Decisions for the effective management of water resources are getting more important due to continuously increasing population and water demand. Yuvac k Dam Basin, located in the Marmara region of Turkey with 258 km2 drainage area, has high flood potential due to its steep topography, rainy climate and snowmelt contribution. Effective operation of Yuvac k Dam Reservoir is a challenging task due to its relatively small reservoir capacity with 51.2 hm3 despite the annual need of 142 hm3 water demand. The main motivation of the study is to provide the necessary amount of water without...