Lake levels

Waitaki hydro scheme

Meridian manages about 50 percent of New Zealand's total hydro storage, operating the Waitaki hydro scheme and the Manapōuri hydro station.

The Waitaki hydro scheme includes eight power stations from Lake Tekapo to Lake Waitaki in the MacKenzie Basin. Meridian operates stations at Lake Ōhau, Benmore, Aviemore and Waitaki, and Genesis Energy operates the two stations linked by the Tekapo canal.

  • The measurements are shown in metres above sea level. The minimum consented level of Lake Pūkaki is 518.0m. Levels above 532.5m are subject to minimum outflow requirements.

    Operation outside this range is allowable in compliance with the duration and return periods set out in the lake operating rules.

    These levels shown are provisional and are indicative only and for general information purposes, and do not try to show what actual levels will be at any particular time or place. If you intend to use the hydro lakes for any recreational or other purpose, please ensure that your activity can be safely carried out if the actual water levels change.

    Meridian voluntarily reports hydro spill as part of the Voluntary Hydro Spill reporting regime.

    Lake Pūkaki lake levels Lake Level Graph
  • The measurements are shown in metres above sea level. The minimum consented level of Lake Ōhau is 519.45m. Levels above 520.4m result in water discharging over the outlet weir and into the Upper Ōhau River. Levels above 520.25m are subject to minimum outflow requirements via the Ōhau Canal.

    These levels shown are provisional and are indicative only and for general information purposes, and do not try to show what actual levels will be at any particular time or place. If you intend to use the hydro lakes for any recreational or other purpose, please ensure that your activity can be safely carried out if the actual water levels change.

    Meridian voluntarily reports hydro spill as part of the Voluntary Hydro Spill reporting regime. 

    Lake Ōhau lake levels Lake Level Graph
  • The measurements are shown in metres above sea level. The minimum consented level of Lake Aviemore is 265.5m. Levels above 268.3m are subject to minimum outflow requirements.

    These levels shown are provisional and are indicative only and for general information purposes, and do not try to show what actual levels will be at any particular time or place. If you intend to use the hydro lakes for any recreational or other purpose, please ensure that your activity can be safely carried out if the actual water levels change.

    Meridian voluntarily reports hydro spill as part of the Voluntary Hydro Spill reporting regime.

    Lake Aviemore lake levels Lake Level Graph
  • The measurements are shown in metres above sea level. The minimum consented level of Lake Waitaki is 227.0m. Levels above 230.8m result in water discharging over the concrete weir.

    These levels shown are provisional and are indicative only and for general information purposes, and do not try to show what actual levels will be at any particular time or place. If you intend to use the hydro lakes for any recreational or other purpose, please ensure that your activity can be safely carried out if the actual water levels change.

    Meridian voluntarily reports hydro spill as part of the Voluntary Hydro Spill reporting regime.

    Lake Waitaki lake levels Lake Level Graph
  • The measurements are shown in metres above sea level. The minimum consented level of Lake Benmore is 355.25m. Levels above 361.45m are subject to minimum outflow requirements.

    These levels shown are provisional and are indicative only and for general information purposes, and do not try to show what actual levels will be at any particular time or place. If you intend to use the hydro lakes for any recreational or other purpose, please ensure that your activity can be safely carried out if the actual water levels change.

    Meridian voluntarily reports hydro spill as part of the Voluntary Hydro Spill reporting regime.

    Lake Benmore lake levels Lake Level Graph
  • The measurements are shown in metres above sea level. The main operating range for Lake Te Anau (as defined by the Lake Level Guidelines 2002) is between 201.5 and 202.7 metres above sea level. Operation outside this range is allowable in compliance with the guidelines.

    These levels shown are provisional and are indicative only and for general information purposes, and do not try to show what actual levels will be at any particular time or place. If you intend to use the hydro lakes for any recreational or other purpose, please ensure that your activity can be safely carried out if the actual water levels change.

    Meridian voluntarily reports hydro spill as part of the Voluntary Hydro Spill reporting regime.

    Lake Te Anau lake levels Lake Level Graph

Manapōuri power station

The Manapōuri power station is New Zealand's largest hydro station. Situated in Fiordland, the catchment area of Lakes Te Anau and Manapōuri receives some of New Zealand's highest rainfall. These two lakes are linked by a river system, providing water for generation at Manapōuri.

  • The measurements are shown in metres above sea level. The main operating range for Lake Manapōuri (as defined by the Lake Level Guidelines 2002) is between 176.8 and 178.6 metres above sea level. Operation outside this range is allowable in compliance with the guidelines.

    These levels shown are provisional and are indicative only and for general information purposes, and do not try to show what actual levels will be at any particular time or place. If you intend to use the hydro lakes for any recreational or other purpose, please ensure that your activity can be safely carried out if the actual water levels change.

    Meridian voluntarily reports hydro spill as part of the Voluntary Hydro Spill reporting regime.

    Lake Manapōuri lake levels Lake Level Graph
  • Lake

    Lake area at normal maximum control level

    Average lake level above sea level

    Te Anau 352                                          202.2                    
    Manapōuri 141 177.7
    Pūkaki 179.5 527.7
    Ruataniwha 4.9                   458.7
    Ōhau 61.2 519.8
    Benmore 74.5 361.1
    Aviemore 28.8 268.1
    Waitaki 6.2 230.2

Current snow storage

Meridian collects information on the amount of water stored as snow so we can estimate its impact on inflows.