 Some conservationists have questioned the future of "Tablas de Daimiel" as an internationally protected area, because the site's eco-system has been damaged by over-use of water resources.In the twentieth century, groundwater in the area was used in an unsustainable way to develop irrigated agriculture, and it has proved difficult to implement a solution.In 2008, it was reported that UNESCO was giving Spain until 2011 to reverse the degradation of Tablas de Daimiel.