The survey of locating bottlenecksand physical developmentof Khorramabad with an emphasis indexes Neotectonic

One of the important features of urbanization in Iran is the rapid expansion of the cities. This expansion depends on geographic and environmental conditions. Topography and geomorph ology Landforms in locating, developing, physical development and morphology of cities have a significant impact. The aim of this study is to identify natural restrictions (geomorphology) and propos eappropriate place to determine the physical development of Kho rr amabad Lorestan Province Neotectonic index stressed. To do this geomorphological evidences such as height and tilt of the city, also Neotectonic indexes such as SL, S, SMF and Fd are used. To extract and analyze data from topographic maps, geological, digital elevation model (DEM) and the Arc GIS 10.5, Global Mapper 18 software for calculation, cutting and, production of new maps have been used. Based on the results of S in the range of 1/22 and the SL for a total of Khorramabad River within the city limits 151/6 are obtained. The average index Smf for the northern and southern mountain Khorramabad city 0.988 and The average index FD for the northern and southern mountain city is 0.302. IAT indexis used to assess these index and based on the results of this index in the range of extreme activities Nontectonic Khormamabad in class 1.