patterns

Stream drainage patterns are influenced by the rock.

Dendritic.

Found in crowded hill areas.

Found where streams radiate out from a volcano or rounded hill.

A Young Landscape is characterized by sharp, craggy hills and mountains; the drainage system of steep, fast moving streams in narrow V-shaped valleys. The process of erosion has just begun.

A Mature Landscape has low, rounded hills and broad flat valleys; the drainage system are no longer eroding downward, but are side-cutting meanders and floodplains.

An Old Landscape has been eroded almost down to sea level; it has poor drainage with almost no gradient. The streams have many floodplains.