Dehradun district is the capital of the newly formed state of Uttarakhand, formerly known as Uttaranchal (2000). For administrative convenience, the state has been divided into two regions i.e. Kumaon Region (Eastern Part) and Garhwal Region (Western Part). The district of Dehradun comes under the Garhwal division of Uttarakhand. It is bounded on the north and northwest by Uttarkashi district and in the east by Tehri Garhwal and Pauri Garhwal, in the south by Saharanpur (Uttar Pradesh), and Hardwar district— it’s western boundary adjoins the Sirmour District of Himachal Pradesh with rivers Tons and Yamuna separating the two. The total area of the district is 3088sq. km.