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Title

Model for the Simulation of Water Flows in Irrigation Districts. I: Description

AuthorsLecina Brau, Sergio CSIC; Playán Jubillar, Enrique CSIC ORCID
KeywordsSurface irrigation
Irrigation districts
Water management
Reservoir management
Decision Support System
Issue DateJul-2006
PublisherAmerican Society of Civil Engineers
CitationJ. Irrig. and Drain. Engrg. Volume 132, Issue 4, pp. 310-321 (July/August 2006)
AbstractSignificant improvements in the profitability and sustainability of irrigated areas can be obtained by the application of new technologies. In this work, a model for the simulation of water flows in irrigation districts is presented. The model is based on the combination of a number of modules specialized on surface irrigation, open channel distribution networks, crop growth modeling, irrigation decision making, and hydrosaline balances. These modules are executed in parallel, and are connected by a series of variables. The surface irrigation module is based on a numerical hydrodynamic routine solving the Saint Venant equations, including the heterogeneity of soil physical properties. The simulation of water conveyance is performed on the basis of the capacity of the elements of the conveyance network. Crop growth is simulated using a scheme derived from the well-known model CropWat. The irrigation decision making module satisfies water orders considering water stress, yield sensitivity to stress, multiple water sources, and the network capacity. Finally, the hydrosaline module is based on a steady state approach, and provides estimations of the volume and salinity of the irrigation return flows for the whole irrigation season. The application of the model to district irrigation management and modernization studies may be limited by the volume of data required. In a companion paper, the model is calibrated, validated, and applied to a real irrigation district.
Description46 Pag., 2 Tabl., 6 Fig. The definitive version is available at: http://scitation.aip.org/iro
Publisher version (URL)http://dx.doi.org/10.1061/(ASCE)0733-9437(2006)132:4(310)
URIhttp://hdl.handle.net/10261/27781
DOI10.1061/(ASCE)0733-9437(2006)132:4(310)
ISSN0733-9437
Appears in Collections:(EEAD) Artículos

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