The disaster has struck the northwestern island of Sumatra over the past two weeks, AFP reported.
It ranks among the worst recent catastrophes to hit the region since the 2004 Aceh tsunami.
Rescuers expect the final toll to climb, with 218 people still reported missing.
Vast areas have been inundated, forcing 1.2 million residents into temporary shelters.
Frustration is mounting among victims over the perceived pace of relief operations.
Indonesian authorities have so far declined to call for international assistance.
MA/PR
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