Open Channel Flow NEMS Workshop


Christchurch 5th - 6th September 2017




The National Environmental Monitoring Standard for Open Channel Flow was released in June 2013.  The document details methods for measuring dischagre in open channels in New Zealand and can be found here


Workshop Programme:


The workshop covered 


NEMS Rating Curves Workshop


Christchurch 26th-28th July 2017




The National Environmental Monitoring Standard for Rating Curves was released in February 2016.  The document details methods for constructing stage-discharge and velocity-index rating curves in New Zealand and can be found here 


Workshop Programme:


The main workshop will be on 27th and 28th July.  Click HERE for further details. 




2017 Technical Workshop 3-6 April 2017, Dunedin

This year's theme was "Are You Making a Difference in Field Hydrology" with over 100 people in attendance.


Full details of the workshop can accessed by downloading the workshop flyer here.




The presentations can be accessed from here


Workshop Presentations







The WMO/IAHR/IAHS International Hydrometry Workshop on recent advances in technology and uncertainty analysis was held in Queenstown, New Zealand on Monday 28 November 2016 as a workshop of the 56th New Zealand Hydrological Society & 37th Australian Hydrology and Water Resources Symposium joint conference. Lecturers from New Zealand, Japan, Korea, France will present and discuss on recent advances in streamgauging techniques, air-borne measurements and uncertainty computations.

The workshop program is available here. 

Workshop Program

Individual presentations can be viewed and downloaded using the link below to access a dropbox folder. (Note some of the presentations are large) 

Workshop Presentations




The NZ Hydrological Society Ratings Workshop

A workshop on constructing and maintaining rating curves - examining international perspectives was held in Christchurch  11th- 12th April 2016 with over 30 in attendance.

The workshop program is available here. 


Ratings Workshop Program


Individual presentations can be viewed and downloaded from the links below.

Introduction to Methods Around the Globe  
Terry Kenney USGS
Stu Hamilton Canada
Jerome Le Coz France
Ray Maynard Australia
Marianne Watson New Zealand
Other Presentations  
Terry Kenney ISRCP Survey
Graeme Horrell Assessing Changes
Jerome Le Coz Quantitative Methods
Martin Doyle Qualitative Methods
Ray Maynard Complex Ratings
Marianne Watson Software and Standards
Marianne Watson Maintaining Ratings Realtime
 Breakout Notes  
Combining Prior Knowledge  
Evaluting Rating Curve Reliability  
Field Data to Collect  
Maintaining Ratings Realtime  
Re-analysis of Past Ratings  


All presentation can be downloaded at once using the following link

Ratings Workshop Presentations



2016 ADCP Regatta

There was an ADCP regatta held on the 4 April 2016 the day before the 2016 NZHS Technical Workshop.

Check out the action using the following link.

Flow 0.705 m3/sec


The NZ Hydrological Society Technical Workshop

The 2016 NZHS Technical Workshop was held in Gisborne on 5th- 6th April with over 85 in attendance.

The workshop program including abstracts is available here. 

2016 Technical Workshop Program


Individual presentations can be viewed and downloaded from the links below.


Jerome Le Coz

Non Intrusive Flood Gauging Techniques

Terry Kenney

Index Velocity for Computing Streamflow

Use of Acoustic Doppler to Monitor Sediment

Rating Curve Methodology for USA

USGS - Water Quality Information

USGS - Quality Assurance Practices 

Evan Baddock Dilution Gauging Results
Thomas Wilding Flow measurements in slow, weedy streams - the Rising Bubble Method
Mic Clayton Australian ADCP Regatta
Brent Watson Gisborne ADCP Regatta
Peter Hancock Starting from Scratch
Evan Baddock Online Learning Resources
Ed Clayton Adaptive Environmental Monitoring
Lizze Fox Getting across to consumer the quality of data
Dirk van Walt Gas monitors: How they keep you safe on site
Emma Chibnall Oil in accumulation rain gauges
Daniel Wagenaar Acoustic Doppler Technology
Stuart Hamilton De-mistifying stage discharge rating curves
Angela Perks Environmental Monitoring Health and Safety Report for Simplified Risk Assessment
Eric Stevens The challenges of Water Quality Monitoring in remote Doubtful Sound
Ken Klaasen Changing Groundwater Monitoring in southern inland Queensland
Brent Watson Changing face of open data access and develpoment of national federated structure
Lennie Palmer Meeting changing obligations 
Evan Baddock

