What are the formations formed by lower couse ?
Answers
Explanation:
Lower course of a river
The volume of water in a river is at its greatest in the lower course. This is due to the contribution of water from tributaries. The river channel is deep and wide and the land around the river is flat. Energy in the river is at its lowest and deposition occurs. .
Deltas are often found at the mouth of large rivers. An example is the Nile Delta. Deltas are formed when a river deposits material faster than the sea can erode it.
The processes of erosion, transportation and deposition give rise to different land forms including gorges, V shaped valleys, braided rivers, meanders, deltas, interlocking spurs, rapids, waterfalls, oxbow lakes, floodplains, and levees.
Upper course river features include steep-sided V-shaped valleys, interlocking spurs, rapids, waterfalls and gorges. Middle course river features include wider, shallower valleys, meanders, and oxbow lakes. Lower course river features include wide flat-bottomed valleys, floodplains and deltas.