Officials on Saturday warned residents of Khuzestan province about rising water levels and urged them to take evacuation messages seriously, IRNA reported.
The International Federation of Red Cross and Red Crescent said it helped thousands of people affected by the floods.
"Red Crescent volunteers and staff have evacuated hundreds of people to safety and have distributed food and items such as tents, blankets and health sets to tens of thousands of people," said Middle Eastern and North Africa manager Sayed Hashem.
Iran accuses the US of hindering aid
On 2 April, US Secretary of State Mike Pompeo issued a statement condemning the victims of the floods in Iran and blaming the government for the disaster.
"These floods demonstrate once again the level of maladministration by the Iranian government in city planning and emergency preparedness. The regime blames external entities, while it is their maladministration that led to this disaster," he said. "The United States is ready to help and contribute to the International Federation of Red Cross and Red Crescent Societies, which would then direct the money through the Iranian Red Crescent for relief."
"It appears that the US Secretary of State has not been aware of the mismanagement of natural disasters in the US over the last two years, and therefore has an unprofessional, interventionist and demagogic view of Iran's management of the horrific and unprecedented floods that simultaneously affected 24 provinces, "Zarif said, for referring to hurricanes Harvey, Michael and Florence and Maria.