Monitored sites in the Taruheru River catchment
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The headwaters of the Taruheru at Waihirere Domain is within reserve land and this reserve has allowed the water quality within the reaches in the reserve to maintain high quality. The presence of fresh water Koura (Crayfish) in the stream at this location is unique in the Poverty Bay.
Downstream reaches suffer from sluggish flow due to the flat nature of the topography and the influence from very intensive horticulture. The monitoring site at Tuckers Road is described as having some of the poorest water quality in the Gisborne Region. Oxygen level are often low, the substrate is soft bottomed with fine silt deposits and biological life in the flat reaches is poor.
A tidal influence affects the area of the Taruheru near Gisborne city. High tide provides a flush of salt water that enables the amenity values of these reaches to be appreciated by recreational users of the river.
Gisborne District Council monitors water quality for State of Environment and for Recreational bathing. A community group is undertaking water quality monitoring within the Waihirere Domain (in 2014-15) as part of a national programme to compare the results from Council sampling and testing with results from community groups.
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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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