Great Slave Lake at Yellowknife Bay water level today
Lake in Northwest Territories
At a glance · Oct 23
Great Slave Lake at Yellowknife Bay is 0.03 m lower than normal for Oct 23, lower than on this date in 2 of the last 10 years, but still within its normal range.
- This week↘ Falling 0.07 m
- Lowest on record↓ 155.83 m (2023)
Compared with this gauge's own records for the same date. A statistical guide, not advice.
Today compared with past years on Oct 23
Where today's reading sits among this gauge's own records for the same date (±3 days). A statistical guide, not advice.
What this means
It is lower than on Oct 23 in 2 of the last 10 years.
The lake has fallen 0.068 m in 7 days and fallen 0.123 m in 30 days.
Since 1934, the lowest daily level was 155.832 m (Nov 2023) and the highest 157.275 m (Sep 2020).
Great Slave Lake at Yellowknife Bay level chart
Loading chart…
2026 compared with 2025
Each year drawn on the same January–December axis, over this gauge's normal range for each date. Hover or tap a point for its value.
Same date in past years
| Date | Level | vs today |
|---|---|---|
| Oct 23, 2025 | 156.188 m | ▼ 0.314 m |
| Oct 23, 2024 | 155.990 m | ▼ 0.512 m |
| Oct 23, 2023 | 155.933 m | ▼ 0.569 m |
| Oct 23, 2022 | 156.479 m | ▼ 0.023 m |
| Oct 23, 2021 | 156.855 m | ▲ 0.353 m |
| Oct 23, 2020 | 157.077 m | ▲ 0.575 m |
| Oct 23, 2019 | 156.435 m | ▼ 0.067 m |
| Oct 23, 2018 | 156.388 m | ▼ 0.114 m |
| Oct 23, 2017 | 156.426 m | ▼ 0.076 m |
| Oct 23, 2016 | 156.452 m | ▼ 0.050 m |
Records & details
- Highest
- 157.275 m on Sep 7, 2020
- Lowest
- 155.832 m on Nov 20, 2023
- Records from
- 1934 (93 years of daily data)
- Water temperature
- Not measured here