Your search found 15 records
1 Paudyal, G. N.; Das Gupta, A. 1990. Irrigation planning by multilevel optimization. Journal of Irrigation and Drainage Engineering, 116(2):273-291.
(Location: IWMI-HQ Call no: PER Record No: H06257)
The complex problem of irrigation management in a large heterogeneous basin is solved by using a multilevel optimization technique. The real problem consists of determining the optimal cropping patterns in various subareas of the basin, the optimal design capacities of irrigation facilities including both the subsurface and groundwater resources, and optimal water allocation policies for the conjunctive use. The objective of such a management is to obtain a high level of economic efficiency in the irrigation development and water use system within a hydrologically feasible policy domain. Various alternative activities, such as surface water diversion and pumpage, ground water withdrawal and recharge, and alternative future operational scenarios, have to be analyzed in an integrated way. The solution strategy is based on the physical decomposition of a large system into interconnected subsystems. A computationally efficient algorithm that can be implemented in a microcomputer is developed to solve the multilevel linear programming model by an interactive procedure. A Case study is presented to illustrate the application in a realistic situation.
2 Paudyal, G. N.; Das Gupta, A. 1990. A nonlinear chance constrained model for irrigation planning. Agricultural Water Management, 18(2):87-100.
(Location: IWMI-HQ Call no: PER Record No: H06995)
3 Paudyal, G. N.; Manguerra, H. B. 1990. Two-step dynamic programming approach for optimal irrigation water allocation. Water Resources Management, 4(3):187-204.
(Location: IWMI-HQ Call no: PER Record No: H07308)
4 Loof, R.; Paudyal, G. N.; Manguerra, H. B. 1991. Mathematical modelling of irrigation canal systems: State of the art. Bangkok, Thailand: AIT. vii, 127p. (Improved operation and management of large scale irrigation systems monograph no.2)
(Location: IWMI-HQ Call no: 631.7.1 G000 LOO Record No: H08306)
5 Paudyal, G. N.; Shahi, P. K. 1990. Optimal irrigation water allocation in the Bagmati multipurpose reservoir, Nepal. In Simonovic, S. P. et al. (Eds.) Water resource systems application. Winnipeg, Canada: University of Manitoba. pp.358-367.
(Location: IWMI-HQ Call no: 333.9 G000 SIM Record No: H08436)
6 Shrestha, D. L.; Bogardi, J. J.; Paudyal, G. N.. 1990. Evaluating alternative staff space discretization in stochastic dynamic programming for reservoir operation studies. In Simonovic, S. P. et al. (Eds.) Water resource systems application. Winnipeg, Canada: University of Manitoba. pp.378-387.
(Location: IWMI-HQ Call no: 333.9 G000 SIM Record No: H08438)
7 Paudyal, G. N.; Loof, R. 1988. Improvement of irrigation system operation. Bangkok, Thailand: AIT. viii, 75p. (Research report no.211)
(Location: IWMI-HQ Call no: 631.7.6.1 G000 PAU Record No: H09001)
8 Paudyal, G. N.; Pandit, D. S.; Goto, A. 1991. Optimization of design of on-farm channel network in an irrigated area. Irrigation and Drainage Systems, 5(4):383-395.
(Location: IWMI-HQ Call no: PER Record No: H09980)
9 Shrestha, D. L.; Paudyal, G. N.. 1992. Water resources development planning in the Karnali river basin, Nepal. International Journal of Water Resources Development, 8(3):195-203.
(Location: IWMI-HQ Call no: PER Record No: H011611)
(1.21 MB)
10 Das, B.; Loof, R.; Paudyal, G. N.. 1992. Integrated approach for the main system operation and management in a canal irrigation system. 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. 2. Leuven, Belgium: Center for Irrigation Engineering. pp.737-745.
Irrigation canals ; Irrigation systems ; Irrigation management ; Irrigation operation ; Simulation models ; Mathematical models ; Optimization methods ; Decision support tools
(Location: IWMI-HQ Call no: 631.7.1 G000 FEY Record No: H014454)
11 Kojiri, T.; Sugiyama, Y.; Paudyal, G. N.. 1993. Fuzzy reservoir operation with multi-objective and few monitoring data. In Tingsanchali, T. (Ed.), Proceedings of the International Conference on Environmentally Sound Water Resources Utilization, Bangkok, Thailand, 8-11 November 1993. Vol.1. Bangkok, Thailand: AIT. pp.II-280-287.
(Location: IWMI-HQ Call no: 333.91 G000 TIN Record No: H015808)
12 Paudyal, G. N.; Jensen, R. A. 1993. Fresh water management to alleviate salinity intrusion in the south west region of Bangladesh. In Tingsanchali, T. (Ed.), Proceedings of the International Conference on Environmentally Sound Water Resources Utilization, Bangkok, Thailand, 8-11 November 1993. Vol.2. Bangkok, Thailand: AIT. pp.III-9-16.
(Location: IWMI-HQ Call no: 333.91 G000 TIN Record No: H015818)
13 Loof, R.; Das, B.; Paudyal, G. N.. 1994. Improved operation of large irrigation canal systems in Southeast Asia. International Journal of Water Resources Development, 10(4):393-415.
Irrigation canals ; Simulation models ; Mathematical models ; Case studies / South East Asia / Thailand
(Location: IWMI-HQ Call no: PER Record No: H016117)
Poor performance of the irrigation systems in Southeast Asian countries is a cause for concern considering the increasing water scarcity. Lack of adequate knowledge and systematic ignorance of main system management has been identified as one of the primary factors for the resulting poor performance of these systems. In this study a model has been developed for operating the main canal of these systems by integrating hydraulics of the flow and decision-making technique. The model developed was applied to the main canal of the Phitsanulok Irrigation Project in Northern Thailand. The results of this application approved the concept and envisaged substantial improvement in the operation of the main canal. The model can in general be applied to similar irrigation systems in the developing countries.
14 Lamsal, K.; Paudyal, G. N.; Saeed, M. 1999. Model for assessing impact of salinity on soil water availability and crop yield. Agricultural Water Management, 41(1):57-70.
Soil salinity ; Soil moisture ; Soil water ; Leaching ; Mathematical models ; Crop yield ; Evapotranspiration
(Location: IWMI-HQ Call no: PER Record No: H024408)
15 Kalu, I. L.; Paudyal, G. N.; Gupta, A. D. 1995. Equity and efficiency issues in irrigation water distribution. Agricultural Water Management, 28(4):335-348.
Water distribution ; Irrigation water ; Policy ; Equity ; Irrigation efficiency ; Optimization ; Constraints ; Simulation models / Nepal
(Location: IWMI-HQ Call no: PER Record No: H017778)
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