Drainage basins and patterns- A. Commonly dendritic. Streams course set at higher elevation. Meandering - process of producing curves in the rivers. Meander scars and oxbow lakes. B. Higher margins of most river channels.
Flood plains are generally marshy.
C. Sediment charged rivers are braided. As river reaches base level drop in velocity dumps sediment load. Onto a flat plain, an alluvial fan is formed.