Irrigation New Zealand

INZ, in conjunction with Fish & Game, Department of Conservation and Environment Canterbury, have been coordinating research into the effectiveness and applicability of fish screening methods used in New Zealand. Screens of various construction techniques have been tested using live fish. The initial project aimed to update the NIWA “Good Practice guidelines.” However, the specific testing was unable to definitively test each criteria, so the end result is a findings report to be read in conjunction with the NIWA guidelines. Each individual screen test and the findings report are available.

Results to date reveal the two main factors for effective fish exclusion are:

  1. the design and provision of the by-pass components
  2. regular maintenance of the fish screen

The findings report goes into more detail on these and other points. Further trials are planned to test the importance and impact of different mesh size.

Screen Evaluations Findings report

Fish Screening: Good practice guidelines

Selwyn DC screen evaluation

Acton screen evaluation

Mead screen evaluation

North Otago Irrigation Company screen evaluation

Totara Valley screen evaluation

Levels Plains screen evaluation draft report

DIDSON Monitoring at Levels Plain Intake letter

EVENTS

Wednesday 18 July

09:00 am - 16:00 pm

Water Meter Verification Workbook training day.

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Thursday 6 September

10:00 am - 16:30 pm

Irrigation Operator and Manager Training Day, Ashburton on Thursday 8th March.

Venue: Ashburton Trust Event Centre

Tiime: 10am-4pm

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Thursday 27 September

10:00 am - 16:30 pm

One day Irrigation Operator and Manager Training to be held in Lincoln at the Lincoln University Research Dairy Farm

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