Answer:
The Eastern Mediterranean subregion is characterized by arid and semi-arid climates, which have a significant impact on water systems in the area. The primary source of water in the region is the Jordan River, which flows through Lebanon, Israel, Jordan, and Syria. The river is also fed by several smaller tributaries, including the Yarmouk River, which flows from Syria into Jordan.
Another major water system in the region is the Tigris-Euphrates River Basin, which provides water to Iraq, Turkey, and Syria. However, this water system has been significantly impacted by human activity, such as damming and irrigation projects, which have led to a decrease in water quality and availability.
Groundwater is also an important source of water in the Eastern Mediterranean subregion. The most significant aquifer in the area is the Mountain Aquifer, which is located beneath Israel, the West Bank, and Gaza. However, overuse of the aquifer has led to depletion and contamination.
Overall, water resources in the Eastern Mediterranean subregion are limited and subject to increasing demand and stress. Climate change and population growth are expected to exacerbate these challenges, making sustainable management of water systems critical for the region's future.