Live · both sides of the river

River levels

Current St. Lawrence water levels from official gauges. Useful for docks, haul-outs, and knowing whether the shoal off your point is a problem this week.

Kingston, ON

74.74m above IGLD 1985

0.54 m above chart datum · observed Oct 20, 5:39 a.m.
Fisheries and Oceans Canada (CHS)

Brockville, ON

74.49m above IGLD 1985

0.54 m above chart datum · observed Oct 20, 5:39 a.m.
Fisheries and Oceans Canada (CHS)

Alexandria Bay, NY

74.63m above IGLD 1985

observed Oct 20, 5:30 a.m.
NOAA CO-OPS

Ogdensburg, NY

74.44m above IGLD 1985

observed Oct 20, 5:30 a.m.
NOAA CO-OPS

Updated 17 min ago. Readings refresh about every 30 minutes.

Data: Canadian Hydrographic Service (Fisheries and Oceans Canada) and NOAA CO-OPS. All readings are metres above the IGLD 1985 datum, the reference the whole Lake Ontario and St. Lawrence system is managed against. For navigation and flood decisions use the official sources directly.

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