Engineering geological assessment of Symonds Stream water supply scheme, Papakura

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Brown, I.R. 1975 Engineering geological assessment of Symonds Stream water supply scheme, Papakura. Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report EG 235 6 p.

Abstract: Two water supply dam sites on Symonds Stream, east of Papakura, will have foundations and abutments of greywacke rock. The tunnel for a water supply pipeline may pass through a mixed face of greywacke and lower strength Waitemata Group rocks. (auth)