Hegan, B.D. 1974 Rangipo power project. Headrace and tailrace tunnels. Realignment proposals (22-4-74). Lower Hutt: New Zealand Geological Survey. New Zealand Geological Survey report EG 185 6 p.
Abstract: This report deals with a proposed new alignment for the Rangipo Headrace Tunnel. This new proposal would supercede the alignment shown on the plan 11/R/11 (Hegan, 1973). The new alignment differs from the previous alignment in two areas, i)in the section from the Rangipo dam site to the Waiputa Stream and ii) in the Waihaha Stream area. (auth)
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