Modeling Microtopography in Basin Irrigation

Modeling Microtopography in Basin Irrigation

Microtopography has long been regarded as a key variable affecting basin irrigation performance. This paper reports on the extension of a flat bed two-dimensional basin irrigation model to the simulation of irrigation events in basins with microtopography. The model incorporates the local surface slopes in the x and y directions to the governing set of partial differential equations. Three fiel...

RADIAL FLOW MODELING FOR ESTIMATING LEVEL-BASIN IRRIGATION PARAMETERS by

Previous research in the estimation of surface irrigation parameters from advance time or surface profile observations has focused on the development of solutions for parallel surface flow conditions. This study was conducted to assess the usefulness of a polar model simulating radial flow in the Res., Dept. Genética y Producción Vegetal, Laboratorio de Agronomía y Medio Ambiente CSIC-DGA, Esta...

Irrigation efficiency and quality of irrigation return flows in the Ebro River Basin: an overview.

The review analysis of twenty two irrigation efficiency (IE) studies carried out in the Ebro River Basin shows that IE is low (average IE)(avg)(= 53%) in surface-irrigated areas with high-permeable and shallow soils inadequate for this irrigation system, high (IE)(avg)(= 79%) in surface-irrigated areas with appropriate soils for this system, and very high (IE)(avg)(= 94%) in modern, automated a...

Impact of Irrigation on Hydrologic Change in Highly Cultivated Basin

Spatial Variability of Field Microtopography and Its Influence on Irrigation Performance