Coupled Reservoir Operation-Irrigation Scheduling by Dynamic Programming
Publication: Journal of Irrigation and Drainage Engineering
Volume 128, Issue 2
Abstract
This paper develops a forward dynamic programming (FDP) model to solve the problem of reservoir operation and irrigation scheduling. The typical scenario for application of the model is composed of a system of two reservoirs in parallel supplying water to as many as three irrigation districts. Two models are coupled. The interseasonal model defines seasonal deliveries from the reservoir system. The intraseasonal model uses area and water allocations generated from the interseasonal model to produce an irrigation scheduling for the individual farms in one of the irrigation districts in the reservoir system. Crop evapotranspiration, reservoir evaporation, and inflows are forecasted. Upon availability of the current values, the forecast is updated and the model runs to generate a more precise irrigation schedule. This feature permits the application of the model for real-time operation of the irrigation district. At the end of the season, the intraseasonal model is updated. The FDP model is applied to a real watershed with a 2 year planning horizon for the interseasonal and 6 months for the intraseasonal model.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 128 • Issue 2 • April 2002
Pages: 63 - 73
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Jan 18, 2001
Accepted: Aug 29, 2001
Published online: Apr 1, 2002
Published in print: Apr 2002
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