: 631.7.8 G744 BIR Record No: H003565)
(0.90 MB)
2 Goldsmith, H.; Bird, J. D.; Howarth, S. E. 1988. Computerized irrigation scheduling using spreadsheet models. Irrigation and Drainage Systems, 2(2):211-227.
Small scale systems ; Computer techniques ; Models ; Water management ; Irrigation scheduling ; Developing countries / Zimbabwe / Thailand
(Location: IWMI-HQ Call no: PER Record No: H003697)
(1.17 MB)
3 Bird, J. D.; Zainudeen, M. Y. 1989. Hakwatuna Oya water management study, Sri Lanka: Assessment of historical data and performance in Maha 1988/89 season. Wallingford, UK: Hydraulic Research Ltd. 41p. + tables. (Report OD 112)
Water management ; Irrigation programs ; Performance evaluation ; Water distribution ; Flow ; Surface irrigation ; Monitoring ; Computer techniques / Sri Lanka
(Location: IWMI-HQ Call no: 631.7.8 G744 BIR Record No: H005905)
(4.97 MB)
The Hakwatuna Oya Water Management Study is an intervention research project aimed at improving the management of main system water distribution in medium sized surface irrigation schemes. The specific objectives are to develop and test a microcomputer based management information system which includes establishment of as monitoring and control network. The study arose out of shortcomings identified by the Kaudulla study in Sri Lanka, in particular the under-utilization of rainfall and a high degree of inequity. The duration of this project is three years, the first year being a study of existing practices followed by the intervention phase when distribution schedules will be produced and feedback mechanisms tested. This reports summaries the monitoring phase of the project including historical analysis of climatic and operations and a detailed assessment of flow distribution in the maha 1988/1989 season. The results indicate: high water consumption during the preparation; a generally adequate overall supply for the remainder of the growing season; significant inequity of distribution particularly along the right bank canal and at the distributory level of the system and; highly variable flows within the main system which are likely to cause distribution problems at lower levels. Recommendations with regard to specific field tasks and further study of the policy options are made for the intervention phase.
4 Bird, J. D.. 1991. Introducing monitoring and evaluation into main system management - A low investment approach. Irrigation and Drainage Systems, 5(1):43-60.
(Location: IWMI-HQ Call no: PER Record No: H08866)
(1.15 MB)
5 Bird, J. D.; Gillott, P. W. K. 1992. A quantitative review of adequacy and equity indicators for irrigation system distribution. Wallingford, Oxfordshire, UK: Hydraulics Research Ltd. 14p.
(Location: IWMI-HQ Call no: P 2627 Record No: H011904)
International Conference on Advances in Planning, Design and Management of Irrigation Systems as Related to Sustainable Land Use, Leuven, Belgium, 14-17 September 1992.
6 Bird, J. D.; Makin, I. W. 1992. Generalized irrigation management software: Database and main system scheduling model. Wallingford, Oxfordshire, UK: Hydraulics Research Ltd. 11p. (OD/P 115)
Irrigation scheduling ; Mathematical models ; Computer techniques ; Irrigation management ; Monitoring / Sri Lanka / Thailand / Bangladesh
(Location: IWMI-HQ Call no: P 2629 Record No: H011906)
(0.70 MB)
International Conference on Advances in Planning, Design and Management of Irrigation Systems as Related to Sustainable Land Use, Leuven, Belgium, 14-17 September 1992.
7 Gillott, P. W. K.; Bird, J. D.. 1993. Choosing equity indicators: theoretical and empirical considerations. 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.3:69-79.
(Location: IWMI HQ Call no: 631.7.1 G570 MAI Record No: H012682)
(0.49 MB)
Various indicators of equity have been suggested for the measurement of inequality in supplies of water within irrigation schemes. Five of these are reviewed in terms of their suitability as indicators of performance. Points considered are the extent to which an indicator behaves in a way in which reflects an intuitive idea of inequality; simplicity of definition and interpretation; and actual behavior for two schemes in Asia. Abernethy's modified interquartile ratio is attractively simple, but is insensitive to a large part of its input data. Theil's measure is difficult to interpret, but should be considered if analysis of the contribution of different parts of the scheme is thought desirable. The other three measures considered are Gini's coefficient, Christiansen's coefficient and the coefficient of variation. These are all defined in a fairly simple way, and reasonably well behaved in their response to empirical data. In theoretical terms, the coefficient of variation appears to have the edge.
8 Bird, J. D.; Makin, I. W. 1992. Generalised irrigation management software: Database and main system scheduling model. In Feyen, J.; Mwendera, E.; Badji, M. (Eds.), Advances in planning, design and management of irrigation systems as related to sustainable land use: Proceedings of an International Conference organized by the Center for Irrigation Engineering of the Katholieke Universiteit Leuven in cooperation with the European Committee for Water Resources Management, Leuven, Belgium, 14-17 September 1992. Vol. 3. Leuven, Belgium: Center for Irrigation Engineering. pp.863-873.
Irrigation management ; Computer software ; Computer techniques ; Databases ; Surface irrigation ; Irrigation programs ; Irrigation scheduling ; Monitoring / Sri Lanka / Thailand / Bangladesh
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014468)
(0.99 MB)
9 Bird, J. D.; Gillott, P. W. K. 1992. A quantitative review of adequacy and equity indicators for irrigation system distribution. In Feyen, J.; Mwendera, E.; Badji, M. (Eds.), Advances in planning, design and management of irrigation systems as related to sustainable land use: Proceedings of an International Conference organized by the Center for Irrigation Engineering of the Katholieke Universiteit Leuven in cooperation with the European Committee for Water Resources Management, Leuven, Belgium, 14-17 September 1992. Vol. 3. Leuven, Belgium: Center for Irrigation Engineering. pp.901-914.
Irrigation systems ; Assessment ; Performance indexes ; Water supply ; Rain ; Water requirements ; Equity
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014471)
(1.28 MB)
10 Makin, I. W.; Bird, J. D.. 1993. An intermediate level of data processing for irrigation management. In ICID, 15th International Congress on Irrigation and Drainage, The Hague, Netherlands, 1993: Water management in the next century: Transactions: Vol.1-G, Symposium. R.2. New Delhi, India: ICID. pp.17-30.
Irrigation management ; Data processing ; Computer techniques ; Simulation models ; Water requirements ; Databases ; Water distribution ; Monitoring ; Decision support tools / Sri Lanka / Thailand
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H015729)
11 Bird, J. D.. 1995. Moving towards sustainable management of irrigation and drainage systems. In Japanese Institute of Irrigation and Drainage, Proceedings of the Tokyo Symposium on Sustainable Agriculture and Rural Development: Agriculture for our planet, Tokyo, Japan, 27-29 November 1995. pp.285-298.
Irrigation management ; Drainage ; Sustainability ; Farmer managed irrigation systems / Indonesia / Pakistan / Bangladesh
(Location: IWMI-HQ Call no: 338.1 G000 JAP Record No: H017991)
(12.75 MB)
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