Groundwater-surface water interaction in the Waimakariri river, New Zealand, and groundwater outflow from the river bed
2012; New Zealand Hydrological Society; Volume: 51; Issue: 1 Linguagem: Inglês
ISSN
0022-1708
AutoresPaul White, Erika Kováčová, Gil Zemansky, Nadia Jebbour, Magali Moreau,
Tópico(s)Hydrology and Watershed Management Studies
ResumoThis assessment of the interaction between groundwater and surface water in the braided Waimakariri River, New Zealand, between Waimakariri Gorge and Old State Highway Bridge identifies five reaches of the river bed that lose groundwater to the surrounding Holocene-age Springston Formation gravel aquifer. Steady-state groundwater outflow from the river bed in the reaches between Courtenay and Old State Highway Bridge totals 12.9 m3/s, providing the major source of groundwater for the Christchurch City area. Groundwater use in the Christchurch City area averages 1.7 m3/s and baseflow in spring-fed rivers and streams is an estimated 10.9 m3/s.
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