하천 유역에는 좁은 곡저 평야가, 북쪽 장평천과 합류 지역 부근에는 비교적 넓은 충적 평야가 발달하였다.
A narrow valley bottom plain was developed in the river basin, and a relatively large alluvial plain was developed near the confluence area and Jangpyeongcheon Stream in the north.