This district is divided into two major parts: the main city Dehradun surrounded by Shivalik and the Jaunsar-Bawar, which is in the foothills of Himalayas. In the north and northwest it borders on the district of Uttarkashi and Tehri Garhwal, in the east and southeast by Pauri Garhwal and Ganges river, in the west, it is bordered by Shimla and Sirmaur districts of Himachal Pradesh, Yamunanagar district of Haryana and the Tons and Yamuna rivers. To the south are Haridwar and Uttar Pradesh's Saharanpur district.