Cook Islands, Rarotonga water supply project : a preliminary evaluation of the potential for large capacity, valley storage reservoirs

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EGI_88-074
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Beetham, R.D. 1988. Cook Islands, Rarotonga water supply project : a preliminary evaluation of the potential for large capacity, valley storage reservoirs. New Zealand Geological Survey immediate report EG 88/074 57 p., figs

Abstract: Rarotonga is well endorsed with small streams which, because of the rugged, uninhabited, bush-clad interior and regular rainfall, are ideal for water supply development. It is only during infrequent dry spells that demand exceeds supply and water shortages occur. At other times the supply is considerably greater than demand. Once the five or six new intakes are built, all the larger catchments on the island will have been developed for water supply purposes and the options for further improvement to supply during dry spells are limited to (i) development of a large capacity reservoir or (ii) development of the groundwater resource. (auth)