Geographical Research

Flow power is an important parameter that can be used in the morphological analysis. Research objectives are evaluation of river power distribution and factors affecting it in studied levels and in different return periods of Saraskand Chay River urban interval, also relationship between river power whit shear stress distributions and investigation their effects. For these has been used flow hydrological data and obtained data from field studies. Also shear stress and river spatial power in different levels wereFlow power is an important parameter that can be used in the morphological analysis. Research objectives are evaluation of river power distribution and factorsaffecting it in studied levels and in different return periods of Saraskand Chay River urban interval, also relationship between river power whit shear stress distributions and investigation their effects. For these has been used flow hydrological data and obtained data from field studies. Also shear stress and river spatial power in different levels were computed and compared by given formulas. Results indicated that spatial power and shear stress in intervals 10, 11, 12, 13 and 14 are more than other intervals. Also Dangerous intervals are in different return periods. In present situation of flow in these sections will be phenomena such as destroying the walls and the banks of river. Also,the sections of 9, 15 and 16 have specific strength and shear stress less than other because of the more width and low slope of Tthe river. Also results show that Geomorphic forms created in the active part of riverbed change by the base flow of River. In many studied levels, modifying and creating the river forms is by Factors except river spatially Invasion of domain River and construction debris discharged into the river.