Geotechnical parameters of slope cover soils originated from valley of Siarki stream located in environs of Siary and Owczary (Beskid Niski Mts.), where in June of 2010 were observed shallow landslides, are presented in the paper. Tests results revealed that tested soils can be described as clayey silts with sand and grains of gravel fraction. It was stated that the soils are well compactable according to requirements for material used for road embankments. On the other hand, tests revealed that the soils are sensitive to changes of moisture content, especially in case of bearing capacity and shear strength parameters, mainly cohesion values. It was found that the analyzed soils can be a good base of road pavement in dry site or if they isolated from the influence of ground water.