Subject: Reginalization of potential zones for physical expansion of sabzevar city base on the natural indices

Abstract Physical development of cities seriously and geomorphological indicators of natural and associated complications . These natural phenomena are always changes over time, with the problems in their cities to expand . Thus , policies and functions should be applied to control the natural elements . The research methodology is based on a descriptive - analytical firm . The main tool in the GIS software Arc GIS is and the results show that the topographic maps , slope , elevation , soil , land use , distance to fault , groundwater and ... And then overlay maps in GIS, ranging from the preparation of stable and unstable land where physical development is done in terms of variables , or ventures such as floods , earthquakes, seismicity and ... They are then evaluated based on the optimization of Sabzevar in order to develop appropriate physical and environmental preservation have been proposed.