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Sone River

July 26, 2026

Bihar and Jharkhand are set to sign an agreement formalising the sharing of Sone river waters.

About Sone River:

  • The Sone River, also called Son, is a principal southern tributary of the Ganges (Ganga) River after the Yamuna River. 
  • Origin: It is a perennial river that originates in the Amarkantak hills of the Maikal Range in Madhya Pradesh.
  • It flows through the states of Madhya Pradesh (around 500 km), Uttar Pradesh, Jharkhand, and Bihar.
  • Course: The River flows in a north-northwest direction till Bansagar reservoir, after which it changes its course sharply eastwards, flowing parallel to Kaimur Range, and joins Ganga River upstream of Patna in Bihar.
  • Tributaries: Major tributaries of the Son River are Banas, Gopad, Rihand, Kanhar and North Koel.
  • The Sone valley is geologically almost a continuation of that of the Narmada River to the southwest.
  • The valley is bordered by the Kaimur Range to the north and the Chota Nagpur plateau to the south. 
  • Dams and Hydroelectric Projects:
    • Bansagar Dam in Madhya Pradesh.
    • Rihand Dam in Uttar Pradesh 
    • Indrapuri Barrage in Bihar

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