How much water does the Amazon move?
The Amazon is famous not only for length and rainforest scale, but for sheer flow. USGS notes that it discharges enough water into the sea each day to provide fresh water to New York City for more than nine years. Another USGS source places the mean annual discharge in the range of about 90,000 to 100,000 cubic meters per second.
Volume is one of the hardest ideas to picture, so this is exactly the kind of fact that becomes memorable when you compare it with swimming pools, bathtubs, or city water use.