Stream Drainage…your favorite! Different landscapes show different drainage patterns Underlying bedrock will create various landscapes Rocks’ various resistances to weathering and erosion will create various drainage patterns You must recognize all 4 Trellis/block/rectangular Dendritic (“tree like”) Radial (like radius or radial tires) Annular

Trellis or Block/Rectangular Drainage: occurs on folded landscapes (think folded landscape of Pennsylvania)

Dendritic Drainage: occurs on rolling, flat landscapes…think of the mid-west and the Mississippi River

Radial Drainage: occurs on domed or rounded mountains and hills.

Annular Drainage: occurs on weathered domed mountains and hills.