Weather forecasters predicted more heavy rain for much of the area, including the states of Andhra Pradesh, Odisha and Bengal, the Press Trust of India reported.
The flooding has also drowned much of the region's farmland, destroying crops. Road travel has become almost impossible in many areas, and most trains in the region have been canceled, including the famous Coromandel Express between Kolkata, or Calcutta, and Chennai.
Rail service was expected to resume Saturday on the Konark Express, which crosses the subcontinent from Bhubaneswar in Odisha to Mumbai. Railway sources told PTI that water had receded from the route's track.
Most of the deaths were caused by drowning and by the collapse of buildings and walls. In Bengal, for example, Sanjoy Mondal and his son were killed in Kolkata when the balcony of a house on Cotton Street collapsed.