Search all sites near me now
Search your favourite swimming spots
Warning in effect for sites in this regionRead more

Canterbury region

River Quality

Increased demand for freshwater in Canterbury, particularly for farming and business activities, means that these resources need careful monitoring and measurement to achieve effective and sustainable water allocation and management.

To this end, Environment Canterbury maintains a large network of several hundred water quality monitoring sites throughout the region, plus groundwater recorders and rainfall recording sites.

The Regional Council has also played a key role in the development, funding and implementation of the Canterbury Water Management Strategy. Launched in October 2009, the strategy is a vision for the sustainable use of water and a unique approach to complex water allocation and management issues.

Canterbury has been experiencing declines in water quality in recent years, with lowland streams having the poorest quality. Immediate steps to improve water quality, for instance by enhancing biodiversity along waterways, have been built in to the Canterbury Water Management Strategy from the outset.

Catchments 70

Freshwater catchments in Canterbury region

Scientific Indicators
Scientific data for this region

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

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

  • 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. Therefore the data shown here can be trusted.

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
{{stateMsg(ECOLI.StateScore)}}
Trend
{{trendMsg(ECOLI)}}

Clarity

Clarity

Black disc
State
{{stateMsg(BDISC.StateScore)}}
Trend
{{trendMsg(BDISC)}}

Clarity

Turbidity
State
{{stateMsg(TURB.StateScore)}}
Trend
{{trendMsg(TURB)}}

Nitrogen

Nitrogen

Total Nitrogen
State
{{stateMsg(TN.StateScore)}}
Trend
{{trendMsg(TN)}}

Nitrogen

Total Oxidised Nitrogen
State
{{stateMsg(TON.StateScore)}}
Trend
{{trendMsg(TON)}}

Nitrogen

Ammoniacal Nitrogen
State
{{stateMsg(NH4.StateScore)}}
Trend
{{trendMsg(NH4)}}

Phosphorus

Phosphorus

Dissolved Reactive Phosphorus
State
{{stateMsg(DRP.StateScore)}}
Trend
{{trendMsg(DRP)}}

Phosphorus

Total Phosphorus
State
{{stateMsg(TP.StateScore)}}
Trend
{{trendMsg(TP)}}

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.