| Established | 2003 |
| Geography | Located in the Shivalik foothills of the Himalayas in Yamunanagar district, Haryana, India. Shares boundaries with Himachal Pradesh, Uttarakhand, and Uttar Pradesh. |
| Biome | Dense Sal forests, Khair forests, and patches of grasslands |
| Rivers | Adjacent to the Yamuna river, forming the eastern boundary. |
| Flora | Mainly consists of Sal, Khair, Shisham, Tun, Sain, and Amla trees. |
| Fauna | Home to various wildlife, including leopards, panthers, elephants, wild boar, sambar, and various bird species. |
| Hills | Situated in the Shivalik foothills of the Himalayas. |
| Unique Features | Named after the Kalesar (Shiva) temple located within. Popular for bird-watching and wildlife enthusiasts. The only national park in Haryana with a natural forest supporting diverse flora and fauna. Also known for preventing flash floods and maintaining ecological stability in the region. |
