Freshwater

We provide public information on river, lake, and groundwater conditions across New Zealand including freshwater quantity and quality.

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    Glossary

    Some of the terms used in this atlas may be unfamiliar to amateur biologists, and so I provide this glossary.
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    Frequently asked questions about WAIORA

    Frequently asked questions about WAIORA
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    Water Allocation Impacts on River Attributes (WAIORA)

    WAIORA is a decision-support system designed to provide guidance on whether a water abstraction or discharge could have adverse impacts on a number of environmental parameters.
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    Quick-guides to freshwater flora and fauna

    These guides are designed for rapid identification of freshwater flora and fauna, usually to the generic level, for use in biomonitoring.
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    Weed management

    Find out how to manage aquatic weeds.
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    Species guide

    Aquatic plants have different lifeforms and habitats.
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    Education

    Learn more about aquatic plants.
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    Publications

    Publications related to this section.
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    Outreach

    Aquatic plant overview, weed management options & freshwater plant ID guides.
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    Trophic table

    Trophic preferences and range for submerged plant species in NZ lakes.
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    Definition of terms and phrases

    Definitions of terms used in this section.
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    Resource survey and information

    An ability to discover basic information about plants in waterways is the foundation to solving a spectrum of problems that face our freshwaters today.