A river is said to be rejuvenated if its base level is lowered.
- A river's base level can be lowered by either the ground level rising (crustal uplift) or by a drop in sea level
- This drop in base level gives the river greater potential energy, increasing is vertical energy potential
- The long profile of the river is extended and a knickpoint (sharp change in gradient e.g. waterfall) will form and mark the junction between the original long profile and the new one
1 of 2
River Terraces and Incised Meanders
- Former floodplains that have been left above the level of present-day flooding following increased vertical erosion
- Formed when a river keeps its meandering course as vertical erosion increases. The result is a deep, winding valley with steep sides.
2 of 2