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How was Lake Victoria formed?

      

Describe how Lake Victoria was formed.

  

Answers

Maurice
In the early Tertiary Period, a divide once existed, separating rivers draining into the Indian ocean and those that were tributaries of the Congo along the current Cherangani-Mau highlands. Land in the west began to rise, but rivers down cut and flowed on forming antecedent drainage. Land to the west was then uplifted again, forming the western arm of the Rift Valley. The plateau surface was also raised, but the middle section down warped too forming a basin. The basin also tilted eastwards.Rivers Kagera, Kafu and Katonga, which were tributaries of the Congo, reversed their flow, and started flowing eastwards, flooding their own valleys and filling the new basin. Rivers Nyando, Nzoia among others,continued flowing westwards, and were intercepted filling the new basin. The watershed to the east was uplifted as the Gregory Rift Valley formed, this increased the waters flowing into the new basin, forming Lake Victoria.
maurice.mutuku answered the question on June 9, 2017 at 05:46

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