Keywords:isotope ratio, snow environment, regional scale
The regional water resource managemnt is estimate difficult opreration in the future because climate change has a connection with snow variation. It is inportant to predict snow environment using climate model outputs to this solution. However this data can not use for regional water management acoording large grid size. It is necessary to develop this management to export small spatial resolution. we tried to study detail climate information using isotope ratio as tracer. The regularity to spatial feature was obtained vy chamical characteristic in this study. And we also understood water effect due to snowconditon. As result, snow depth variation changes depend on sbowfall source as spatial characteristic. Therefore, we could recognize new regularity of acid snow.