What conditions encourage the development of drainage patterns including rasial,dendritic and trellis?
As you know, all rivers flows downhill and a drainage basin is all the land that supplies the river and its tributaries with water. If you could look down (from high above) and see all the branches (tributaries and distributaries) you would be looking at the drainage pattern. The shape of the drainage pattern depends on climate, typpes of rocks, soil and the changes made to the river. “Trellis drainage is comnon where massive layers of sedimentary rock have ‘slipped’.” The Dendritic drainage pattern looks like the branches of a tree or veins in a leaf. This pattern develops in areas with flat-lying rocks because flat-lying rocks don’t provide a particular direction to the development of stream Streams that flow over the flat-lying rock in the US midwest have this drainage pattern. I think you mean radial not rasial.
