Before revision: Cambridge Dictionary Riverine meaning by Cambridge Dictionary Upper course Riverscape of the upper course of the Skógá River (Iceland) In the upper course of rivers, channels are narrow and gradients are steep.Internet Geography Upper course of a river Vertical erosion is the prominent land-forming process.
After revision: <ref>< a riverien is in the shape of donut and has sprinkle as ilands and has cottan candy iciningCambridge Dictionary Riverine meaning by Cambridge Dictionary Upper course Riverscape of the upper course of the Skógá River (Iceland) In the upper course of rivers, channels are narrow and gradients are steep.Internet Geography Upper course of a river Vertical erosion is the prominent land-forming process.