This delta in north-west Botswana includes everlasting marshlands and seasonally flooded plains. It is among the only a few main inside delta techniques that don't circulate right into a sea or ocean, with a wetland system that's virtually intact. One of many distinctive traits of the positioning is that the annual flooding from the River Okavango happens through the dry season, with the consequence that the native vegetation and animals have synchronized their organic cycles with these seasonal rains and floods. It's an distinctive instance of the interplay between climatic, hydrological and organic processes. The Okavango Delta is dwelling to among the world’s most endangered species of enormous mammal, such because the cheetah, white rhinoceros, black rhinoceros, African wild canine and lion.
The Okavango Delta is a big low gradient alluvial fan or ‘Inland Delta’ positioned in north-western Botswana. The realm contains everlasting swamps which cowl roughly 600,000 ha together with as much as 1.2m ha of seasonally flooded grassland. The inscribed World Heritage property encompasses an space of two,023,590 ha with a buffer zone of two,286,630 ha. The Okavango Delta is one among a only a few giant inland delta techniques with out an outlet to the ocean, often called an endorheic delta, its waters drain as an alternative into the desert sands of the Kalahari Basin. It's Africa’s third largest alluvial fan and the continent’s largest endorheic delta. Moreover it's in a close to pristine state being a largely untransformed wetland system. The biota has uniquely tailored their progress and reproductive behaviour, notably the flooded grassland biota, to be timed with the arrival of floodwater within the dry, winter season of Botswana.
The geology of the realm, part of the African Rift Valley System, has resulted within the ‘seize’ of the Okavango River that has fashioned the Delta and its in depth waterways, swamps, flooded grasslands and floodplains. The Okavango River, at 1,500kms, is the third largest in southern Africa. The Delta’s dynamic geomorphological historical past has a serious impact on the hydrology, figuring out water circulate path, inundation and dehydration of enormous areas throughout the Delta system. The location is an excellent instance of the interaction between climatic, geomorphological, hydrological, and organic processes that drive and form the system and of the style wherein the Okavango Delta’s vegetation and animals have tailored their lifecycles to the annual cycle of rains and flooding. Subsurface precipitation of calcite and amorphous silica is a vital course of in creating islands and habitat gradients that help various terrestrial and aquatic biota inside a variety of ecological niches.