Forests growing on the plain rivers floodplains deeply influence erosion and sedimentation. They control erosion and protect the banks. The riverine forests impact on the erosion and alluviation processes is discussed with reference to various types of banks: concave, eroded, convex bulit-up, and rectilinear ones. The paper discusses different tree species, as well as differences in the age and density of growth. Consideration of all those data would permit to choose right species, as well as correct system of planting, and thus to regulate and control erosion and alluviation in each individual case.