At first the rift valley will be dominated by river systems, including these environments: alluvial fans, river channels and floodplains. The rift valley may fill with fresh water and become a lake.

Upon completion of this unit students should be able to: Describe longitudinal and lateral profiles (shapes) of an alluvial fan. Discuss the difference between a debris flow and a stream-dominated ...

the trail to Horseshoe Falls up the Alluvial Fan along Roaring River is only a half mile walk up a paved walkway that gains about 60 to 80 feet (depending on which parking area is used as the ...