Freshwater

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

  • Pulp and paper

    Wood chips and plant material make pulp that is used to produce paper products.
  • Dry stock

    Dry stock farming consists predominantly of pasture grazing beef cattle, sheep, and deer for meat, wool, and velvet production.
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    Kōura

    There are two species of kōura or freshwater crayfish in Aotearoa.
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    Caddisflies

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    Mining activities

    A range of different mining techniques have been developed to obtain these valuable resources
  • Water dams

    Damming water for urban use, hydro-electric power generation, irrigation, and other industrial and commercial uses.
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    What ails our estuaries - problems and solutions

    Estuaries are at the bottom of the freshwater drainage network and, effectively, are a part of it. This means that every time we act to protect and enhance streams and rivers we are also benefiting the estuary at the downstream end.
  • Mitigation and best practice options

    Here are some simple steps to minimise the effects of dairying on water quality and mahinga kai.
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    Water clarity

    Water clarity or turbidity is the cloudiness or haziness in a fluid caused by individual small particles (suspended solids).
  • Nature knows best?

    Feature story
    Returning water to our waterways after we’ve used it in our homes, on farms and in industry is a complex and challenging process.
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    Tuna - life cycle and leptocephalii

    Freshwater eels have an unusual life cycle which sees them travelling between the ocean, estuaries and freshwaters.
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    Tuna - habitat

    Tuna are found in all sorts of habitats (places), including coastal estuaries, lakes, wetlands, rivers, mountain streams and even alpine tarns.