Last Mountain Lake
Higher than usualWater level is higher than usual for mid-September and rising.
Low (489.45m)Normal rangeHigh (491.03m)
Current Weather
2d ago17°C
Wind S 16 km/h
Humidity 56%
A mix of sun and cloud
Environment Canada — Fort Qu'Appelle - Indian Head - Lumsden - Pilot Butte
vs. Last Year
No data available
7-Day Trend
↑Rising
Up 2.4 cm over the past week
+2.4 cm over 7 days
Seasonal Position
81st percentile
Based on 59 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 moving faster than usual.
Based on 54 years of seasonal patterns. This is a historical seasonal pattern, not a forecast.
Water Level — Last 30 Days
Technical details
- Current level
- 490.30 m
- Reference value
- 490.31 m (rolling_6h_mean)
- Percentile for date
- 81st percentile
- Years of record
- 59
- Source station
- LAST MOUNTAIN LAKE AT ROWAN'S RAVINE (05JH004)
- Est. average depth
- —
- Relationship type
- direct_lake
- Mapping confidence
- medium
- Today's normal range
- 489.87–490.16 m
- Same-date historical range
- 489.45–491.03 m
- 30-day change
- +3.8 cm
- Data confidence
- medium
- Observed at
- Sep 20, 2026
- Last snapshot
- Sep 20, 2026
Data source: ECCC Water Office — Station 05JH004. Water level readings are provisional and subject to revision. This is not a navigation or flood-warning service.