Fleuve Saint-Laurent à Lasalle water level
River gauge, Fleuve Saint-Laurent, Québec, Canada
Right now
Normal for mid-October
Water level
- Flow
- 8,130 m³/s
History
20252026
What this means
The gauge at Fleuve Saint-Laurent à Lasalle reads 1.05 m, a normal level for mid-October.
The median for mid-October is 1.02 m, based on 21 years of readings, so the water level is 0.03 m above typical. On the same day last year the reading was 0.85 m, a difference of +0.20 m.
The level is falling, down 0.08 m over the past 24 hours. Over the past 30 days it has moved between 0.91 m and 1.31 m.
Fall is often low-water season on rivers, until steadier rain returns.
Compared with 21 years of daily readings for this time of year. How to read levels
Key numbers
- Median for this date
- 1.02 m0.03 m above the median for this date
- Normal for this date
- 0.71 m – 1.36 m8 years in 10 fall in this range (21 years of records)
- Same day last year
- 0.85 m+0.20 m
- Lowest and highest in 30 days
- 0.91 m – 1.31 m
- Lowest and highest in 12 months
- 0.57 m – 1.30 m
Conditions at Fleuve Saint-Laurent à Lasalle
Paddlers should check the trend as well as the level; summer storms can raise rivers quickly.
Flood advisories come from the provincial river forecast centre.
About the Fleuve Saint-Laurent
The St. Lawrence River is a large international river in the middle latitudes of North America connecting the Great Lakes with the North Atlantic Ocean. Its waters flow in a northeasterly direction from Lake Ontario to the Gulf of St. Lawrence, traversing Ontario and Quebec in Canada and New York in the United States. A portion of the river demarcates the Canada–United States border.
Text and image from Wikipedia and Wikimedia Commons, licensed under CC BY-SA.
Weather at the gauge
Rain in the last 3 days: 23 mm. Rain that falls upstream can take hours or days to show up at a river gauge.
Forecast: Open-Meteo
Map
Other gauges on the Fleuve Saint-Laurent
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Fleuve Saint-Laurent à Pointe-Des-CascadesRiver gauge, Fleuve Saint-Laurent | 21.17 m | Normal | −0.07 m | 28 km |
| Fleuve Saint-Laurent à LanoraieRiver gauge, Fleuve Saint-Laurent | 4.32 m | Normal | −0.06 m | 68 km |
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Lac Saint-Louis à Pointe-ClaireLake, Lac Saint-Louis | 21.07 m | Normal | −0.08 m | 15 km |
| Rivière des Outaouais à la Marina de Sainte-Anne-De-BellevueRiver gauge, Rivière des Outaouais | 21.06 m | Normal | −0.07 m | 25 km |
| Rivière des Outaouais à Sainte-Anne-De-BellevueRiver gauge, Rivière des Outaouais | 21.53 m | Low | −0.07 m | 26 km |
| Rivière Richelieu aux Rapides FryersRiver gauge, Rivière Richelieu | 0.71 m | Low | +0.05 m | 29 km |
| Rivière des Mille îles à Bois-Des-FilionRiver gauge, Rivière des Mille îles | 0.95 m | Normal | +0.03 m | 29 km |
| Rivière des Outaouais à Terrasse-VaudreuilRiver gauge, Rivière des Outaouais | 21.51 m | Low | −0.08 m | 29 km |
| Rivière Richelieu à la Marina de Saint-JeanRiver gauge, Rivière Richelieu | 0.22 m | Low | +0.07 m | 32 km |
| Great Chazy River at Perry MillsRiver gauge, Great Chazy River | 3.09 ft | Below flood stage | −0.86 ft | 29 mi |
Questions and answers
Is the Fleuve Saint-Laurent à Lasalle higher than last year?
Yes, it is 0.20 m higher than on the same day last year, when the reading was 0.85 m.
What is a normal level for the Fleuve Saint-Laurent à Lasalle in mid-October?
The median for mid-October is 1.02 m. In 8 years out of 10 the reading falls between 0.71 m and 1.36 m, based on 21 years of records.
Is the river level the same as the depth of the water?
No. The reading is measured from a fixed zero mark at the gauge, so 1.05 m on the gauge does not mean the water is that deep.
What is the water level of Fleuve Saint-Laurent à Lasalle today?
On Oct 18, 2026, 05:45 AM EDT, the water level was 1.05 m. Down 0.08 m over the last 24 hours.
Is Fleuve Saint-Laurent à Lasalle rising or falling?
Down 0.08 m over the last 24 hours. Up 0.10 m over the last 7 days.
Is the level of Fleuve Saint-Laurent à Lasalle normal?
Normal for mid-October. Compared with 21 years of daily readings for this time of year.
How often is this data updated?
Environment and Climate Change Canada – Water Survey of Canada publishes a new reading every hour. This page refreshes within minutes of each update.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- Environment and Climate Change Canada – Water Survey of Canada
- Station code
eccc:02OA016(Agency page)- Coordinates
45.41501, -73.62316(WGS84)- Vertical datum
- station datum (arbitraire)
- Update interval
- every hour
- Licence
- Open Government Licence – Canada. Contains information licensed under the Open Government Licence – Canada
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 1.05 m | 2026-10-18 09:45 | Provisional |
| Flow | 8,130 m³/s | 2026-10-18 09:45 | Provisional |
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How to cite
Environment and Climate Change Canada – Water Survey of Canada: Fleuve Saint-Laurent à Lasalle (eccc:02OA016). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/canada/quebec/fleuve-saint-laurent-a-lasalle
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer