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Satellite image of Okavango Delta, with national borders added Typical region in the Okavango Delta, with free canals and lakes, swamps and islandsThe Okavango Delta [2] (or Okavango Grassland; formerly spelled "Okovango" or "Okovanggo") in Botswana is a vast inland delta formed where the Okavango River reaches a tectonic trough at an altitude of 930–1,000 metres (3,050–3,280 ft) [3] in ...
The Cubango and Cuito Rivers are the principal tributaries of the Okavango Delta, and affect its health. [1] [2] In Angola, the upper reaches of the Cuito suffers clogging due to controlled burns of the vegetation, reducing water flow downstream as the accumulated water instead flows into the sand.
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When the land between two parallel faults (the Gumare fault and the Kunyere fault) started dropping, the Okavango River's flow was blocked by the Thamalakane fault and it started to fan out and built myriads of water channels - what is now known as the Okavango Delta. One of the main channels draining the Okavango Delta is the Boro River.
The Okavango River, which originates in Angola, enters the delta at its apex. On the average, the river carries about 10 000 million m 3 of water a year into the delta. The flow rate is high in the months of March and April (about 1000 m 3 /s on the average), but varying from year to year between 500 and 1500 m 3 /s and low in November (100 to ...
In periods of very high water in the Okavango, the water flows eastward towards the Cuando-Linyanti-System. The last time this happened was in August 2009 after 30 years of falling dry. In times of high water in the Kwando, the water can flow west from the Cuando towards the Okavango Delta, but often evaporates before it reaches the delta. [5]
Map of het Okavango-stroomgebied showing the main rivers and tributeries in Botswana. This is a list of rivers in Botswana. This list is arranged by drainage basin, with respective tributaries indented under each larger stream's name.
The Okavango Delta in Botswana is one of Africa's largest freshwater marshes. Before the flowing water reaches the Okavango Delta, it comes from Angola and passes through Namibia. [7] This marsh is so large that it can support commercial and recreational fishing. [7] There are many tree islands within the Okavango marsh due to termites.