Lesser Slave Lake
Higher than usualWater level is higher than usual for mid-September and falling.
Low (575.80m)Normal rangeHigh (578.04m)
Current Weather
2d ago18°CSunny
Wind ESE 9 km/h
Humidity 58%
Mainly sunny
Environment Canada — Slave Lake
vs. Last Year
No data available
7-Day Trend
↓Falling
Down 2.3 cm over the past week
-2.3 cm over 7 days
Seasonal Position
78th percentile
Based on 46 years of records
Seasonal Outlook
Typical next 7 days
This lake usually drops slightly over the next week.
Typical next 14 days
Over two weeks, levels typically drops moderately.
Tracking
This year is tracking near the seasonal norm.
Based on 46 years of seasonal patterns. This is a historical seasonal pattern, not a forecast.
Lake Profile
Est. average depth11.4 m
Estimated from HydroLAKES v1.0 (Messager et al., 2016). Modeled geo-statistical estimate, not a direct survey measurement.
Water Level — Last 30 Days
Technical details
- Current level
- 576.84 m
- Reference value
- 576.85 m (rolling_6h_mean)
- Percentile for date
- 78th percentile
- Years of record
- 46
- Source station
- LESSER SLAVE LAKE AT SLAVE LAKE (07BJ006)
- Est. average depth
- 11.4 m
- Relationship type
- direct_lake
- Mapping confidence
- medium
- Today's normal range
- 576.22–576.77 m
- Same-date historical range
- 575.80–578.04 m
- 30-day change
- -9.0 cm
- Data confidence
- medium
- Observed at
- Sep 20, 2026
- Last snapshot
- Sep 20, 2026
Data source: ECCC Water Office — Station 07BJ006. Water level readings are provisional and subject to revision. This is not a navigation or flood-warning service.