Rivers in the Matarraña/Matarranya region include the Matarraña, after which the area is named, the Algars, the Ulldemó and the Tastavins. All of them are irregular in nature and well conserved. Local vegetation is determined by the altitude. A significant forest mass of wild and spice Austrian pine can be found in the Puertos de Beceite, as well as yews, holm oaks, maples, hollies, hazelnutand oaks. Poplars, ashes and small stone pine forests are located along the riversides, whereas olives, almonds and vines are the main agricultural crops in the area.