The relationship between the precipitation and the flow in the Mrqiyeh River Basin by using the Minitab program

The studied area forms a part of the coastal basin on the east coast of the Mediterranean Sea located north of Tartous city.The area is bordered by the Mediterranean Sea from the west. And (jobar,banias, albasia) rivers from north, al Housen river from the south. The area covers about (358) km2. The research aims to find arelationship between rainfall and flow within Mrqiyeh River Basin, by conducting analytical statistical study using Minitab software, which helps in completing the measurements are not available, and to predict the river flows depending on the expected precipitation in the river basin. The study found that the relationship is:Q = 216 + 0.0379 P - 36.8ln (P) + 3.46ln(Q) ,and rainfall reflect 87.2% of the changes that occur to the flow of the river. The study recommended that need to intensify the river discharges measurements in order to increase the reliability of their data.

Mapping of Groundwater Vulnerability to Contamination Using (PI) Method Study area (Marqieh and Alhousen watershed ) in Tartous

The research mainaim is Mapping of Groundwater Vulnerability to Contamination Using (PI) Method toevaluatethe study area (Marqieh and Alhousen watershed ) in Tartous governorate. The area of study forms a part of the coast basin, on the east coast of the Mediterranean Sea, located north of the Tartous governorate between , 34 5000,35 1000latitude in the north of the equator, and , 35 5000,36 2000 longitude in the east of the Greenwicharea covers about 700 Km2. The PI method is a GIS-based approach(We use ARCGIS .10 and the tool : Spatial Analyst Tools) , and gives special methodological tools for karstic aquifer , geological conditions , climate , relief , land use , all these conditions are mapped separately as individual maps and then integrated to achieve the groundwater vulnerability map. all the maps related to the study area was created in digital form and apply analysis processes to create vulnerability map which is a map divided to the fields and every field represents the possibility of contamination of groundwater in this region, whether high or low . The results obtainedfrom this study indicate that about 41% of the study area is under high groundwater vulnerability, 59% is under moderate, low and very low vulnerability.