Infiltration or Roughness from Surface Irrigation Advance

by Albert J. Clemmens, U.S. Water Conservation Lab, United States,

Document Type: Proceeding Paper

Part of: Irrigation and Drainage


Over the past several decades, a significant effort has gone into the development of mathematical models of water flow over the soil surface. Significant progress has been made in prediction capabilities. These models have been primarily used for design, evaluation, and recommendations. Little has been done with these models to assist irrigators in operating the system during an irrigation. This paper presents some issues that need to be addressed in adapting these predictive models for operations. In particular, this paper addresses the ability of predictive models to estimate infiltration and roughness parameters during advance in level basins planted to alfalfa.

Subject Headings: Mathematical models | Hydraulic roughness | Surface irrigation | Overland flow | Recharge basins | Water flow | Vegetation

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