Water and the environment

Water science, water quality, quantity, Great Lakes, Saint-Lawrence, cleaning lakes and rivers, legislation.

Services and information

Cleaning up our lakes and rivers

Lake Winnipeg, Great Lakes, St. Lawrence Action Plan, funding, partnerships.

Water governance and legislation

Federal legislation, annual reports, Red River, Poplar River, Souris River, Mackenzie River.

Water science

Proficiency testing, Great Lakes sediments, inland water remote sensing, aquatic specimen bank.

Freshwater quality monitoring

Environmental monitoring, assessment and reporting on aquatic ecosystems status and trends.

Marine water quality monitoring

Shellfish and water quality, growing areas, shellfish safety, classification of shellfish.

Water quantity

Water levels, floods, hydrometric data, water availability, Water Survey of Canada.

Water sustainability indicators

Quantity, availability, quality, phosphorus, nutrients, land use impact, harmful substances.

Great Lakes protection

Areas of concern, water quality agreements, lakewide management plans, data, maps, funding.

St. Lawrence River

Wetlands, phosphorus levels, sediment quality, nutrients, interactive map, fact sheets.


Regulations, agreements, pollution, management and contacts.

What we are doing

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