GENERAL KNOWLEDGE

Detailed explanation-1: -The Kosi River is known as the “Sorrow of Bihar” as the annual floods affect about 21, 000 km2 (8, 100 sq mi) of fertile agricultural lands thereby disturbing the rural economy. It has an average water flow (discharge) of 2, 166 cubic metres per second (76, 500 cu ft/s).

Detailed explanation-2: -The left bank tributaries of Ganga are kali or Sharda, Gandhak, Kosi, Mahanadi. The right bank tributaries of Ganga are Yamuna and Son. Yamuna joins the Ganga at Allahabad (Prayagraj). Kosi is called Sorrow of Bihar while Damodar is called Sorrow of Bengal as these cause floods in these regions.

Detailed explanation-3: -Kosi River, river in Nepal and northern India. With its tributaries, the Kosi drains the eastern third of Nepal and part of Tibet, including the country around Mount Everest. Some of its headstreams rise beyond the Nepalese border in Tibet.

Detailed explanation-4: -The Kosi basin is bounded on the north by the Himalayas, on the east by Mahananda basin, on the west by the Burhi Gandak basin and on the south by the river Ganga. The basin in India Territory extends over areas of districts Saharsa, Purnea, Khagaria, Madhubani, Sitamarhi, Muzaffarpur and Darbhanga in Bihar state.