This false-color image from April 1, 2002, shows numerous braided channels and oxbow lakes along the Songhua River in northeastern China, just upstream of the city of Harbin.
Acquired April 2, 2011, and February 27, 2011, these natural-color images show rising waters on the Kuiseb River, which flowed all the way to the Atlantic Ocean for the first time in decades.
As they prepare for a satellite that will measure the height and areal extent of rivers in unprecedented detail, hydrologists have released a better map of North American river widths.