Effects of Soil Properties on Infiltrated Water Depth Profile

Abstract

Level Border system is one of the most common effective methods of applied water to the land,  the border is bounded by levees on both sides and settlement horizontally without slope in the direction of  flow. The end of border is blocked and no losses due to surface runoff occur. In this way the required quantity of water is delivered and allows moving forward along the border and penetrating the soil by infiltration process. And the phenomenon of infiltration is a very important factor which controls the amount 
of water stored in the soil, and consequently, the estimation of water distribution profile will be useful to indicate the efficiency of the application and distribution uniformity which both are required to assess the border regime. In this research, the estimating of infiltration profiles was based upon the applying of Kostiakov‟s Function which its coefficients and exponents results from the measurements of the double cylinder infiltrometer. Many points were selected to install the double cylinder infiltrometrs, hence, the 
characteristics of infiltration had been studied.
The prediction of infiltration function needs to know the flow rate, time of application, advance and exponent function. The comparison between the results obtained from the average infiltration function applied for all considered points and those estimated from direct measurements reveal a poor agreement and lead to nonreliable results for the application efficiency and distribution uniformity indications. The main conclusions derived from the study appear that the behavior of subsurface water movement is based mainly upon the soil properties and independent to some extent for amount of water and time of application.