GHD | Oceana Gold New Zealand Ltd. | 12552081 | Waihi North Project G-13 The results from the hydraulic model have been successfully verified for peak flows, peak water levels and volumes, and considered acceptable to be used for the purpose of this study. Existing development scenarios show that the Ohinemuri River is largely contained within its banks with minimal flooding in the vicinity of existing mine infrastructure up to a 100 year ARI event. Future scenarios indicate that proposed infrastructure is not affected by the river water levels other than the area of the proposed NRS collection pond and design of this feature will need to account for flood water levels. No impact on upstream / downstream water levels is shown from the modelling.
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