Description

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The nutrients in the St. Lawrence River indicator reports on the status of total phosphorous and total nitrogen concentrations along the St. Lawrence River. It ranks the status based on how often total phosphorous and total nitrogen concentrations exceed their respective water quality guidelines. Degraded water quality damages the health of all freshwater ecosystems, such as rivers, lakes, reservoirs and wetlands. When phosphorous and nitrogen concentrations in water become too high, aquatic plant growth can become excessive and harmful. Ongoing tracking of phosphorus and nitrogen concentrations allow governments and citizens to be aware of an important aspect of the river’s environmental condition. Information is provided to Canadians in a number of formats including: static and interactive maps, charts and graphs, HTML and CSV data tables and downloadable reports. See the supplementary documentation for the data sources and details on how the data were collected and how the indicator was calculated. Canadian Environmental Sustainability Indicators: https://www.canada.ca/environmental-indicators

Resources

Name	Format	Description	Link
Status of total phosphorus and total nitrogen concentrations for the 2021 to 2023 period in the St. Lawrence River – English (CSV; 2.75 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/nutrients-st-lawrence/2024/1-phosophorus-nitrogen-status.csv
Status of total phosphorus and total nitrogen concentrations for the 2021 to 2023 period in the St. Lawrence River – French (CSV; 3.73 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/nutrients-st-lawrence/2024/1-phosphore-azote-etat.csv
Annual percent of phosphorus samples above guideline for 5 water quality monitoring stations along the St. Lawrence River – French (CSV; 4.64 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/nutrients-st-lawrence/2024/2-phosphore-annuelles.csv
Annual percent of phosphorus samples above guideline for 5 water quality monitoring stations along the St. Lawrence River – English (CSV; 4.56 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/nutrients-st-lawrence/2024/2-phosphorus-annual.csv
Annual percent of nitrogen samples above guideline for 5 water quality monitoring stations along the St. Lawrence River – French (CSV; 4.39 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/nutrients-st-lawrence/2024/3-azote-annuelles.csv
Annual percent of nitrogen samples above guideline for 5 water quality monitoring stations along the St. Lawrence River– English (CSV; 4.32 kB)	CSV		https://www.canada.ca/content/dam/eccc/documents/csv/cesindicators/nutrients-st-lawrence/2024/3-nitrogen-annual.csv
Nutrients in the St. Lawrence River – English	HTML		https://www.canada.ca/en/environment-climate-change/services/environmental-indicators/nutrients-st-lawrence-river.html
Data sources and methods – English	HTML		https://www.canada.ca/en/environment-climate-change/services/environmental-indicators/nutrients-st-lawrence-river.html#DSM
Nutrients in the St. Lawrence River – French	HTML		https://www.canada.ca/fr/environnement-changement-climatique/services/indicateurs-environnementaux/elements-nutritifs-fleuve-saint-laurent.html
Data sources and methods – French	HTML		https://www.canada.ca/fr/environnement-changement-climatique/services/indicateurs-environnementaux/elements-nutritifs-fleuve-saint-laurent.html#DSM

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