Switch tabs below to look at different variables. Where state and/or trend assessments are available, variable tabs are suffixed with S and/or T respectively. Click to open a popup window with information on data in the selected tab and tips on how to use maps and tables.
States:
Trends:
Map: Drag and scroll on the map to move and zoom in on areas of interest, hover over map features to see more information, and use the options boxes (checkboxes/toggles) to show and hide layers.
Table: Click on rows to highlight those sites on the map and click on table headers to sort the data by that column – holding the shift key allows sorting over multiple columns. The coloured lines underneath trend rates match the trends map legend, hold the cursor over trend cells for full information.
Quantitative and standard macroinvertebrate community index (QMCI & MCI) results for the period 2018/19 to 2022/23 benchmarked against National Objectives Framework (NOF) guidelines.
Map: Drag and scroll on the map to move and zoom in on areas of interest, hover over map features to see more information, and use the options boxes (checkboxes/toggles) to show and hide layers.
Table: Click on rows to highlight those sites on the map and click on table headers to sort the data by that column – holding the shift key allows sorting over multiple columns.
Average score per metric (ASPM) results for the period 2018/19 to 2022/23 benchmarked against National Objectives Framework (NOF) guidelines.
Map: Drag and scroll on the map to move and zoom in on areas of interest, hover over map features to see more information, and use the options boxes (checkboxes/toggles) to show and hide layers.
Table: Click on rows to highlight those sites on the map and click on table headers to sort the data by that column – holding the shift key allows sorting over multiple columns.
Percentage and count of taxa species that are EPT; Ephemeroptera (mayfly), Plecoptera (stonefly) and all Trichoptera (caddisfly) except Hydroptilidae results for the period 2020/21 to 2022/23.
Map: Drag and scroll on the map to move and zoom in on areas of interest, hover over map features to see more information, and use the options boxes (checkboxes/toggles) to show and hide layers.
Table: Click on rows to highlight those sites on the map and click on table headers to sort the data by that column – holding the shift key allows sorting over multiple columns.
Periphyton biomass (Chlorophyll a mg/m2) results for the period 2020/21 to 2022/23 benchmarked against National Objectives Framework (NOF) guidelines.
Map: Drag and scroll on the map to move and zoom in on areas of interest, hover over map features to see more information, and use the options boxes (checkboxes/toggles) to show and hide layers.
Table: Click on rows to highlight those sites on the map and click on table headers to sort the data by that column – holding the shift key allows sorting over multiple columns. n refers to the number of samples and units are mg/m2 unless otherwise noted. Where three years (ie, 36 data points) of data has not been collected, the periphyton attribute state has been extrapolated to represent 36 data points.
Periphyton weighted composite cover (WCC) results for the period 2020/21 to 2022/23 benchmarked against a GWRC periphyton nuisance guideline of 30%.
Map: Drag and scroll on the map to move and zoom in on areas of interest, hover over map features to see more information, and use the options boxes (checkboxes/toggles) to show and hide layers.
Table: Click on rows to highlight those sites on the map and click on table headers to sort the data by that column – holding the shift key allows sorting over multiple columns.
Cyanobacteria mats (% coverage) results for the period 2020/21 to 2022/23.
Map: Drag and scroll on the map to move and zoom in on areas of interest, hover over map features to see more information, and use the options boxes (checkboxes/toggles) to show and hide layers.
Table: Click on rows to highlight those sites on the map and click on table headers to sort the data by that column – holding the shift key allows sorting over multiple columns.
Habitat quality results for 2022/23.
Map: Drag and scroll on the map to move and zoom in on areas of interest, hover over map features to see more information, and use the options boxes (checkboxes/toggles) to show and hide layers.
Table: Click on rows to highlight those sites on the map and click on table headers to sort the data by that column – holding the shift key allows sorting over multiple columns.