 Water levels around 8,250 - 5,000 years ago (when the African Humid Period ended) are unclear, but highstand ended latest around 5,200 years before present.The lake level drop between 8,700 and 8,200 years before present may be associated with the 8.2 kiloyear event, which is linked to drying elsewhere.A last lake stand above the lake floor occurred towards the end of the Medieval Warm Period.