SECTION 2 Environmental Setting C:\D Data\GWS C Drive\GWS\Client Files\1344 OGL - WKP\4 Deliverables\WKP Final Draft Report\June Report\WAI-985-000-REP-LC-0030. Final_Rev_0.docx 11 Figure 8B Wharekirauponga Groundwater Catchment Sections The recharge source for groundwater in the catchment is direct rainfall infiltration on the surrounding hills that soaks into the surficial soil regolith and then into the rockmass. The mechanisms for groundwater discharge in the catchment are: shallow soil water moving laterally down slopes (interflow); diffuse groundwater moving through fractures in the rock mass fabric; or point source discharges from structures (veins or highly fractured areas). Of these sources, interflow is noted to be the most significant mechanism of groundwater discharge. This is discussed further in this report in relation to the Conceptual Groundwater Model (CGM).
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