Climate:
subtropical to temperate; substantial rainfall in the eastern portions, becoming semiarid in the far west
Terrain:
grassy plains and wooded hills east of Rio Paraguay; Gran Chaco region west of Rio Paraguay mostly low, marshy plain near the river, and dry forest and thorny scrub elsewhere
Elevation extremes:
lowest point: junction of Rio Paraguay and Rio Parana 46 m
highest point: Cerro Pero 842 m
Natural resources:
hydropower, timber, iron ore, manganese, limestone
Land use: