The Segura Basin in Spain is the driest in Europe. With 365 mm of annual rainfall, this basin has the lowest rainfall in the European Union. Nevertheless, it is also a region which exports fruit and vegetables. The Segura River is thus the main water sources for irrigation. In 1986, when Spain became a member of the European Union, the production of agriculture and canned food significantly increased. As a consequence, a rise in wastewater discharges and lack of water in the already water-stressed Segura River brought extreme deterioration of the water-related ecosystem and a strong social discontent.
Zhang River runs through Shanxi Province, Hebei Province and Henan Province as the border of Hebei and Henan Provinces. Within the basin, there is a large population but inadequate water and land resources. The residents of the villages along the river only have a small amount of valley terraces and flood land barely meeting their survival demand.
Watersheds are essential to the livelihoods of humans. A significant portion of a society’s economic gain and overall survival is acquired through the ecosystem goods and services provided by watersheds. Jamaica as a Small Island Developing State (SIDS) has recently been facing increased stress and vulnerability to its water resources.