Volume 64, 2025 | Special edition

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Number 1 

• Helen Rutter and Jaco Fourie

  Nitrate-N concentrations in the Christchurch-West Melton Zone, Canterbury: an update based on newly available historical groundwater quality data

• Zeb Etheridge, Matt Dumon and Evelyn CharlesworthCauses and consequences of rising groundwater levels in the shallow Christchurch aquifer system

• Helen K. Rutter, Amandine Bosserelle, Marion R. Schoenfeld, Simon C. Cox, Julian J. Weir, Rachel Teen and Leanne K. MorganHistory and use of Ōtautahi/Christchurch’s shallow groundwater monitoring network

  
  

• Helen Rutter, Iain Haycock and Ross HectorGround source heat pump systems in Christchurch: history, issues and opportunities

  
  

• Lennard J. Brown and Carl R. HansonLate-Quaternary stratigraphy of the Christchurch Artesian System, coastal Canterbury Plains, New Zealand

  
  

• Len J. Brown, Lee F. Burbery, Helen Rutter, Michael K. Stewart and John H. Weeber

  The Christchurch Artesian System: a historical treatise

  
  

• Lee Burbery

  Christchurch groundwater exposed

  
  

• EDITORIAL

  
  
  
  

  Number 2 

• Sarah Innes, Jonathan Reed and Jessica Wang

  Modelling the supply–demand balance of New Zealand’s largest water supply system

• George A. Griffiths, Shailesh Kumar Singh and Alistair I. McKerchar

  Envelope curves for extreme floods in New Zealand

• Douglas A. Rankin and Isabelle Barrett

  Impact of the Opuha dam on the turbidity and health of the Opuha and Opihi Rivers

  
  

• A. David Knighton and Martin A. Evans

  Turbidity and suspended sediment in the Matakana River, Auckland

  
  

• Shailesh Kumar Singh and George Griffiths

  Spatial and temporal variation of baseflow index in New Zealand