Ongoing drought and diminished snowpack in the Rockies have combined with increasing demands downstream to cause the great reservoir to drop to historically low levels.
This detailed astronaut photograph features surface currents illuminated by mirror-like reflections of sunlight off the waters around the Malée Atoll in the Maldive Islands.
Heavy winter and spring snowfall provided much-needed meltwater, but the effects of long-term drought mean the lake is nowhere near its highs from the 1980s and 90s.
Sitting atop the Andes plateau on the border between Peru and Bolivia, the lake is the highest major body of navigable water in the world and the largest lake in South America.