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-exploited 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.