Breakout Session - Health and Safety

Breakout Session - Quality Coding

Breakout Session - Rating Methods

Breakout Session Summaries


All presentation can be downloaded at once using the following link


2016 Technical Workshop Presentations




For Further Information please contact: Mike Ede, DDI: +64 3 520 7409,



National Environmental Monitoring Standards (NEMS) for Rainfall Recording have been in place since June 2013. Discussion at a recent Hydrological Society Workshop in Greymouth indicated organisations from around the country are at different stages of implementation, and interpreting the NEMS for Rainfall Recording was seen as quite a subjective process. Bringing together data processing practitioners to discuss various methods will enable a more unified approach to quality coding our valuable rainfall datasets. Other NEMS Standards may be covered at future workshops.

Topics covered:

          • Review Rainfall Recording key terms and concepts
          • Validation and verification
          • Assessing NEMS requirements and assigning quality codes
          • Working with real examples of standard and non-standard data and applying quality codes
          • Value of quality data and reporting

Christchurch Groundwater Energy Seminar

12 June 2015

The Geothermal Heat-pump Association of NZ is presenting a Christchurch Groundwater Energy Seminar, sponsored by Central Heating NZ, in conjunction with Climaveneta and the NZ Hydrological Society.

Presentations Available Here

Click HERE for more details 


2015 ADCP Regatta

There was an ADCP regatta held on the 11 March the day before the 2015 NZHS Technical Workshop.

Check out the action using the following link.

Flow 7.8 m3/sec



The NZ Hydrological Society Technical Workshop

The 2015 NZHS Technical Workshop was held at Shantytown in Greymouth, on 12th-13th March with over 75 in attendance.

The workshop program including abstracts is available here. 

2015 Technical Workshop Program

Presentations can be viewed and downloaded from the links below.

Kent Steel Rainfall Data Dissemination
Mic Clayton Dont Touch the Water - Investigating the potential of non contact radar doppler
Dirk van Walt Groundwater sampling and purge techniques
Daniel Farrow Step Tests
Andrew Willsman

Testing Hydroacoustic Instruments

Brent Hutchby The BOPRC Lysimeter Network
Abigail Lovett Use of temperature sensing techniques for investigating groundwater-surface water interaction
Lennie Palmer Acoustic Doppler Current Technology - not just gauging
Evan Baddock USGS Hydroacoustic highlights, updates, developments and QA issues
Cargill Henderson Counting the cost - how much are we paying for non-standard data formats?
Cindy Lowe Soil Moisture Trial Results
Rod McKay Supervisory Contorl and Data Acquisition for an Irrigaiton Scheme
Emily Dinsdale GeoPHONE: An android app for GeoRURAL
Andrew Willsman ADCP Regatta Update
Dirk van Walt Level Loggers vs Absolute
David Plew Flow measurment methods in a macrophyte-filled streams

For Further Information please contact: Mike Ede, DDI: +64 3 520 7409,


Prizes and awards will be given out with the highlight being the Best Young Presenter:

This prize includes free registration to the 2016 AHA conference and $1500 towards travel and accommodation which is kindly sponsored by Envco.



The NZ Hydrological Society Technical Workshop

This workshop was held in New Plymouth and focussed on "Managing New Technologies and Methods" . More than 90 people were in attendance over the two days in May 2014.

The workshop program including abstracts is available here:

2014 Technical Workshop Program

Presentations can be viewed and downloaded from the links below.

Blair Sowman - Micah Dodge Developments in Rainfall Validation and Exposure
Nick Holwerda Rainfall and Oil
Hayden McDermott Measuring Solid Precipitation in a Harsh New Zealand Environment
John Bourke - Annie Yeates New Zealand Diploma in Field Hydrology - Update
Matt Rowland

