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Document library Instream Flow Assessment for the Otukura Stream Stage 2: Instream Flow Requirements

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Category
  • Environmental monitoring > Water quality
  • Title Instream Flow Assessment for the Otukura Stream Stage 2: Instream Flow Requirements
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    Date published 1 May 2008
    GWRC Publication No GW/EMI-T-08/70
    Abstract In this report the instream flow requirements of the Otukura
    Stream are assessed with the objective of improving
    ecological values. The model WAIORA is used to investigate
    the relationship between stream flow and water temperature/
    dissolved oxygen. It was found that high water temperatures
    may occur but are unlikely to be avoided through flow
    management alone. dissolved oxygen is a potentially critical
    factor for the Otukura Stream during times of low flow. The
    report recommends a minimum flow of 95 L/s to avoid low
    dissolved oxygen concentrations, and this should be
    considered for the Regional Freshwater Plan.

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