Abstract

Laplace transformation, integral, and numerical solutions and six empirical formulations to the Lewis and Milne surface irrigation volume balance equation were evaluated using field and laboratory data. These formulations and the proposed solution methods are presented in Part I of this paper. The field data were from published experiments, and the laboratory data were obtained from a 61‐m model border with a computer‐controlled infiltrating bed which could simulate a wide range of infiltration characteristics. The results indicated that a simple and direct method of analysis based on the Kostiakov infiltration equation and the power advance equation satisfactorily predicted observed runoff volumes. Furthermore, this method accurately determined the infiltration characteristics that were simulated by the model border.

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