The amount of rainfall in Iran's main river basins between September 2020 and July 2021 was, in most places, substantially lower compared to the same period last year …. Researchers in the United States have gathered data using satellite imagery. This data compares rainfall up to March of this year against the 40-year average. The first three months of 2021 were all well below that average, according to the Center for Hydrometeorology at the University of California Irvine. Read More