하천으로는 신안을 흐르는 샛터내와 앞내, 마리강변, 신원을 흐르는 앞내, 뒷골이 있다.
As for the streams, there are Saetteonae Stream and Apnae Stream, the bank of Marigang River that flows through Sinan, and the Apnae Stream and Duitgol valley that flow through Shinwon.