RT - Journal Article T1 - Engineering geomorphological assessment of lower Gamasiab river in east of Kermanshah province JF - jeg YR - 2014 JO - jeg VO - 7 IS - 2 UR - http://jeg.khu.ac.ir/article-1-387-en.html SP - 1811 EP - 1832 K1 - Engineering geomorphology K1 - Catchment K1 - Morplology K1 - Gamasiab river K1 - Kermanshah AB - Awareness of orphological features of rivers is necessary for recognition of river behavior and optimum application of rivers. Overall catchment physiografy have important role for determination factors such as floods, erodible and sediment mutagenicity. In this study in order to understand the behavior of Gamasiab River in the east of Kermanshah province, geomorphologic features of this river has been considered. Study of engineering geomorphologic properties is done by using existing data from previous studies, site visit and field perceptions, study of geology and topography maps. Physiographic properties of catchment, channels morphologic properties and geology conditions in this region have been studied. In this research, several parameters such as average width, environment, area, hydrogeologic coefficient, catchment form, maximum, minimum and mean high, and longitudinal slope has calculated. Also status of drainage density of this river has been investigated and time to focus calculated. Finally this river review and classified according to various classifications for rivers LA eng UL http://jeg.khu.ac.ir/article-1-387-en.html M3 ER -