Rivers

New Zealand has more than 70 river systems. NIWA capability supports the measurement, knowlege and tools need to manage, protect and restore these vital waterways and their ecosystems.

  • New weapon in fight against invasive aquatic weeds

    Media release
    A combination of artificial intelligence and scientific ingenuity looks set to be the next step forward in protecting Aotearoa New Zealand’s lakes and rivers from invasive aquatic weeds.
  • Trustpower's Waipori power scheme

    or over 100 years Trustpower's Waipori power scheme has supplied Dunedin with hydroelectric power.
  • NIWA calculates 1:200 year flood for parts of Canterbury

    Media release
    Preliminary analysis by NIWA climate scientists has shown that the recent Canterbury rainfall was so extreme in some inland places that it could be expected to happen only once every 200 years.
  • Field teams and forecasters cover monumental rainfall event

    Feature story
    The prodigious rainmaker that hit Canterbury earlier this month saw NIWA field teams out in the elements collecting flood data from bridges, cableways and jetboat gaugings.
  • eFlows Explorer

    Research Project
    The eFlows Explorer webtool is designed to aid broad-scale river flow management planning across New Zealand
  • NIWA seeks help from skiers and snow bunnies

    Media release
    A NIWA scientist is asking for the help of skiers, mountaineers and alpine professionals to collect snow for a new research project.
  • NIWA in the field: Sampling the Waimakariri

    Feature story
    Environmental monitoring technician Patrick Butler has spent hours travelling between the upper and lower reaches of Canterbury’s Waimakariri and Hurunui Rivers. His mission – river water quality sampling.
  • The future shape of water

    Feature story
    Susan Pepperell looks at some of the tough decisions looming around access to freshwater and how science is helping with solutions.
  • How does a fish climb a ramp? Very, very cleverly…

    Feature story
    New Zealand’s native fish are doing their best to climb up ramps in a NIWA laboratory so scientists can learn how to better help them navigate our tricky waterways.
  • Freshwater species show vulnerability to climate change

    Media release
    A new study has identified seven freshwater species native to Aotearoa-New Zealand that will likely be highly or very highly vulnerable to climate change.
  • Maniapoto Cultural Assessment Framework

    Research Project
    Te Nehenehenui (previously Maniapoto Māori Trust board) and NIWA are working collaboratively to support Ngāti Maniapoto whānau to reconnect with and participate in the assessment of their freshwater according to their values.
  • The world's most mysterious fish