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Flood modelling of the Buller River, Westport

This case study demonstrates a method for adjusting historic daily rainfall data associated with a past (approximately 1-in-50 year) flood event according to projected future changes to mean rainfall. The adjusted rainfall data are used in combination with projections of sea level rise to re-model the historic flood flow in the Buller River,
and to produce maps of potential flood inundation using a sophisticated hydraulic model. RiskScape was then used to assess damage estimates to buildings associated with the projected inundation levels.


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  • Location: -41.850850, 171.865329
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