Drainage patterns

The 3 main types of drainage patterns are :

Radial Drainage - Radial drainage patterns form when streams and rivers flow off a central peak or dome like a volcano

Dendritic drainage - Dendritic drainage patterns look like tree branches with lots of twigs. They form in areas with flat and uniform bedrock like sandstone or shale.

Rectangular drainage - Rectangular drainage patterns have rivers with right-angle bends. They form where the bedrock is faulted and jointed.