Lesser Slave Lake at Slave Lake water level

Name: Lesser Slave Lake at Slave Lake 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, Lesser Slave Lake, Alberta, Canada

Directions

High for mid-October

Surface elevation

576.92m Up 0.13 m over the last 24 hours

Measured Oct 18, 2026, 07:45 AM MDT (39 min ago)

History

What this means

At 576.92 m, Lesser Slave Lake at Slave Lake is holding more water than usual for mid-October.

The median for mid-October is 576.45 m, based on 11 years of readings, so the water level is 0.47 m above typical. On the same day last year the reading was 575.94 m, a difference of +0.98 m.

It is on the way up, by 0.13 m over the past 24 hours. The 30-day range is 576.69 m – 577.31 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: 576.45 m0.47 m above the median for this date
Normal for this date: 576.03 m – 577.13 m8 years in 10 fall in this range (11 years of records)
Same day last year: 575.94 m+0.98 m
Lowest and highest in 30 days: 576.69 m – 577.31 m
Lowest and highest in 12 months: 575.68 m – 576.97 m

Boating and fishing at Lesser Slave Lake at Slave Lake

Slightly high water rarely causes problems on the water itself, though some low-lying shoreline spots may be wet.

Conditions at the shore change with the level, so check with the agency that runs the lake before a trip.

Weather at the gauge

Rain in the last 3 days: 2.8 mm.

18 Sun 10° 5° – Wind 28 km/h

19 Mon 9° 0° – Wind 11 km/h

20 Tue 11° 1° – Wind 13 km/h

21 Wed 10° 0° – Wind 11 km/h

22 Thu 9° 0° – Wind 8 km/h

23 Fri 5° 0° 14 mm, 67% Wind 23 km/h

24 Sat 0° -2° 7.1 mm, 55% Wind 23 km/h

Forecast: Open-Meteo

Sunrise 08:16 AM Sunset 06:34 PM Daylight 10 hr, 18 min First quarter 50%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Lesser Slave River at Slave LakeRiver gauge, Lesser Slave River	576.57 m	High	+0.11 m	1.0 km
Sawridge Creek near Slave LakeRiver gauge, Sawridge Creek	1.93 m	High	+0.14 m	3.9 km
Lily Creek near Slave LakeRiver gauge, Lily Creek	92.61 m	Very high	+0.02 m	13 km
Driftwood River near the MouthRiver gauge, Driftwood River	1.10 m	Very high	−0.03 m	35 km
Saulteaux River near SpurfieldRiver gauge, Saulteaux River	1.73 m	High	±0	38 km
Swan River near KinusoRiver gauge, Swan River	583.79 m	Very high	−0.05 m	41 km
Fawcett Lake near SmithLake, Fawcett Lake	611.43 m	Very high	−0.03 m	45 km
Driftpile River near DriftpileRiver gauge, Driftpile River	1.96 m	Very high	−0.04 m	65 km

Questions and answers

Is Lesser Slave Lake at Slave Lake higher than last year?

Yes, it is 0.98 m higher than on the same day last year, when the reading was 575.94 m.

What is a normal level for Lesser Slave Lake at Slave Lake in mid-October?

The median for mid-October is 576.45 m. In 8 years out of 10 the reading falls between 576.03 m and 577.13 m, based on 11 years of records.

Is Lesser Slave Lake at Slave Lake really 576.92 m deep?

No. 576.92 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 Lesser Slave Lake at Slave Lake today?

On Oct 18, 2026, 07:45 AM MDT, the surface elevation was 576.92 m. Up 0.13 m over the last 24 hours.

Is Lesser Slave Lake at Slave Lake rising or falling?

Up 0.13 m over the last 24 hours. Up 0.11 m over the last 7 days.

Is the level of Lesser Slave Lake at Slave Lake normal?

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:07BJ006 (Agency page)
Coordinates: 55.30566, -114.77175 (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	576.92 m	2026-10-18 13:45	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Lesser Slave Lake at Slave Lake (eccc:07BJ006). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/canada/alberta/lesser-slave-lake-at-slave-lake

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