Rotorua Lakes operations Niroy Sumeran (



Download the 2021 Technical Workshop programme and abstracts document here.


  • Welcome

    Helen Shore

  • History of Hydrology in New Zealand

    Charles Pearson

  • NEMS for Freshwater Periphyton and Macroinvertebrates

    Juliet Milne

  • Acoustic Doppler Devices and Number Nuances

    Phil Hook

  • High Frequency Water Quality

    Lucy McKergow

  • Nitrate Monitoring

    Lee Burbery

  • NIWA Rating Tank

    Alec Dempster

  • Essential Freshwater Implementation – Working Together

    Christina Robb

  • Increased Demand for Data and Water Quality Monitoring

    Micah Dodge

  • Surface Velocity Measurements – An Aussie Update

    Mark Randall

  • Exhibitor Presentations

    (5 minutes each)

  • Oteha Weir Have All the Fish Gone?

    Amber Taylor

  • Monitoring Piha Trials (and Tribulations)

    Jonathan De Villiers

  • Low-Cost Open-Source Monitoring

    Ed Clayton

  • Superficial Flow Measurement

    Graeme Smart

  • Tracing Water through Karst Systems

    Morgan Harvie

  • Unexpected Insights and Applications of Subterranean Time Series Stage Data

    Carl Fischer

  • Irrigation Network Efficiency Crucial for Ensuring Sustainable Water Resource

    Daniel Wagenaar

  • The ‘Drone Flow’ Project and Methods for Determining Surface Alpha

    Hamish Biggs

  • Monitoring Canterbury Lakes – A Clearer Picture of Murkier Waters

    Alex Ring

  • NRC Region-Wide River Flood Model

    Bertrand Salmi

  • Responding to Challenges of a Changing Climate

    Max Mackay

  • Calibration of Tipping Bucket Rain Gauges – Expectation vs Reality

    Sam Edwards

  • Hydrometric Network Review

    Phil Downes

  • New Zealand Water Model

    Christian Zammit

  • Vietnam National Flood Forecasting

    Christian Michl

  • Optical Bathymetry Toolkit

    Matthew Gardner

  • Space Time Image Velocimetry (STIV) use in Southland

    Michael McDonald

  • A New AI Tool for Autonomous Underwater Weed Surveillance

    Jeremy Bulleid

  • Environment Canterbury River Network Tool

    Ben Throssell & Monica Jasper

  • Micro Purge Techniques for Groundwater Sampling

    Dirk van Walt

  • Evolution of Gas Bubbler & Dry Transducer Sensors for Accurate Water-level Measurement

    Nathan Tubb


Our mission is to support and foster hydrology in New Zealand and elsewhere, and to enable NZHS members to receive advanced training in hydrological sciences. NZHS annually presents several student and non-student awards to its members recognising the outstanding contributions of our members to New Zealand Hydrology.


New Zealand Hydrological Society

PO Box 12300, Thorndon,
Wellington 6144

Phone: 03 928 0620


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