World Rivers Day

It’s World Rivers Day today, a celebration of our waterways which started life as a Canadian event in 2005 but has since branched out to more than 100 countries. Our photo, captured by Nasa’s Earth-imaging Landsat 8 satellite, shows part of the Mackenzie River delta (the wetlands formed as rivers empty water and sediment into another body of water) and the river’s cloudy waters as they flow from Canada and the US state of Alaska into the Beaufort Sea in the Arctic. The Mackenzie River, Canada’s longest river, helps modulate the Arctic climate, as warmer fresh water mixes with colder sea water.
© Norman Kuring, GSFC/NASA/USGS Landsat