Although located close to the Indian Ocean, northern Kruger experiences high levels of aridity because of the Limpopo high-pressure system. Covered in a blanket of shrub mopane, the low-lying northern Kruger area is dissected by the Olifants and Letaba rivers and other, smaller rivers that are more like large pools of water. The addition of reservoirs has allowed for the presence of hippos and water birds. These areas of water have created lush river corridors, adding to the ecological diversity of the area and attracting various animals and birds, including waterbuck, bushbuck, kudu, nyala, buffalo, lion, leopard, hyena and half of Kruger’s elephants.