Thomson's Falls is a 74 metres waterfall on the Ewaso Ng'iro River in Central Rift Valley Kenya, a few kilometres from Lake Ol Bolossat, which drains from the Aberdare Range. It is situated 3 kilometres from the town of Nyahururu, at 2,360 metres elevation. In 1883, Joseph Thomson was the first European to reach waterfall and named it for his father.