The floods have also killed livestock and ruined fields of crops.
Rapid assessment teams comprising staff from UN agencies, NGOs and government bodies are in the process of identifying needs in the affected provinces, the UN Office for the Coordination of Humanitarian Affairs (OCHA) said in a situation report on 6 May.
Officials in the most affected provinces of Jozjan, Bamiyan and Baghlan said shelter, food and drinking water were among the top needs.
Natural disasters - mostly floods, droughts, earthquakes and avalanches - affect over 400,000 people in the country every year, according to OCHA.
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