Explanation:

The Kharkai River is a river in eastern India. It is one of the major tributaries of the Subarnarekha River. It flows through Adityapur region of Jamshedpur. The 236 kilometres (147 mi) long river has many important towns beside its bank. It arises in Mayurbhanj district, Odisha, on the north slopes of Darbarmela Parbat and the western slopes of Tungru Pahar, of the Simlipal Massif. It flows past Rairangpur and heads north to about Saraikela and then east, entering the Subarnarekha in northwestern Jamshedpur. Its tributaries in Orissa include the Kardkai, on the left; the Kandria, Nusa and Barhai on the right; and the Karanjia on the left. For about 9 kilometres (6 mi) below the junction with the Karanjia, the Kharkai forms the boundary between Odisha and Jharkhand State. After entering Jharkhand its tributaries include the Torlo and Ili Gara on the left. Its last major tributary is the Sanjai, entering from the left, 17 kilometres (11 mi), as the river flows, above its mouth.