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Managing ongoing debris flow risk in Roxburgh, Otago

Managing ongoing debris flow risk in Roxburgh, Otago

ABSTRACT On 26th November 2017 a localised thunderstorm cell over the hills behind Roxburgh, Central Otago, produced up to an estimated 150mm of rain over a three-hour period. Four catchments experienced severe flooding and sediment movement (debris flows or debris floods), resulting in significant sediment…