Evaluation of River Power Distribution, Shear Stress and Their Hazard Effects on the Urban Range of Saraskand Chay River

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 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. 57TIn57T79T 57T79Tpresent situation of flow in these sections will be phenomena such as destroying the57T79T 57T79Twalls and57T79T 57 79Tthe banks of river. Also, the sections of 9, 15 and 16 have specific strength57T79T 57T79Tand shear stress57 79T 57T79Tless than57T79T 57T79Tother because of the more width57T79T and 57T79Tlow slope of57T79T 57T79Tthe river57 79T. 79TAlso 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.