Ohau and Waikawa catchments of the Horowhenua Groundwater Management Zone - groundwater dynamics, source, and hydrochemical processes as inferred from the groundwater tracer data

Uwe Morgenstern, Rob W. van der Raaij, W. Troy Baisden, Mike K. Stewart, Heather Martindale, Abby Matthews & S Collins
Groundwater age, chemistry, gas, and isotope tracers were applied in the Ohau and Waikawa catchments of the Horowhenua Groundwater Management Zone to understand groundwater dynamics, source, and hydrochemical processes. The measurement of river and stream water age provided a detailed understanding of the ability of geologic formations to let rainwater enter into large groundwater systems with large groundwater stores. Groundwater age tracer results allowed for the identification of: groundwater recharge rates; areas of recharge and...
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