Monitored sites in the Waituna Creek catchment
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Long known for its diverse ecological characteristics and cultural values, the catchment is part of the internationally recognised Awarua Wetlands, which became a Ramsar site of international importance in 1976. The lagoon and its margins were recognised nationally as an important area by gaining Scientific Reserve status in 1983. The cultural significance to the local Ngāi Tahu people was recognised under a Statutory Acknowledgement with the Ngāi Tahu Claims Settlement Act 1998.
Environment Southland is part of a multi-agency response to address the decline in water quality and to prevent the lagoon from reaching a degraded state. Interested parties involved in this process include the local farmers and residents, several community groups, the Department of Conservation, iwi, the Southland District Council, DairyNZ, Fonterra, Federated Farmers, Beef and Lamb NZ, Fish and Game Southland, and Forest and Bird.
The upper part of the catchment consists primarily of brown soils, which have relatively high yields of nitrate per hectare. The lower catchment is dominated by high organic content peat type soils, which have a relatively high yield of phosphorus per hectare.
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This dashboard shows information on the data collected by the regional councils for water quality indicators, analysed as
The state for the catchment is represented by theconcentration for the across all sites within the catchment and then compares that value to the for all monitored sites in New Zealand.
Click on the parameters state icons to compare this catchment with others in the region.
State shows how theof samples from this site compares to other sites
Trend shows how the quality of water is changing over time. Depending on the sampling history duration, five and ten year timescales are available:
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.
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.
All samples were collected using approved field protocols and have been analysed in accredited laboratories.
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.
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