Narvaiza, M.; Berhe, D.T.; Gard, H.J.L.; Morgenstern, U.; Strogen, D.P.; Te Koha, T.A.; Lawrence, M.J.F.; Trompetter, V. 2025 Drilling and aquifer testing report for Hicks Bay, Te Araroa, Waiapu and Poverty Bay in Gisborne region. GNS Science consultancy report 2025/81; Aqua Intel Aotearoa report 2025/02. 50 p. https://doi.org/10.21420/PZHV-4K43
Abstract
This report has been developed by Aqua Intel Aotearoa (AIA) – a collaboration between the Regional Economic Development & Investment Unit (Kānoa) and GNS Science (GNS) and contributes to Phase 3 work within the Gisborne region. As part of this Gisborne project, four new wells (GRC015, GRA006, GRB074 and GRB076) were drilled by AIA between February and March 2024 in the Waiapu catchment to support: (1) Airborne Electromagnetic (AEM) SkyTEM data interpretation and (2) water budgeting assessment. In addition, 15 wells were drilled by Gisborne District Council (GDC) in Hicks Bay, Te Araroa, Waiapu and Poverty Bay between November 2023 and March 2024. This report describes the collective analyses done on all 19 wells, which includes results of lithological description, grain-size, resistivity, groundwater chemistry and dating, radiocarbon sediment dating and hydraulic conductivity undertaken on the drill core, and slug testing. (auths)
