Wollaston Lake
Higher than usualWater level is higher than usual for mid-September and holding steady.
Low (28.01m)Normal rangeHigh (392.17m)
Current Weather
2d ago17°C
Wind W 11 km/h
Humidity 62%
Chance of showers
Environment Canada — Wollaston Lake - Collins Bay
vs. Last Year
No data available
7-Day Trend
→Stable
Changed less than 2.0 cm over the past week
+0.8 cm over 7 days
Seasonal Position
87th percentile
Based on 53 years of records
Seasonal Outlook
Typical next 7 days
This lake usually holds steady over the next week.
Typical next 14 days
Over two weeks, levels typically drops slightly.
Tracking
This year is tracking near the seasonal norm.
Based on 53 years of seasonal patterns. This is a historical seasonal pattern, not a forecast.
Fish Consumption Advisories (3 species)
The following consumption advisories are in effect for fish caught in Wollaston Lake.
⚠Lake Trout
| Contaminant | Size | General pop. | Sensitive pop. |
|---|---|---|---|
| Mercury | 50-55 cm | 4/month | Do not eat |
| Mercury | 55-60 cm | 4/month | Do not eat |
| Mercury | 60-65 cm | 4/month | Do not eat |
| Mercury | 65-70 cm | 4/month | Do not eat |
⚠Largemouth Bass
| Contaminant | Size | General pop. | Sensitive pop. |
|---|---|---|---|
| Mercury | 40-45 cm | 4/month | Do not eat |
| Mercury | 25-30 cm | 4/month | Do not eat |
| Mercury | 30-35 cm | 4/month | Do not eat |
| Mercury | 35-40 cm | 4/month | Do not eat |
⚠Smallmouth Bass
| Contaminant | Size | General pop. | Sensitive pop. |
|---|---|---|---|
| Mercury | 20-25 cm | 8/month | 4/month |
| Mercury | 25-30 cm | 4/month | Do not eat |
| Mercury | 30-35 cm | 4/month | Do not eat |
| Mercury | 35-40 cm | 4/month | Do not eat |
Source: Provincial fish consumption advisory program (2025). Advisory data is updated annually.
Water Level — Last 30 Days
Technical details
- Current level
- 391.55 m
- Reference value
- 391.56 m (rolling_6h_mean)
- Percentile for date
- 87th percentile
- Years of record
- 53
- Source station
- WOLLASTON LAKE AT ROSS CHANNEL (06DA001)
- Est. average depth
- —
- Relationship type
- direct_lake
- Mapping confidence
- medium
- Today's normal range
- 28.21–391.17 m
- Same-date historical range
- 28.01–392.17 m
- 30-day change
- -2.1 cm
- Data confidence
- medium
- Observed at
- Sep 20, 2026
- Last snapshot
- Sep 20, 2026
Data source: ECCC Water Office — Station 06DA001. Water level readings are provisional and subject to revision. This is not a navigation or flood-warning service.