The Murchison earthquake of 1929 created the Maruia Falls by triggering a landslide which diverted the course of the Maruia River westwards, forcing it to cut a new channel over an old river bank. The river eroded gravels below the bank, forming the Maruia Falls. Immediately after the earthquake, the falls were only about a metre high, but after a year, the drop was 5 metres. In the early 2000s it was 10 metres, as shown here.
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