The United Nations Environment Programme’s (UNEP) Global Resource Information Database (GRID), located in Sioux Falls, SD, has released an atlas showing landscape-scale environmental changes that have affected Africa’s lakes over the past 30 years. The atlas is titled: “Africa’s Lakes: Atlas of Our Changing Environment.” The imagery found in the atlas is predominately from the Landsat satellites.
+ A look at Lake Djoudj
+ Read the UNEP Press Release (external link)

Above the Earth, Below the Surface: Landsat’s Role in Monitoring Water Quality
Safeguarding freshwater resources is crucial, and while scientists use a variety of ground-based techniques to gauge water quality, the Landsat program has provided water quality data from orbit for decades.