From rain through river catchment to aquifer: the flow of water through the Wairau hydraulic system

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SR_2019-63.pdf
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 Morgenstern U, Davidson, P, Townsend DB, White PA, van der Raaij RW, Stewart MK, Moreau M, Daughney CJ. 2019. From rain through river catchment to aquifer: the flow of water through the Wairau hydraulic system. Lower Hutt (NZ): GNS Science. 83 p. (GNS Science report; 2019/63). doi:10.21420/7125-ST46

Abstract

Groundwater is an important source of water for the Wairau Plain. Concerns about its sustainable yield and contamination from nutrients have prompted several hydrogeological studies over time to better understand the groundwater system. The main aim of this study is the review and consistent interpretation of age-tracer, isotope and chemistry data, collected between 1968 and 2019, to obtain the hydraulic parameters necessary to understand the declining water levels and spring flows and to assess the groundwater storage that feeds the river and springs. (auth)