According to reports, approximately 60, 000 people live in the rural area downstream from the lake.

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The spokesman added that a "close eye" would be kept on the situation, especially in the area downstream of Oxford, where the flood risk would be the greatest if there is heavy and persistent rainfall.

BBC: Flood warnings remain in many areas

Berger said they record a memory being made, in an undamaged area of the brain, then use that data to predict what a damaged area "downstream" should be doing.

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Malcolm Dowden, an environmental law specialist, points out another problem: government-sponsored flood defences in one area may shift floods downstream to other areas.

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Another program in the Naivasha area, also spearheaded by WWF and CARE, promotes reliable water supplies downstream by helping farmers adapt to climate change.

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