River water quality trends, 2008–2017, 1998–2017, and 1990–2017

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Creative Commons Attribution 4.0 International

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2068
26
Updated
15 Apr 2020

This dataset was last updated on MfE Data Service on 15 Apr 2020.

16 April 2020: Subsequent to publication in April 2019 we discovered two small errors with this dataset. These included:

  • Errors in the coordinates of some sites and their associated metadata (such as landcover and elevation).
  • Errors in our calculation of dominant landcover.

In addition, flow data from TopNet has also been updated.

These changes have a minor impact on overall results. These changes have have been corrected, and are republished here, as part of the Our freshwater 2020 release.

This dataset measures how water quality in New Zealand’s rivers is changing over time. It contains nine parameters of water quality based on measurements made at monitored river sites in years 1990-2017:

  • Nitrate-nitrogen
  • Ammoniacal nitrogen
  • Total nitrogen
  • Total phosphorus
  • Dissolved reactive phosphorus
  • Water clarity
  • Turbidity
  • Escherichia coli
  • Macroinvertebrate community index

More information on this dataset and how it relates to our environmental reporting indicators and topics can be found in the attached data quality pdf.

Summary report available at www.mfe.govt.nz/publications/fresh-water/water-qua....

License

Creative Commons Attribution 4.0 International

You may use this work for commercial purposes.

You must attribute the creator in your own works.

Technical Details
Table ID 99883
Data type Table
Row count 9225
Columns field_1, s_id, nzsegment, nzreach, nztme, nztmn, long, lat, period, np_id, np_id_name, np_id_units, direction_conf_likely, n_obs, s, var_s, d, tau, z, p, probability, prop_censored, prop_unique, no_censorlevels, median, sen_var_s, annual_sen_slope, intercept, lci, uci, analysis_note, sen_probability, sen_probabilitymax, sen_probabilitymin, percent_annual_change, trend_category, trend_direction, seasonal, season, direction_conf, nzmge, nzmgn, climate, src_of_flw, landcover, model_name, dominant_landcover, trend_category2, percent_annual_change2
Services Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed
History
Added 16 Apr 2019
Last updated 15 Apr 2020
Revisions 8 - Browse all revisions
Current revision Imported on April 14, 2020 from CSV .