Current St. Lawrence water levels from official gauges, both sides of the river.
74.67m above IGLD 1985
74.46m above IGLD 1985
74.57m above IGLD 1985
74.42m above IGLD 1985
Updated 15 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. For navigation and flood decisions use official sources directly.