In the work presentsd results of investigations of wetness coefficient defined as ratio of water content in an any point of a basin to comparative point located on the Surface of a basin, carried out according to model proposed by Svetlitchnyi et al. The obtained research results were compared with the empirical ones carried out during various soil humidity periods AMC (Antedescent Moisture Conditions). Investigations were carried out in the Mątny stream basin, of area 1.47 km², located between Gorce and Beskid Wyspowy. Comparative analysis showed very low fitting for the experimental results. The model proposed by Svetlitchnyi et al. requires the analysis of influence of another factors oh distribution of this parameter on the area of a basin.