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Reconciliation of hydro inflow datasets

OPUS International and the National Institute of Water and Atmospheric Research (NIWA) carried out a comparison of hydrological inflow data series published in the Spectra Update reports and on the Comit Hydro site.

These series include inflows at:

• Lake Taupo (actual and natural)
• Lakes Ohau, Pukaki, and Tekapo
• Lakes Wanaka, Wakatipu and Hawea
• Lakes Te Anau and Manapouri.

This work is important in terms of:

• understanding which data series in the Spectra Update correspond to which series in Comit Hydro;
• understanding the extent of any differences between the datasets (which should, in principle, be somewhat consistent); and
• motivating continual improvement in the quality of hydro inflow data and documentation.

Work is continuing on identifying the reasons for observed differences.

Back to top Last updated on 23 March 2011