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Modeling reservoir irrigation in uncertain hydrologic environment

Jairaj, PG and Vedula, S (2003) Modeling reservoir irrigation in uncertain hydrologic environment. In: Journal of Irrigation and Drainage Engineering, 129 (3). pp. 164-172.

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In a detailed model for reservoir irrigation taking into account the soil moisture dynamics in the root zone of the crops, the data set for reservoir inflow and rainfall in the command will usually be of sufficient length to enable their variations to be described by probability distributions. However, the potential evapotranspiration of the crop itself depends on the characteristics of the crop and the reference evaporation, the quantification of both being associated with a high degree of uncertainty. The main purpose of this paper is to propose a mathematical programming model to determine the annual relative yield of crops and to determine its reliability, for a single reservoir meant for irrigation of multiple crops, incorporating variations in inflow, rainfall in the command area, and crop consumptive use. The inflow to the reservoir and rainfall in the reservoir command area are treated as random variables, whereas potential evapotranspiration is modeled as a fuzzy set. The model's application is illustrated with reference to an existing single-reservoir system in Southern India.

Item Type: Journal Article
Publication: Journal of Irrigation and Drainage Engineering
Publisher: American Society of Civil Engineers
Additional Information: Copyright of this article belongs to American Society of Civil Engineers.
Keywords: Hydrologic models;Irrigation;Reservoirs;Crops.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 26 Aug 2011 10:16
Last Modified: 26 Aug 2011 10:16
URI: http://eprints.iisc.ac.in/id/eprint/40142

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