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Effect of recharge variations on regional groundwater quality in mid-Canterbury, New Zealand



Effect of recharge variations on regional groundwater quality in mid-Canterbury, New Zealand



Journal of Hydrology, New Zealand 33(1): 1-16



A network of 22 wells in the title area was sampled monthly between September 1990 and September 1991 and analysed for nitrate and other major ions. Sixteen of the wells had been sampled 12 years earlier and the data were compared to determine changes in groundwater quality over that period. Oxygen isotopes were also measured to provide insight into the recharge processes. Less rain fell during 1990/91 than in 1978/79, so much more irrigation water was applied in the 1990/91 period.

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Accession: 002604038

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