Orakei Basin improvements

Introduction | Current works | Current management approach | History and ecology

Current management approach

Following a detailed evaluation of the options, Auckland City Council believes that the basin should continue to be impounded with regular fortnightly flushing. This is based on the following key conclusions:

• Orakei Basin is a significant recreational water body, unique in the Auckland region
• a return to a tidal environment would result in a complete loss of water-based recreation
• the resulting tidal environment would not be considered a return to a natural environmental state due to the ongoing restriction from the rail embankment
• maximised flushing will require a significant increase in operation but will not result in any significant improvement of water quality or environmental values
• the current programme is practical because it coincides with peak tides and is frequent enough to avoid water quality problems in the basin.

Options (66kb PDF)

Technical reports

Please note: some of the following files are large and may take several minutes to download.

Assessment of management options

• Assessment of management options for Orakei Basin (1mb PDF)

Orakei Basin review of flushing regime options

• The report (419kb PDF)
• Appendix A - Water level monitoring (279kb PDF)
• Appendix B - Maps of useable water area (2.4mb PDF)
• Appendix C - Water quality modelling graphs (746kb PDF)
• Appendix D - Gate survey summary data (35kb PDF)

For more information contact us.

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Updated April 2010.