The Okavango Delta in Botswana is a large inland Delta formed where the Okavango River reaches a tectonic trough in the central part of the basic of the Kalahari.
Water levels are directly affected by meteorological conditions, which produce different environmental circumstances, each and every year. Of the many unpredictable forces that the locals in the Delta have to contend with, meteorological conditions are the greatest. It is unfortunately not possible to predict the exact course of each flood and rainy season, these things are simply not predictable. This makes it very difficult and at certain times of the year, impossible, to predict water levels. The water levels in any region in the Delta can remain static for months and then drop suddenly and dramatically without warning. A short, but violent, thunderstorm, can likewise raise water levels for several weeks at a time.
The life-cycle of the Delta floods:
The delta is very flat with less than 2 metres variation in height across its 15,000km2.
Some numbers to boggle the brain: