Nipigon River below Alexander Generating Station
Water level and flow at gauge 02AD012, Ontario. The flow is normal for October (100% of the median). In the last 24 hours it has been steady.
Latest reading Oct 25, 7 AM local standard time (2 hours ago) · data checked · we check every 30 minutes
Compared with a normal October
Normal for October (middle half of 18 years of monthly averages): 286 m³/s10,100 cfs – 394 m³/s13,896 cfs, median 321 m³/s11,318 cfs. Right now it is at 100% of the median.
August 26, 2009 · approved records 2008–2025 (HYDAT). Right now the flow is 47% of that record.
14% higher than on October 25, 2025 (283 m³/s9,994 cfs)
approved daily mean (HYDAT)
Last 30 days
Hourly readings · shaded: normal range for this month
This year compared with past years
Daily flow
Normal range: monthly averages of 18 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
Clearing early this morning. Wind becoming northwest 20 km/h gusting to 40 late this morning. High 12. UV index 2 or low.
Clear. Increasing cloudiness late this evening. Wind northwest 20 km/h gusting to 40. Low minus 2.
Mainly cloudy. Wind up to 15 km/h. High plus 5. