Water flow in soils is under the influence of climatic parameters, soil characteristics, and other factors such as terrain slope, plant cover, drainage systems, etc. Soil hydraulic parameters are the result of soil texture composition, soil structure, and other physicochemical properties (e.g., organic matter content). Water flow models in variably saturated conditions can be reliably used to estimate the water flow in the soil. The thesis aims to assess the water flow in soils with different hydraulic characteristics using laboratory methods and numerical modeling. To determine the hydraulic characteristics of the soil, undisturbed samples of 250 cm3 were collected from five different locations in the city of Zagreb. The samples were used to determine retention and hydraulic conductivity curves of the soil based on which the values of hydraulic parameters will be obtained (e.g., the amount of water in the soil, hydraulic conductivity). The objectives of this thesis were to determine the hydraulic characteristics of the soil in individual locations and to perform numerical modeling of the water flow based on experimentally determined soil hydraulic parameters. The performed measurements of hydraulic soil parameters showed high relevance of the estimated retention and hydraulic curves based on the van Genuchten-Mualem model (R2 and RMSE values), which indicates the reliability of the applied methods (RMSE <0.01 cm3/cm3 and RMSE <0.6 cm/d). Although it was the same type of soil (Rendzina), large differences in hydraulic parameters were observed, which indicates a considerable heterogeneity of the studied soils. Numerical modeling of water flow at experimental sites indicated the importance of estimating all hydraulic parameters. In addition to the hydraulic conductivity of unsaturated soil, other parameters (e.g., water retention) also affect the behavior and water flow in unsaturated soil.