Аннотация:Estimates of hydrological properties and properties in soils and soil constructions are dome based on the computer modeling approach. Soil parameters (e.g., number of layers, their sequence, depth and texture) and environmental parameters (e.g., rainfall and slope) are typical income data and estimates of soil properties (e.g., moisture, water content and storage) and their profile distributions are the expected model outcomes. From many models available on the market, HYDRUS model, developed by Dr Jirka Simunek and Dr. Martinus T. van Genuchten and distributed by PC-Progress company (www.pc-progress.com). HUDRUS model focuses on transfer of water, soluble substances (e.g., salts, pollutants or nutrients) in the unsaturated (vadose) zone between the soil surface and the groundwater table (Simunek et al., 2019). Several versions of the HYDRUS model are developed. HYDRUS 1D models focuses on vertical fluxes describing such processes as filtration, infiltration, evaporation and evapotranspiration. HYDRUS 2D and 3D model allows expanding to the pedon and landscape dimensions. This practical exercise will utilize the open-source HYDRUS 1D model and aims to familiarize participants with the overall organization of the HYDRUS-1D graphical user interface and to run the model variably-saturated water flow in a single- and multi-layered soil profiles with and without root water uptake for short-term (1 and 30 days) and longer-term (1 year) climatic boundary conditions.