Alluvial fans morphometric of Mighan Basin (Arak)

Alluvial fans are one of the most important geomorphic features in arid and semi-aridregions. In Mighan basin, because of it’s semi- arid conditions. The Alluvial fans canbe seen everywhere. The city of Arak is located on an alluvial fan that its Radial is 13kilometers long. In regarding, there are other large alluvial fans in the Mighan basinthat are the location of a few villages and farms. In contrast, in south western of Arak,there are many alluvial fans that didn’t provide and positive environmental condition.This condition depends on stability of alluvial fans. For understanding these aspects ofalluvial fans, one should study their peculier morphometric characteristics. In suchstudies, situation of shape, area and slope of alluvial fans, usually is analyzed withgeomorphology of their drainage basins. In this paper, results of the study betweenarea and slope of 24 alluvial fans with their drainage basins have been shown bymathematical models and regression figures.