Freshwater

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

Rachel Crawford and Paul Franklin inspecting a fish passage on the Waikato River.

Freshwater and Estuaries Update

A seasonal review and outlook for New Zealand's water resources, and an update on NIWA's freshwater research

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    Monitoring and maintenance

    Once you have identified the problem, and applied the necessary tools for restoring fish to your stream, the next phase of your project is to monitor the stream site to see whether restoration works.
    Freshwater quality

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    Tools

    The tools available for restoring native fish to streams depend on what is causing fish to decline.
    Fisheries

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    Identifying the problem

    Identifying the factors causing fish numbers to drop will allow you to determine which restoration tools you need to employ.
    Fisheries

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    Chemical contamination and energy

    What are the potential sources of chemical contamination from energy generation activities?

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    Riparian vegetation and energy

    How do energy generation activities potentially impact riparian vegetation around a waterway?

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    Water take and energy

    How do energy generation activities potentially influence water flows?

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    Instream barriers and energy

    How do instream barriers as a result of energy generation activities potentially influence water resources?

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    Infectious substances, meat and dairy

    What are the sources of infectious substances from the meat and dairy processing industry?

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    Infectious substances and urbanisation

     

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    Infectious substances and agriculture

    What are the sources of infectious substances from agriculture?

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    Water resources, meat and dairy

    How may the activities of the meat and dairy processing industry impact water resources?

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    Chemical contamination, meat and dairy

    What are the potential sources of chemical contamination from meat and dairy processing facilities?