Klaserie RiverThe Klaserie River is a river in Limpopo Province, South Africa. It flows northeastwards and is a tributary of the Olifants River, joining it at 90° in the west of the Kruger National Park.Dam Jan Wassenaar Dam - built in 1961 as a earthen dam with a concrete spillway to store irrigation water, it was raised by a further three metres in 1968. It is 98 metres long and 17.5 metres tall.