Last Mountain Lake at Rowan'S Ravine water level

Name: Last Mountain Lake at Rowan'S Ravine water level (Environment and Climate Change Canada – Water Survey of Canada)
Creator: Environment and Climate Change Canada – Water Survey of Canada
License: https://open.canada.ca/en/open-government-licence-canada

Lake, Last Mountain Lake, Saskatchewan, Canada

Directions

Very high for mid-October

Surface elevation

490.17m Steady over the last 24 hours

Measured Oct 18, 2026, 03:20 PM CST (51 min ago)

History

What this means

There is plenty of water in Last Mountain Lake at Rowan'S Ravine: 490.17 m, well above normal for mid-October.

That puts it 0.23 m above the median of 489.93 m for mid-October, based on 11 years of readings. A year ago it stood at 489.99 m (+0.18 m).

The level has held steady over the past 24 hours. Over the past 30 days it has moved between 490.14 m and 490.33 m.

Lakes and reservoirs often sit lower in fall after a summer of evaporation and use, and recover with winter rain and spring snowmelt.

Compared with 11 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 489.93 m0.23 m above the median for this date
Normal for this date: 489.65 m – 490.00 m8 years in 10 fall in this range (11 years of records)
Same day last year: 489.99 m+0.18 m
Lowest and highest in 30 days: 490.14 m – 490.33 m
Lowest and highest in 12 months: 489.92 m – 490.32 m

Swimming and boating at Last Mountain Lake at Rowan'S Ravine

High water can flood ramps, parking areas and shoreline campsites, and it carries floating debris. Expect some no-wake zones to be extended.

If you swim, pick a spot with an easy way out, and remember that drop-offs move as the level changes.

Weather at the gauge

No rain in the last 3 days.

18 Sun 13° 3° – Wind 31 km/h

19 Mon 15° 1° – Wind 30 km/h

20 Tue 15° 4° – Wind 19 km/h

21 Wed 17° 4° – Wind 25 km/h

22 Thu 22° 9° – Wind 21 km/h

23 Fri 16° 7° 6.6 mm, 67% Wind 30 km/h

24 Sat 7° -1° 5.7 mm, 67% Wind 37 km/h

Forecast: Open-Meteo

Sunrise 07:30 AM Sunset 06:03 PM Daylight 10 hr, 34 min First quarter 53%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Qu'Appelle River below Craven DamRiver gauge, Qu'Appelle River	1.56 m	Normal	+0.05 m	42 km
Qu'Appelle River near LumsdenRiver gauge, Qu'Appelle River	491.10 m	Normal	−0.01 m	44 km
Wascana Creek near LumsdenRiver gauge, Wascana Creek	1.71 m	Normal	−0.02 m	44 km
Saline Creek near NokomisRiver gauge, Saline Creek	1.03 m	Normal	±0	47 km
Cottonwood Creek near LumsdenRiver gauge, Cottonwood Creek	1.37 m	Very high	+0.01 m	49 km
Boggy Creek near LumsdenRiver gauge, Boggy Creek	1.74 m	High	±0	51 km
Qu'Appelle River above Buffalo Pound LakeRiver gauge, Qu'Appelle River	5.54 m	High	±0	52 km
Qu'Appelle River below Loon CreekRiver gauge, Qu'Appelle River	0.95 m	Normal	−0.05 m	67 km

Questions and answers

How does Last Mountain Lake at Rowan'S Ravine compare with last year?

It is 0.18 m higher than on the same day last year, when the reading was 489.99 m.

What is a normal level for Last Mountain Lake at Rowan'S Ravine in mid-October?

The median for mid-October is 489.93 m. In 8 years out of 10 the reading falls between 489.65 m and 490.00 m, based on 11 years of records.

Is Last Mountain Lake at Rowan'S Ravine really 490.17 m deep?

No. 490.17 m is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Last Mountain Lake at Rowan'S Ravine today?

On Oct 18, 2026, 03:20 PM CST, the surface elevation was 490.17 m. Steady over the last 24 hours.

Is Last Mountain Lake at Rowan'S Ravine rising or falling?

Steady over the last 24 hours. Down 0.06 m over the last 7 days.

Is the level of Last Mountain Lake at Rowan'S Ravine normal?

Very high for mid-October. Compared with 11 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:05JH004 (Agency page)
Coordinates: 50.99564, -105.18386 (WGS84)
Vertical datum: GEODETIC SURVEY OF CANADA DATUM
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
Surface elevation	490.17 m	2026-10-18 21:20	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Last Mountain Lake at Rowan'S Ravine (eccc:05JH004). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/canada/saskatchewan/last-mountain-lake-at-rowans-ravine

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