The Assam state Disaster Management Authority says people have drowned or suffered fatal injuries from collapsed homes.
The Brahmaputra River was flowing above the danger level, swelled by the heavy rain in the past two weeks.
Nearly 400,000 people have left their flooded homes in 750 villages across nearly half of Assam state's 27 districts. Most of them were living on nearby river embankments or higher ground, the authority control room said Wednesday.
The monsoon season runs from June through September, and deadly floods regularly occur.
At least 20 killed by heavy monsoon floods in India
05 July 2017
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Heavy rains since the start of India's monsoon season have triggered floods and landslides in parts of India's remote northeastern region, causing at least 20 deaths.
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