Lesser Slave River at Slave Lake water level

Name: Lesser Slave River 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

River gauge, Lesser Slave River, Alberta, Canada

Directions

High for mid-October

Surface elevation

576.58m Up 0.13 m over the last 24 hours

Measured Oct 17, 2026, 02:45 PM MDT (24 min ago)

Flow: 62.7 m³/s

History

7 days 30 days 1 year Years compared

20252026

Surface elevation Normal range (10–90 %)

What this means

The Lesser Slave River at Slave Lake is above normal at 576.58 m.

That puts it 0.30 m above the median of 576.29 m for mid-October, based on 15 years of readings. A year ago it stood at 575.92 m (+0.67 m).

It has risen 0.13 m over the past 24 hours. If the rise continues, low-lying paths and riverside parking can go under water. In the last month it has stayed between 576.33 m and 576.93 m.

That stands out in fall, when many rivers are usually near their lowest.

Compared with 15 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 576.29 m0.30 m above the median for this date
Normal for this date: 575.92 m – 576.76 m8 years in 10 fall in this range (15 years of records)
Same day last year: 575.92 m+0.67 m
Lowest and highest in 30 days: 576.33 m – 576.93 m
Lowest and highest in 12 months: 575.58 m – 576.60 m

On the river

Outside the spring freshet, most rivers settle into a gentler pattern, broken by storms.

Flood advisories come from the provincial river forecast centre.

Weather at the gauge

Rain in the last 3 days: 4.8 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

17 Sat 11° 4° 1.3 mm, 63% Wind 35 km/h

18 Sun 10° 5° – Wind 30 km/h

19 Mon 10° 0° – Wind 11 km/h

20 Tue 9° 1° – Wind 14 km/h

21 Wed 11° 0° – Wind 12 km/h

22 Thu 8° 2° – Wind 13 km/h

23 Fri 5° 2° – Wind 19 km/h

Forecast: Open-Meteo

Sunrise 08:14 AM Sunset 06:36 PM Daylight 10 hr, 23 min First quarter 43%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Lesser Slave Lake at Slave LakeLake, Lesser Slave Lake	576.93 m	High	+0.13 m	1.0 km
Sawridge Creek near Slave LakeRiver gauge, Sawridge Creek	1.79 m	Normal	+0.04 m	4.0 km
Lily Creek near Slave LakeRiver gauge, Lily Creek	92.60 m	Very high	±0	13 km
Driftwood River near the MouthRiver gauge, Driftwood River	1.13 m	Very high	−0.01 m	34 km
Saulteaux River near SpurfieldRiver gauge, Saulteaux River	1.73 m	High	±0	37 km
Swan River near KinusoRiver gauge, Swan River	583.83 m	Very high	−0.10 m	42 km
Fawcett Lake near SmithLake, Fawcett Lake	611.44 m	Very high	±0	44 km
Driftpile River near DriftpileRiver gauge, Driftpile River	1.97 m	Very high	−0.13 m	66 km

Questions and answers

How does the Lesser Slave River at Slave Lake compare with last year?

It is 0.67 m higher than on the same day last year, when the reading was 575.92 m.

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

The median for mid-October is 576.29 m. In 8 years out of 10 the reading falls between 575.92 m and 576.76 m, based on 15 years of records.

Is Lesser Slave River at Slave Lake really 576.58 m deep?

No. 576.58 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 River at Slave Lake today?

On Oct 17, 2026, 02:45 PM MDT, the surface elevation was 576.58 m. Up 0.13 m over the last 24 hours.

Is Lesser Slave River at Slave Lake rising or falling?

Up 0.13 m over the last 24 hours. Up 0.12 m over the last 7 days.

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

High for mid-October. Compared with 15 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:07BK001 (Agency page)
Coordinates: 55.30494, -114.75611 (WGS84)
Vertical datum: APPROXIMATE 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	576.58 m	2026-10-17 20:45	Provisional
Flow	62.7 m³/s	2026-10-17 20:45	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Lesser Slave River at Slave Lake (eccc:07BK001). Accessed October 17, 2026 via Nivelmap, https://nivelmap.com/en/canada/alberta/lesser-slave-river-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