Foresightand Investigating the Effective Factors on UrbanWater Needs: A Case Study of Yazd City

In order to understand the future urban water needs, industry, drinking and sanitation water needs were studied as two major consumers of the Yazd city. . In the present study, water consumption data of Yazd city and its effective parameters including climate, population growth and welfare of the community were collected and examined by regression model in Spss18 software. Then, by using Lars-WG model, future temperature was modeled by A1 and A scenarios. Results showed the impact of climate change is significant in the study area, but compared to population and industrial growth is negligible. Therefore, water drinking consumption was modeled by using the population growth factor. In order to predict the urban water demand in 2036, the exponential model was used to estimate thecity population Using water consumption in industrial sector and by considering different industrial development scenarios, water requirements for this sector was also predicted for 2036.The results showed, it can be predicted that in1415, the amountofwaterneededfor drinkingwill be2.2 times, and for consumptioninindustrial activities7.2to7.6times tothe current situation.