The Aravalli Range forms the eastern boundary of the district; the southern boundary ends at Bamnera village in Sumerpur Tehsil. A zone of foothills lies to the west, through which run the many tributaries of the Luni River. The western portion of the district includes the alluvial plain of the Luni. It is bounded by eight districts, Nagaur District to the north, Ajmer District to the northeast, Rajsamand District to the east, Udaipur District to the southeast, Sirohi District to the southwest, Jalore District and Barmer District to the west, and Jodhpur District to the northwest. The major part of the district has elevations ranging from 200 to 300 m above mean sea level, but in the east—toward the Aravalli Range—the elevation increases and the average is nearer 600 m and at some places the elevations exceed 1000 m.