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Southland region

Surface Water Zone: Waikaia Surface Water Zone

The Waikaia surface water zone covers the Waikaia River catchment down to the Mahers Beach flow recorder site, below the Waikaia township.

Much of the Waikaia Valley is in native beech forest with the land being administered by the Department of Conservation. In its middle and lower reaches below Piano Flat, the Waikaia River meanders across its floodplain until its confluence with the Mataura River, near Riversdale. The surrounding land in this area is productive farmland. In recent years, irrigation of farmland in this area has become increasingly popular, with an associated change in land use to dairy farming. The Waikaia River and its tributaries provide people with many recreational opportunities. Aside from gold mining, the rivers and streams in this zone also provide ideal bathing spots for holiday makers in the summertime. Large numbers of anglers also fish the streams in this area, which support healthy brown trout fisheries. Environment Southland has a large network of automatic climate and water level recorder stations within the Waikaia surface water zone. Currently, there are few surface water abstractions from within the Waikaia surface water zone. As such, water allocation levels are low. As the Waikaia River is the main tributary of the Mataura River, it too is governed by the Mataura River Conservation Order, which acts to limit the amount of water able to be allocated.

Water Use
Surface Water in this Zone

Regional councils collect information about how much water is available and manage resource consents for those wishing to take water from rivers and streams. Use the buttons below to view information on: how much water is available, where it comes from and how its used.


Rainfall {{waterAvailable.rainfall}} Runoff to sea {{waterAvailable.runoff}} Surface Water available: {{waterSource.availableToAllocate}} Irrigation
Town supply
  • How much surface water is there in this zone?

    Rainfall and flow in this surface water zone

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    Rainfall and runoff

    Relative breakdown Source Volume
    Rainfall total:
    {{waterAvailable.rainfall }}
    rainfall Rainfall Total {{waterAvailable.rainfall}}
    Runoff total:
    {{waterAvailable.runoff }}
    runoff Runoff to sea {{waterAvailable.runoff}}

    The table above shows the average amount of rainfall the water management zone receives each year and how much of that flows out to sea. These are approximate figures only.

  • Water consents: How much water is consented and used?

    Surface water available to consent

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    Consented water in this surface water zone

    Use the tables below to look at how much water is available compared with how much is actually consented within this water management zone. Click the plus to expand subzones where available

    Comparing consents and use
    Amount available to consent In this surface water management zone:
    {{}} {{}}
    available to consent
    Amount consented
    measured and non measured
    Amount used (measured)
    Amount Units Consented or used as a percentage of available
    Total available to consent {{}} {{}} {{}}
    Total consented {{}} {{}} {{}} {{}}
    Total consented and measured {{}} {{}} {{}} {{}}
    Total measured amount used {{}} {{}} {{}}
    Total measured volume used {{}} {{}}

    The table above shows the amount of water that is available for use compared to the amount that has been consented. The ‘Total Consented’ and ‘Total Consented and Measured’ fields are based on percentages of the ‘Total available to Consent’ field. If this field is not populated no data will be displayed. Some consents require actual use to be monitored and this is presented as 'Total measured volume Used' where available.

  • Water consents: How is consented water used?

    Consents by use in this surface water zone

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    Consented water

    Overall annual volume for {{waterAvailable.year}}
    Relative breakdown
    Activity Percentage of total consented Total volume Number of consents
    {{item.displayText}} {{item.displayText}} - - No data available {{item.breakdownPercentage}}% {{item.totalVolume}} m3 {{item.numberOfConsents}}
    Total {{}}% {{}} m3 {{}}

    The above table shows the proportion of water consented for irrigation, industrial, stock, town supply and other. It excludes hydro electricity. In this region/management zone {{hydroUsage.totalVolume}} m3/year is consented for hydro-electricity and makes up {{hydroUsage.percentageConsented}}% of the total water volume consented for this region/management zone


Monitored sites in this Zone

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No sites found.