Koshi Barrage

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Koshi Barrage
Koshi Bridge.JPG
Coordinates 26°31′35″N 86°55′37″E / 26.5263°N 86.9269°E / 26.5263; 86.9269Coordinates: 26°31′35″N 86°55′37″E / 26.5263°N 86.9269°E / 26.5263; 86.9269
Carries Motor vehicles, pedestrians and bicycles
Crosses Kosi River
Locale Sunsari and Saptari district, Nepal
Design Suprim and Company Limited, Kolkota, India
Total length 1,150 m (3,773.0 ft)
Width 10 m (32.8 ft)
Construction start 1958
Construction end 1962
Opened 1962; 56 years ago (1962)
Koshi Barrage is located in Nepal
Koshi Barrage
Koshi Barrage
Location in Nepal

The Koshi Barrage is a sluice across the Koshi river that carries vehicular, bicycle, and pedestrian traffic between Saptari district and Sunsari district of Nepal. The bridge is built near the International border with India.[1] It was built between 1958 and 1962 and has 56 gates.[2]The bridge was constructed after the Koshi Agreement was signed between Government of Nepal and India in April 25, 1954.[3][4] The barrage was designed and built by Joseph and Company Limited, India. The Koshi Tappu Wildlife Reserve is roughly 3–4 miles north of the Barrage.

2017 flood[edit]

Due to this barrage, every year several areas of Terai is affected due to the flood and blockage of this barrage. It affects mostly the Koshi region of Bihar (Supaul, Saharsa, Madhepura and Purnia). 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. The Koshi has an average water flow (discharge) of 2,166 m3/s (76,500 cu ft/s).[5]

2008 flood[edit]

In August 2008, the eastern embankments of the Koshi Barrage collapsed, several miles north of the Nepal-India border. The resulting flood left millions of people homeless in Bihar, India.[6]


  1. ^ Khatiwada, Som Prasad (2014-06-25). "River Culture and Water Issue: An Overview of Sapta-Koshi High Dam Project of Nepal Activity". Anthropology. doi:10.4172/2332-. Retrieved 2018-05-29. 
  2. ^ "Koshi Barrack over the largest river of Nepal". Boss Nepal. Retrieved 2018-05-29. 
  3. ^ "Sorrow of Bihar". egov.eletsonline.com. Retrieved 2018-05-29. 
  4. ^ "Koshi Agreement between India and Nepal" (PDF). Indian Embassy, Nepal. Retrieved 2018-05-29. 
  5. ^ "'Sorrow of Bihar' River Kosi: An overview". 2014-08-04. Retrieved 2018-05-29. 
  6. ^ Adhikary, Dhruba (5 September 2008). "For Prachanda, a tale of two cities", Asia Times. Retrieved on 29 September 2008.

External links[edit]