agriculture is the dominant water consumer, with 87% of all water use, and hence the major contributor to the current deficit in the water balance, which has led to groundwater mining and to many springs drying up.

The main water infrastructure in Egypt is on the Nile River, notably the Aswan High Dam, the Aswan Old Dam and a number of downstream barrages.

Agriculture consumes 1,546 MCM/yr (83% of total use), drinking water 196 MCM/yr and industrial consumption is 130 MCM/yr, totalling 1,872 MCM/yr. This represents a deficit of 316 MCM/yr.

Groundwater quality in the shallow and deep aquifer systems, particularly in the Bajada region, ranges from 600 to 2000 parts per million (ppm). Household water quality is considered one of the best in the world, reaching 96%

Irrigated agriculture is the primary water consumer, with an average of around 60% of total water use, where 39% is used for productive agriculture, 11% used for greening and landscaping and 10% for forestry.

Some researchers claim that in about 5,000-4,000 BC, the marshlands were covered by a lagoonal marine environment, likely having brackish waters

Since the marshes are located at the tail end of the Tigris-Euphrates watershed, water storage and control projects are the main projects impacting on the wetlands.

For many years, negotiations between Turkey and Syria over the Orontes or Asi River were linked to issues concerning the Euphrates and Tigris rivers shared between Turkey, Syria and Iraq, and progress of the former was dependent on progress of the latter

The length of the river is open to discussion. Depending on the source consulted, this ranges from 248km to 556km. Rainfall in the basin is about 644mm annually. The average temperature is around 16°C. The climate is semi-arid to arid in Lebanon, with annual rainfall of about 400mm

The annual amount of water used in Syria is about 15BCM. This comes from the Euphrates (50 per cent) and the Asi River basins (20 per cent). Of the water usage from the Asi River, 2,230MCM are used for irrigation, 320MCM for domestic purposes and 270MCM for industrial purposes. The total amount of water withdrawn from the Asi River is 2,730MCM