Compliance notification forms

New Zealand has more than 50 species of native freshwater and sports fish. It’s important that instream structures such as culverts and weirs are designed to allow for fish passage, so that fish can move upstream and downstream between different river and stream habitats and complete their lifecycle.

Culverts, weirs, flap gates, fords and dams installed after 3 September 2020 must meet minimum reporting requirements such as height, width and location under the Essential Freshwater regulations and the National Environmental Standards for Freshwater. Culverts, weirs and flap gates must meet minimum environmental conditions for fish passage and may need a resource consent.

While the new regulations do not apply to instream structures installed before 3 September 2020, it is still important to ensure those structures provide for fish passage. There are options for remediating or retrofitting structures to help fish passage.

Under national and regional rules, the installation, alteration, maintenance, and removal of some structures is a permitted activity – and therefore does not require resource consent – only if you can meet the specific requirements.

The information specified in the regulations must be collected and provided to the relevant regional council, together with the time and date of its collection, within 20 working days after the activity is finished.

The Freshwater NES also sets requirements for carrying out certain activities within or within a 10-metre setback of a natural wetland and the harvesting of sphagnum moss. Anyone carrying out these activities will need to comply with the standards.


Related information

Essential Freshwater regulations
National Environmental Standards for Freshwater
Regional rules - fish passage and instream structures
Essential Freshwater wetlands factsheet


Notification forms


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