With China's rapid economic growth,the people's income levels significantly increased with rapid increase of the city water supply and water use.based on the water supply data in Chengdu City from 2006 to the February 2010,disregarded the long-term trends and seasonal factors,through analysis and identification for the residual sequence,this paper established the city monthly water supply of the product seasonal ARIMA model(3,1,1)(1,1,1)12.According to this model,the paper forecasted the month water supply ...