 Erosion impact are usually severe on dry areas, due to lack of vegetation.In Colombia, areas such as Cúcuta, Villa de Leyva, Tatacoa desert in Huila, Chicamocha canyon, La Guajira, Valle de Tenza, Valle Medio del Patía are especially vulnerable.The Magdalena System, oriental valleys and Atratoa and Magdalena basins, delta waterways such as the Arauca, Grande de Santa Marta, and the Grande de Lorica wetland and the Mojana and Momposina areas are especially prone to floods and river overflow.