The work contains results of observations on the relationship between precipitation and surface runoff and slopewash on the surface plots in UMCS Science Station in Guciów. Observations come from a period of 6 years (2000-2006). Tests were conducted on three plots with typical use of the area. Two plots, with meadow and fallow land, were on the south slope and inclination of 3-5°. The third plot was established in the forest, whose slope was inclined at an angle of 13-18° and east display. Cover of soil in the station area, are eroded podsol soil, with silty sand in the arable layer. Obtained results of the observations were included in the form of regression equations describing the relationship between rainfall during the summer and surface runoff, runoff and slopewash of soil's, rainfall erosivity factor and slopewash.