Ruacana Falls

Ruacana Falls is among the largest waterfalls in Africa both based on volume and width. The Kunene River drops 352 feet (107 meters) over a broad semi crescent shaped, angled scarp into a narrow gorge which straddles the border of Angola and Namibia (the primary viewpoints are located in Namibia). At times of peak discharge the falls may stretch over 3,500 feet wide, but because the volume of the Kunene River varies greatly from season to season the actual width and volume of the falls varies greatly.
Additionally, the river has been harnessed for hydroelectric production immediately above the falls. During the dry season the river is siphoned off entirely and the falls run dry. From roughly December to June the annual monsoons provide ample sustenance to the river basin that the hydro project maxes out and the falls return to their impressive natural state.