Even so, there are no cases of an overall national physical shortage of water, as the share of total water use in total availability of annual freshwater resources is low. As a result competition for water between agriculture, other users (e.g. industrial, urban) and the environment, especially in drier regions, is becoming a growing concern in many countries. This region in 2002 accounted for 51% of US cropland, 76% of the US irrigated area.