The Sharda River or Mahakali River is also called Kali Gad by local Pahari people in Uttarakhand where the river demarcates Nepals western border with India. This boundary was established by the 1816 Sugauli treaty. The river is also spelled as Sarda. The river descends from 3,600 metres at Kalapani to 200 metres entering the Terai plains, offering an unrealized potential for hydroelectric power generation. The river is also proposed as source for one of the many projects in the Himalayan component of the Indian Rivers Interlink project. Below the NepalUttarakhand border the river enters Uttar Pradesh state and flows southeast across the plains to join the Ghagra river, a tributary of the Ganges.