Because of its frequent floods and nearby swamps, Blenheim was once known as Beavertown. In February 1868, three days of heavy rain at Blenheim and in the surrounding hills caused major flooding. The rainfall for the three days at Blenheim was 104.5mm, causing the Wairau, Taylor and the Omaka rivers to become swollen. A Presbyterian church still being built floated downstream to lodge against the Omaka bridge.
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