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This article initially introduces the economical geography of the studied region(south zarrine rood county) and describes briefly its different economical aspects(agriculture, mine and industries, services) then studies the impacts of hydromorphodynamics (from the view point of Morphogenes, pedogenes, sediment and the river basin alleviation) on the development of rural economy. For that end, we did granolometric studies on the Simine and Zarinerood river alluvial areas the did analyses based on the results of granlometrics. And studied its impact on the varietization of rural economy of the region .Eventually, concerning with introductive relations between that hydromorphodynamics and different parts of rural economy in the region, some recommendations and approaches have been suggested.
Keyword: Hydromorphodynamic, Rural economy, Granolometry, Industrial development, pattern special of tourism