Usage of WEAP Model in Integrated Water Resources Management: A Case Study of Burdur Lake Basin

As water resources decrease day by day and water scarcity increases, water related problems have reached a global dimension. The intervention in any water source directly or indirectly affects other basin elements. The creation of a whole with the natural resources of the environment has led to the development of the "Integrated Water Resources Management" approach. Therefore, while water resources are planned and managed, not only the quantity of water, but also the quality, the relations with the soil and air, all physical factors should be considered together. In this study, WEAP ("Water Evaluation and Planning" System) program has been used for integrated water resources management regarding Burdur Lake basin. Water resources and demand areas (potable water, irrigation etc.) in the Burdur Lake basin have been introduced to the program and WEAP model has been created. Then the water balance sheet of the current situation has been calculated by using the hydrological data obtained from the stream gauge stations such as precipitation, inflow, evaporation etc. With created model, optimistic and pessimistic scenarios are derived for determining the future (2017-2050) water need. According to the calculations, the amount of water entering the Burdur Lake basin including the superficial and underground waters is currently 275,7 hm3 and the water demand is 33,8 hm3. In the optimistic scenario, the amount of water entering the basin in the year 2050 is 353,5 hm3 and the water demand is 9,3 hm3 while in pessimistic scenario, the amount of water entering the basin is 189,4 hm3 and unmet water demand is 100,7 hm3 was found