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IN BRIEF
ENVIRONMENT · DOE · RIVERS
What share of monitored river basins is classified polluted on key indicators?
Annual polluted-basin proportions for biochemical oxygen demand, ammoniacal nitrogen and suspended solids.
SHOW ME THE DATA2000 → 2024 · share of monitored basins classified polluted
VIEW DATA ASSame source · different visual lens
PULSEKITA RACE2000 — 2024
DOE
SourceDepartment of Environment (DOE)
2000
1Suspended solids44.2
2NH3-N18.3
3BOD515.0
200020002024
DOEDepartment of Environment (DOE)Values: share of monitored basins classified polluted
SourceDepartment of Environment (DOE) ↗Catalogue data through 2024HIGH CONFIDENCE
Method & notes
The indicator-by-indicator view is more informative than collapsing all river pollution into one score.
METHOD & LIMITATIONSHow the numbers were calculated
PulseKita reads DOE's official river-basin monitoring dataset and selects rows classified as polluted for each of the three published indicators: BOD5, NH3-N and suspended solids.
- The three indicators describe different forms of water-quality stress and should not be added together.
- The denominator is the number of monitored basins in each year, which can change over time.
- A basin can be classified differently across the three indicators.
- DOE monitors river quality through a large national network of manual and automated stations.
Evidence trail
EVIDENCE CHAINtransformation inherited from methodology
- 1Declared sourceRiver Basin Pollution Monitoring
- 2TransformationPulseKita reads DOE's official river-basin monitoring dataset and selects rows classified as polluted for each of the three published indicators: BOD5, NH3-N and suspended solids.
- 3Published visualAnimated race
Source
HIGH CONFIDENCEofficial primary
COVERAGE2000 → 2024
UNITshare of monitored basins classified polluted
SOURCEofficial publication
UPDATEDCatalogue data through 2024