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

75.37m above IGLD 1985

1.17 m above chart datum · observed Sep 2, 8:57 p.m.
Fisheries and Oceans Canada (CHS)

Brockville, ON

74.89m above IGLD 1985

0.94 m above chart datum · observed Sep 2, 8:57 p.m.
Fisheries and Oceans Canada (CHS)

Alexandria Bay, NY

75.02m above IGLD 1985

observed Sep 2, 8:48 p.m.
NOAA CO-OPS

Ogdensburg, NY

74.84m above IGLD 1985

observed Sep 2, 8:42 p.m.
NOAA CO-OPS

Updated 16 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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