Land Drainage Pump Station Discharge - Part 1

Land Drainage Pump Station Discharge - Part 2

Andrew Willsman High flow rating change at the Clutha river flow station - instrumentation or control?
Nick Holwerda - John Fenwick Case Study - Will an Acoustic Profiler be as good as a weir?
Thomas Wilding Benefits of the Sontek-Iq for monitoring flow in a weedy stream
Paul Hannah Heli Gauging Update Two Years On
Andrew Willsman Inter-Agency Regatta
Phil White Workshop: What is our NEMS readiness?
Cargill Henderson Workshop: What is our NEMS readiness? - Aqualinc
Stephen Hay - Ben Walden Workshop: What is our NEMS readiness? - Boraman Consultants
Lennie Palmer - Laura Marra Workshop: What is our NEMS readiness? - Trustpower
Brett Cockeram Iwi Partnership in Environmental Monitoring
Dirk van Walt Water Quality Meters - Best Practise Onsite
Wendy Purdon Clear as Mud: The Porirua Harbour Dilemma
Mark Rodgers Hilltop Server: What is does and how it uses emerging standards
Neva Vaitupu Quality Codes - ORC's implementation and understanding
Christian Michl Connecting field data to hydrological data management and web solutions
Graham Elley Workshop: What innovations does NZ freshwater need?
Phil Downes Workshop: A major issue in hydrology: How to maintain a rating real time?

For Further Information please contact: Mike Ede, DDI: +64 3 520 7409,


The NZ Hydrological Society Technical Workshop 2013
"Where have we come from, and where are we going?"
- a timeline of operational hydrology
February 21st-22nd, Palmerston North, New Zealand

This is a two day Technical workshop focused around operational hydrology and how it has been shaped over time both in New Zealand, and globally. 

From manual observational data, to automated real-time telemetry, from charts to computer screens and from mechanical current meters to acoustic Doppler profilers.  We live in a time where new technology is constantly being developed to make our measurements more precise, more accurate, and more widely availalbe.  But where did all of this come from? What are the humble beginnings of hydrology? How have those beginnings shaped the hydrology of today? And what does the future of hydrology look like?

Change and Improvment in Operational Hydrology
Trafalgar Park, Nelson, Thursday 10th - Friday 11th May 2012
Operational hydrology changes quicker by the year.  New technology replaces traditional equipment and techniques, and a number of initiatives such as the development of Monitoring Standards and Qualifications are underway.  Our challenge is to realise the benefits of new technology and methods, wihile improving accuracy, compatibility and standardisation across the industry.  This workshop in early May was a forum to allow technical staff involved in operational hydrology to keep up to date with changes, and contribute to the future of the industry.

Meeting the Challenges of Water Allocation: Learning from each other
October 5-6, 2009, Wellington Convention Centre, Wellington
This workshop gave practitioners of water allocation in New Zealand a chance to learn techniques and tools for effective water allocation in different regions with presentations from keynote speakers andregional representatives, and breakout sessions to discuss key issues such as: alternatives to the first in first served system; defining seasonal quotas for active management of water resources; recognition of security of supply in changing climate and setting limits with incomplete information.

Contact: Tim.Davie at

Environmental Monitoring in Urban Areas
The New Zealand Hydrological Society held a one day workshop in Auckland on Tuesday 5th May 2009.  The day was spent in the field looking at the issues, techniques and technologies related to monitoring urban flows and contaminants, with visits to NIWA and Regional Council sites around central Auckland.  The visits and discussion were targeted at people with an interest in technical hydrology or water quality monitoring.

Contact: martin.doyle at

NZ Hydrological Society Technical Workshop on:
Practical Steps to Address Regional Climate Variability Impacts on Water Resources
April 3-4 2008 at the Marlborough Convention Centre, Blenheim

Contacts: Joseph Thomas:  joseph.thomas at  or Mike Ede: med at

NZ Hydrological Society Workshop on Water Economics
Nelson 13 & 14 February 2005
Contact Paul White, IGNS, Private Bag 2000, Taupo
Phone 07 374 8211; Email p.white at

General information

Apart from at the Annual Symposium, the NZHS generally runs 2 workshops a year, often in association with other groups or organisations. Workshops are a great way of sharing knowledge and discussing current hydrological issues outside the NZHS annual symposium. Topics have included coastal aquifer management, hydrology and wetlands, hydrological archives, etc.

NZHS workshops are organised when members identify a need for a forum. The need could include general dissemination of information, the discussion of topical issues and/or the need to find solutions to hydrology-related problems. Financial support is available (subject to Executive approval) to NZHS members who require assistance to develop and/or run a workshop.

If you wish to suggest a topic, run a workshop, or need more information, please contact:
Tim Davie ( or
Society administration.

The Society is grateful to Aqualinc for their annual sponsorship.