Water quantity

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

Services and information

Water level and flow data

Real-time data, historical, station and network data, tools, downloads, partners, resources.

Great Lakes water levels

Current, recent and historical levels, forecasts, precipitation, waves, wind, ice cover, outflows.

Water environmental sustainability indicators

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


Causes and costs of flooding, reducing flood damage, flooding events in Canada.

Water Survey of Canada

Hydrometric data, hydrology of Canada, hydrometric program, international activities.

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