Modeling subsurface and surface runoff during heavy rainfall on sloping land
DOI:
https://doi.org/10.15407/dopovidi2026.01.012Keywords:
modeling, infi ltration, rainfall, slope, head losses, surface runoff , engineering methodAbstract
The fundamental principles of storm water runoff theory and the mathematical problem of combined surface runoff and rainwater filtration on sloping agricultural land in a hydraulic statement are formulated. An approximate solu- tion to the problem has been obtained and justified. Based on this, a method has been developed and illustrated for the engineering calculation of local and integral hydrological and filtration characteristics for the first stage of surface and saturated flow formation (surface flooding). Recommendations are given for estimating the volumes of productive (soil moisture) and unproductive (surface runoff) water for the first and, in part, the second (drainage) stages. With regard to the climatic and soil-hydrophysical conditions of the western region of Ukraine, the reality of the significant influence of capillary forces on infiltration and, in general, on the water-physical situation on a sloping site is shown.
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