Answer: Ranchi District, Jharkhand
Notes: Recently, a flash flood in the Subarnarekha River affected over 50,000 people in Balasore district of Odisha as water entered their villages. The Subarnarekha River originates near Nagri village in Ranchi district of Jharkhand at an elevation of 600 metres. It flows for 395 kilometres before draining into the Bay of Bengal. The river flows east through a copper-mining region and descends from the Chota Nagpur plateau at the Hundrugbagh waterfall. Main right-side tributaries include the Kanchi, the Karkari, and the Kharkai rivers. The Subarnarekha basin covers parts of Jharkhand, Odisha, and a smaller region in West Bengal.
