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Waitekohe

The Waitekohe sub–catchment is located four kilometres south of Katikati, inside a 2178 hectare catchment area that flows from the Kaimai Range (750 metres above sea level) to the Tauranga Harbour. The Waitekohe sub–catchment is part of the Tauranga Ecological District; is 2 km wide, 11 km long, and is situated between Lund and Lockington Roads. With 100 km of stream margin and 4 km of harbour margin, the primary streams are the Waitekohe (10km length) and Tuapo Stream (4 km). All streams and tributaries in this sub–catchment are classified as aquatic ecosystem streams, and are recognised as migratory pathways for indigenous fish species. A large proportion of the vegetation land cover is pastoral, in which the majority of this land cover is found in the middle and lower sub–catchment of the Waitekohe. A smaller but significant proportion of the sub–catchments’ land cover is horticultural and primarily located in the lower catchment. The geology is derived from the Matua subgroup consisting of pumiceous, rhylolitic andesitic sand, gravel and mud. Soils are derived from air – fall ash and belong to the Katitkati soil series. Soils on the stream flats are recent and consist of fluvial sands, silts, gravels and boulders. These soils are versatile but vulnerable to erosion under poor vegetation cover.

Sites 3

Monitored sites in the Waitekohe catchment

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Scientific Indicators
Scientific data for this catchment

This dashboard shows information on the data collected by the regional councils for water quality indicators, analysed as state and trend.

The state for the catchment is represented by the median concentration for the parameter across all sites within the catchment and then compares that value to the quartiles for all monitored sites in New Zealand.

Click on the parameters state icons to compare this catchment with others in the region.

  • State

    State shows how the median of samples from this site compares to other sites

  • Trend

    Trend shows how the quality of water is changing over time. Depending on the sampling history duration, five and ten year timescales are available:

Can I trust this data?

The Cawthron Institute has worked alongside regional councils to verify the processes and methods used for data collection, laboratory analysis of samples collected and the statistical analysis and interpretation of the results presented.

If all Cawthron ticks are green, then you can trust this data. However, if one or more ticks are orange, then conclusions should be treated with some caution.

For more details on each tick, see our 'Can I Trust This Data?' Factsheet.

Can I trust the data?
Data Collection

All samples were collected using approved field protocols and have been analysed in accredited laboratories. Therefore the data shown here has been collected and analysed following best practice.

State

All samples were collected using approved field protocols and have been analysed in accredited laboratories.

Trend - Adjustment for flow

This data is not flow adjusted. National guidelines suggest that flow-sensitive variables are flow 'adjusted' before trend analysis. Therefore, any trends shown here may be affected by variations in flow across sampling occasions.

Bacteria

E. coli
State
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Trend
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Clarity

Clarity

Black disc
State
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Trend
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Clarity

Turbidity
State
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Trend
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Nitrogen

Nitrogen

Total Nitrogen
State
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Trend
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Nitrogen

Total Oxidised Nitrogen
State
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Trend
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Nitrogen

Ammoniacal Nitrogen
State
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Trend
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Phosphorus

Phosphorus

Dissolved Reactive Phosphorus
State
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Trend
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Phosphorus

Total Phosphorus
State
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Trend
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Download Data

.ZIP file of indicator readings for all sites in New Zealand
Download
Disclaimer

 LAWA Partners shall not be liable, whether in contract, tort, equity or otherwise, for any loss or damage of any type (including consequential losses) arising directly or indirectly from the inadequacy, inaccuracy or any other deficiency in information supplied irrespective of the cause.  Use of information supplied is entirely at the risk of the recipient and shall be deemed to be acceptance of this liability exclusion.