북한강 유역에는 춘천강·소양강·홍천강 등의 지류가 만든 춘천·홍천 등의 침식분지가 있다.
In the basin of the Bukhan River, there are erosion basins such as Chuncheon and Hongcheon made by tributaries such as Chuncheon River, Soyang River, and Hongcheon River.