Prelude Lake at Yellowknife
Water level and flow at gauge 07SB017, Northwest Territories. The level is below normal for October. In the last 24 hours it has been steady.
Latest reading Oct 25, 8 AM local standard time (about an hour ago) · data checked · we check every 30 minutes
Compared with a normal October
Normal for October (middle half of 30 years of monthly averages): 169.06 m554.65 ft – 169.27 m555.35 ft, median 169.19 m555.09 ft.
June 12, 2001 · approved records 1995–2025 (HYDAT). Right now the level is 1.17 m3.85 ft below that record.
0.03 m0.08 ft lower than on October 25, 2025 (169.06 m554.66 ft)
approved daily mean (HYDAT)
Last 30 days
Hourly readings · shaded: normal range for this month
This year compared with past years
Daily water level
Normal range: monthly averages of 29 years (lighter band: 10th–90th percentile). Past years: approved daily means from HYDAT, the Water Survey of Canada archive (the latest year published is 2025). 2026: daily means of the provisional real-time readings collected by Canada River Levels since October 22, 2026.
Weather near this gauge
A mix of sun and cloud. Clearing late this afternoon. Wind becoming south 20 km/h gusting to 40 near noon. High plus 2. Wind chill minus 13 this morning.
Clear. Becoming partly cloudy this evening. Wind south 20 km/h gusting to 40. Low minus 1.
Sunny. Wind southwest 20 km/h gusting to 40 becoming light in the afternoon. High plus 1. Wind chill minus 7 in the morning. UV index 1 or low.
Clear. Low minus 7.
Forecast for Yellowknife (25 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Prosperous LakeMcMeekan Bay · 11 km | 158.11 m518.74 ft | Below normal |
| Yellowknife RiverOutlet of Prosperous Lake · 13 km | — | Below normal |
| Yellowknife RiverInlet To Prosperous Lake · 18 km | 152.77 m501.21 ft | Below normal |
| Bluefish LakeYellowknife · 18 km | 185.76 m609.44 ft | Normal |
| Baker CreekOutlet of Lower Martin Lake · 24 km | 28.95 m94.96 ft | Below normal |
| Great Slave LakeYellowknife Bay · 25 km | 156.54 m513.59 ft | Normal |
About this gauge
Station: 07SB017 · Prelude Lake Near Yellowknife
Location: 62.5836, -113.9735 · Northwest Territories
Water levels are measured from a local reference point at each gauge, not from sea level, so they cannot be compared between gauges.
Official sources
For flood warnings, advisories and approved data, always use these official services:
Questions
What is the water level of the Prelude Lake at Yellowknife today?
The latest reading (Oct 25, 8 AM, local standard time) is 169.03 m (554.57 ft).
Is the Prelude Lake at Yellowknife high right now?
The level is below normal for October.
Is the Prelude Lake rising or falling?
In the last 24 hours it has been steady.
What is the highest water level ever recorded on the Prelude Lake at Yellowknife?
170.21 m (558.42 ft) on June 12, 2001, the highest instantaneous level in the approved records of the Water Survey of Canada (1995–2025). Events after 2025 are not yet in the approved archive.
How does the Prelude Lake at Yellowknife compare with a year ago?
The level is 0.03 m (0.08 ft) lower than on October 25, 2025 (169.06 m (554.66 ft), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 07SB017 of the Water Survey of Canada (Environment and Climate Change Canada). Real-time data are provisional and may be revised. We check for new readings every 30 minutes. Canada River Levels is not an official source.