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Annual average monsoon precipitation in India over 110 years. The long-term average has been 899 millimeters of precipitation. [1] However, the monsoon varies over the Indian subcontinent within a ±20% range. Rains that exceed 10% typically lead to major floods, while a 10% shortfall is a significant drought. [2]
A delay of a few days in the arrival of the monsoon can badly affect the economy, as evidenced in the numerous droughts in India in the 1990s. The monsoon is widely welcomed and appreciated by city-dwellers as well, for it provides relief from the climax of summer heat in June. [ 54 ]
Most of the rivers in India originate from the four major watersheds in India. The Himalayan watershed is the source of majority of the major river systems in India including the three longest rivers–the Ganges, the Brahmaputra and the Indus. [3] [4] These three river systems are fed by more than 5000 glaciers. [5]
Map showing average onset (monsoon arrival) dates and wind directions prevalent during India's southwest summer monsoon. ... Nepal border along the Sarda river is ...
The name Ganges is used for the river between the confluence of the Bhagirathi and Alaknanda rivers, in the Himalayas, and the first bifurcation of the river, near the Farakka Barrage and the India-Bangladesh Border. The length of the Ganges is frequently said to be slightly over 2,600 km (1,600 mi) long, about 2,601 km (1,616 mi), [37] 2,525 ...
The present Ghaggar-Hakra River is a seasonal river in India and Pakistan that flows only during the monsoon season, but satellite images in possession of the ISRO and ONGC have confirmed that the major course of a river ran through the present-day Ghaggar River. [74]
Monsoon rains are crucial for farm output and economic growth, as about 55% of India's arable land is rain-fed, and agriculture forms about 15% of a $2.5-trillion economy that is the third biggest ...
Most of the rivers in India originate from the four major watersheds in India. The Himalayan watershed is the source of majority of the major river systems in India including the three major rivers–the Ganges, the Brahmaputra and the Indus. [3] [4] These three river systems are fed by more than 5000 glaciers. [5] The Aravalli range in the ...