Studying the Structural and Non-structural Solutions for Sustainable Water resources Management of Hamedan-Bahar Plainn

Ekbatan Dam and groundwater resources in Hamedan-Bahar plain are the main suppliers of drinking water in Hamedan city. The aim of this study is to evaluate drinking water supply in the medium-term time horizons (1410) and long term (1430). Therefore, resource system, consumption area of Ekbatan dam and underground provider are modeled by WEAP using 40-year-old statistics. calibrating the findings, the actual conditions of use and watershed resources in the current situation (in 1391) and both unauthorized and authorized the withdrawal of underground water source were modeled. The results showed that water shortage of Hamedan is around 2.8% annually. Having per capita expenditure per person as well as the urban population estimated in the aforesaid period, at first, the demand for drinking water is calculated. Then, considering water demand to be constant in other sectors, water demand was modeled. The results showed that about 19.6% and 34. 4% in 1410 and 1430 respectively face water shortage. The situation was almost the same in other sectors. Due to constant water resources and significant deficiencies in the research horizons, respectively, structural and non-structural solutions and their effects were tested. However, it was observed that structural measures alone are not helpful. That is why non-structural solutions on side structural solutions were proposed and examined.