Al-Kabeer Al-Shemale river rises from Aqraa Mountain and coastal mountains, it is considered one of the largest rivers in the coastal area.Its catchment area is 1097 km2, and empties into the sea to the southern of Lattakia.The study aims to determin
e the impact of climate change on the river discharge. Since the rainfall is the major factor in the runoff formation in the river catchment, the rainfall changes have been studied in climatic stations located within the catchment and its surroundings, and for a period of time exceeding thirty years. The study found that the general trend of rainfall change and runoff with time is decreasing, declining rainfall values ranged in the studied stations between (0.4-12.5) mm per year, and the runoff reached 0.08m3/s in the year. A mathematical equation, predict river discharge after knowing the values of daily precipitation, has been concluded.
International river basins are characterized by their wide extent where mapping earth
surface features and drawing contours by topographic team become–somehow- impossible
because the cost and efforts consumed to execute it become very high and may
exceed
reasonable limits. Here it becomes necessary to use digital elevation models (DEM)
inferred by specialized scientific organizations using remote sensing.
There are several DEMs available on the internet and downloadable for free. The
primary factor in defining the models efficiency in building hydrological models not the
least cost but the maximum reliable results and better resolution that adequate to the
capabilities of the PCs.
In this study, three DEMs were used to derive and build hydrological models for the
Euphrates-Tigris basin using Geographic information system techniques. The resulted
boundaries of Euphrates-Tigris basin were compared with three boundaries implemented
by international research organizations (UNEP, ESCWA, and FAO). As a conclusion of
this comparison, the SRTM—3arc DEM was the most efficient model among used models.
In addition, this study indicated the necessity to reevaluate Basin’s boundaries and correct
the spatial distribution of proportion for basin area between the riparian countries.
Banias River Basin is located in the middle of the Syrian coast between the Joubar and
Merqiah River Basins. Its catchment area is ) 97 ( km2, and its length is ( 24,5) km.
The research aims to get the optimal management of the available and non-ex
ploited water
resources of Banias Spring, using water evaluation and planning system WEAP. Research
methodology based on collecting data and proposing two scenarios, first: storing of Banias spring
water to provide the water requirement of Banias city, Second: replacing Sin Spring in order to
provide Banias Refinery water. The percentage of coverage is about 88% requirement in scenario
of water supply to Banias city, while differentiated during the year in scenario meet the water
requirement of Banias Refinery, which has reached 84% in the first six months and fallen in
October to 52%. Existing wells in the confined aquifer are used to cover the shortfall in the
requirement.
