The Amazon drains water from a region that is large, tropical and flat. This region is 13 times the size of France but little of the river water comes from mountain snow melt. Most of it's water comes from rain in the vast lowlands. This rain forest, located on the equator experiences the equivalent of two summers each year. The result is two seasonal peaks of rainfall and streamflow. In an area as flat as the Amazon basin, these peaks can cause widespread damage. Floods are common in the city of Manaus, which is 1200 kilometers inland but only 26 meters above sea level.