Note on Kawiti Basalt and hydrology of Kawakawa area, Northland

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Abstract
Maps showing the locality, distribution, and surface contours of a basalt flow from Kawiti scoria cone are presented. The Kawiti Basalt is no older than late Quaternary and is probably Holocene. Water supplies for each formation in the Kawakawa area are discussed, and pollution dangers, particularly in the Moerewa Valley, are noted. Probable well yields are: Taheke Basalts (including Kawiti Basalt Member), up to 6,000 g.p.h.; Te Kuiti Group 500+ g.p.h.; Recent alluvial deposits, 0-250 g.p.h.; Waipapa Group, 50-200 g.p.h.; high-level gravels, up to 50 g.p.h.; Horeke Basalts, up to 50 g.p.h.; Onerahi Formation, Pokapu Limestone, and Mangakahia Group, yield little or no water.

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