Which river forms the international boundary between Uttarakhand (India) and Nepal along the eastern edge of the Kumaon region?

💡 Solution & Explanation

The Kali River, also known as the Sharda River in its lower course, originates in the Greater Himalayas near Kalapani and demarcates the eastern international boundary between Uttarakhand and Nepal. Kosi flows entirely within Kumaon, Tons is a major western tributary of the Yamuna, and Ramganga drains the central part of the state. Boundary rivers play a crucial role in geopolitics and regional water treaties.