Lac Saint-Jean
No dataInsufficient data for gauge
Current Weather
Sep 2011°CLight Rainshower
Wind SE 6 km/h
Humidity 87%
A few showers
Environment Canada — Lac-Saint-Jean
vs. Last Year
No data available
7-Day Trend
No trend data
Seasonal Position
—
Seasonal Outlook
Typical next 7 days
This lake usually rises moderately over the next week.
Typical next 14 days
Over two weeks, levels typically rises noticeably.
Based on 37 years of seasonal patterns. This is a historical seasonal pattern, not a forecast.
Fish Consumption Advisories (5 species)
The following consumption advisories are in effect for fish caught in Lac Saint-Jean.
Doré jaune
| Contaminant | Size | General pop. | Sensitive pop. |
|---|---|---|---|
| Mercure | 30–40 cm | 4/month | — |
| Mercure | 40–50 cm | 2/month | — |
| Mercure | 50+ cm | 1/month | — |
Grand brochet
| Contaminant | Size | General pop. | Sensitive pop. |
|---|---|---|---|
| Mercure | 40–55 cm | 8/month | — |
| Mercure | 55–70 cm | 2/month | — |
| Mercure | 70+ cm | 2/month | — |
Grand corégone
| Contaminant | Size | General pop. | Sensitive pop. |
|---|---|---|---|
| Mercure | 35–40 cm | 8/month | — |
| Mercure | 40–45 cm | 8/month | — |
| Mercure | 45+ cm | 8/month | — |
Lotte
| Contaminant | Size | General pop. | Sensitive pop. |
|---|---|---|---|
| Mercure | 30–45 cm | 8/month | — |
| Mercure | 45–60 cm | 8/month | — |
| Mercure | 60+ cm | 4/month | — |
Ouananiche
| Contaminant | Size | General pop. | Sensitive pop. |
|---|---|---|---|
| Mercure | 30–40 cm | 8/month | — |
| Mercure | 40–50 cm | 8/month | — |
| Mercure | 50+ cm | 4/month | — |
Source: Guide de consommation du poisson (MELCCFP) (2025). Advisory data is updated annually.
Water Level — Last 30 Days
No recent readings
Technical details
- Current level
- —
- Reference value
- —
- Percentile for date
- —
- Years of record
- —
- Source station
- SAINT-JEAN (LAC) A ROBERVAL (PRES DU CENTRE AQUATIQUE) (02RG020)
- Est. average depth
- —
- Relationship type
- direct_lake
- Mapping confidence
- medium
- Today's normal range
- —
- Same-date historical range
- —
- 30-day change
- —
- Data confidence
- —
- Observed at
- —
- Last snapshot
- —
Data source: ECCC Water Office — Station 02RG020. Water level readings are provisional and subject to revision. This is not a navigation or flood-warning service.