GHD | Oceana Gold New Zealand Ltd. | 12552081 | Waihi North Project 30 3.2.3 Ohinemuri River The Waihi township is located in the upper catchment of the Ohinemuri River. This is also the location of existing mining infrastructure, with TSFs to the east of the Ohinemuri River and plant areas and mines to the west of the river. The Ohinemuri River has a total catchment area of 290 km2. The upper catchment to the east consists of the predominantly flat farmland of the Waihi Plains. Numerous tributaries join the river as it flows west – one of which is the Ruahorehore. The upper catchments are steep and forested. The Ohinemuri River flows through the narrow Karangahake Gorge prior to joining the Thames/Waihou River in the west. Figure 18 shows the Ohinemuri River catchment. Figure 18 Ohinemuri River Sub-catchments Existing discharges from the site at Waihi are all to the Ohinemuri River or its tributary the Ruahorehore Stream. Figure 11 shows the river in relation to the existing TSFs, the open pit and Waihi town.
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