MfE Data Service :: tag:data.mfe.govt.nz,2008-10:feed:data:mapstream=107771:category=301157:sort=rMinistry for the Environmenthttps://data.mfe.govt.nz//NZ Freshwater Nutrient and Biomass Measurements for Periphyton 2012 - 2020tag:data.mfe.govt.nz,2022-05:layers:1078682022-05-25T21:19:55.189595+00:002022-05-25T21:18:42.740799+00:00
<a class="kxThumbnail" href="https://data.mfe.govt.nz/table/107868-nz-freshwater-nutrient-and-biomass-measurements-for-periphyton-2012-2020/" title="Details for NZ Freshwater Nutrient and Biomass Measurements for Periphyton 2012 - 2020"><img src="https://assets.koordinates.com/kx-dandelion-live2-public/thumbs/layers/107868/362852/small.png" alt="NZ Freshwater Nutrient and Biomass Measurements for Periphyton 2012 - 2020 thumbnail"/></a><br />
<br /><strong>Updated with new data on 25 May 2022</strong><br />
<p>NZ regional council freshwater nutrient and biomass measurements 2012-2020.</p>
<p></p>
<p>Used to derive nitrogen and phosphorus concentrations and exceedance criteria for managing periphyton in fresh water.</p>
<p></p>
<p>Creative Commons 4.0 International by Ministry for the Environment and Statistics New Zealand</p>
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<p>Variables:</p>
<ul>
<li>Site (the number of the data point itself) </li>
<li>RC (Regional Council that collected the measurement) </li>
<li>RCSiteID (the identifier used by that specific council) </li>
<li>SiteName (the Site where the measurement was collected) </li>
<li>DateChla (date the chlorophyll-a measurement was collected) </li>
<li>Year (Year of collection) </li>
<li>Month (Month of collection) </li>
<li>Chla ( mg chlorophyll-a per square meter) </li>
<li>NOxppb (Nitrous oxide parts per billion) </li>
<li>NH4ppb (Ammonia parts per billion) </li>
<li>DRPppb (Dissolved Reactive Phosphorus parts per billion) </li>
<li>TNppb (Total Nitrogen parts per billion) </li>
<li>TPppb (Total Phosphorus parts per billion) </li>
<li>DINppb (Dissolved Inorganic Nitrogen parts per billion) </li>
<li>EC (Electrical Conductivity) </li>
<li>pH (acidity/basicness of the water at the sample location) </li>
<li>Temp (water temperature in degrees Celsius at time of measurement) </li>
<li>Turbidity (turbidity of the water at time of measurement) </li>
<li>Clarity_m (water clarity, in metres, at the time of measurement)</li>
</ul>
<p></p>
<p>N/A values in the data set refer to an absence of measurement for that specific variable.</p>
<p></p>
<p>Report:</p>
<p><a href="https://environment.govt.nz/publications/derivation-of-nutrient-criteria-for-periphyton-biomass-objectives/">environment.govt.nz/publications/derivation-of-nut...</a></p>
<p>Snelder T, Kilroy C, Booker D (2021) Derivation of Nutrient Criteria for Periphyton Biomass Objectives. Using regional council monitoring data. LWP and NIWA Ltd, Christchurch, New Zealand</p>
<p></p>
<p>For subject matter questions please contact freshwater@me.govt.nz.</p>
From: <a href="https://data.mfe.govt.nz/group/freshwater-directorate/" title="Profile for Freshwater">Freshwater</a><br />
Added: 25 May 2022<br />
Updated: 25 May 2022<br />
Lake Water Quality for Swimming Categories [Raw Model Output]tag:data.mfe.govt.nz,2018-06:layers:955612018-06-27T02:12:39.958975+00:002018-06-27T01:17:42.240739+00:00
<a class="kxThumbnail" href="https://data.mfe.govt.nz/layer/95561-lake-water-quality-for-swimming-categories-raw-model-output/" title="Details for Lake Water Quality for Swimming Categories [Raw Model Output]"><img src="//tiles-cdn.koordinates.com/services/tiles/v4/thumbnail/layer=95561.300557,style=auto/90x70.png" alt="Lake Water Quality for Swimming Categories [Raw Model Output] thumbnail"/></a><br />
<br /><strong>Updated with new data on 27 Jun 2018</strong><br />
<p>Water quality for swimming categories for lakes with perimeters over 1.5 km. This dataset was used to compose the current state for water quality for swimming. </p>
<p>Note this data is under review and will be updated in due course. This information is based on modelled and measured data using the approach outlined at<br>
<a href="http://www.mfe.govt.nz/fresh-water/freshwater-management-reforms/water-quality-swimming-categories-attribute-states-detail</u></font>">www.mfe.govt.nz/fresh-water/freshwater-management-...</a> </p>
<p>The modelling methods used are outlined in Snelder et al. (2016) Strategic assessment of New Zealand’s freshwaters for recreational use: a human health perspective. LWP Client Report 2016-011 <a href="http://www.mfe.govt.nz/publications/fresh-water/strategic-assessment-of-new-zealand%E2%80%99s-freshwaters-recreational-use-human">www.mfe.govt.nz/publications/fresh-water/strategic...</a> </p>
<p><strong>Versions</strong> </p>
<p>This dataset is the geometric version of this: <a href="https://data.mfe.govt.nz/table/53620-river-water-quality-for-swimming-categories/">data.mfe.govt.nz/table/53620-river-water-quality-f...</a> </p>
<p>This dataset has now been superseded due to consultation with local authorities, and this is the latest version: <a href="https://data.mfe.govt.nz/layer/95555-river-water-quality-for-swimming-categories-september-2017-latest/">data.mfe.govt.nz/layer/95555-river-water-quality-f...</a> </p>
<p><strong>Column headings:</strong> </p>
<p>LID: FENZ Lake ID </p>
<p>Name: Name of lake (where available </p>
<p>RC: Regional council name </p>
<p>CHLA: Chlorophyll a (mg/L) </p>
<p>SECCHI: Secchi disc depth (m) </p>
<p>TLI3: Trophic Level Index (unitless) </p>
<p>TN: Total nitrogen (mg/m3) </p>
<p>TP: Total phosphorus (mg/m3) </p>
<p>CyanBVl: Cyanobacterial biovolume (mm3/L) </p>
<p>Cy_cat: Water quality for swimming category see <a href="http://www.mfe.govt.nz/fresh-water/national-targets-swimming-water-quality/water-quality-swimming-categories-attribute"></a><a href="http://www.mfe.govt.nz/fresh-water/what-government-doing/national-targets-swimming-water-quality/water-quality-swimming">www.mfe.govt.nz/fresh-water/what-government-doing/...</a> </p>
<p><em>Note: blank cells are reaches where a prediction was not possible because of missing predictor variables.</em></p>
From: <a href="https://data.mfe.govt.nz/group/freshwater-directorate/" title="Profile for Freshwater">Freshwater</a><br />
Added: 27 Jun 2018<br />
Updated: 27 Jun 2018<br />