Notice

The twenty-first release of the HYDAT.mdb and the sixteenth release of Hydat.sqlite3 dated on October 16, 2019 are now available.

Water Level and Flow

Explore real-time water level and flow (discharge) data collected at over 1900 hydrometric stations across Canada.

Explore historical water level and flow (discharge) data collected at over 7700 hydrometric stations across Canada.

Access station and network metadata (such as station name, location, drainage area, data type, gauge type, stream order).

Download freely-available hydrometric data products and hydrological modelling tools.

Learn about the federal-provincial/territorial and international partnerships of the national hydrometric program.

Learn about the Water Survey of Canada, and access other websites related to water data or water resource management.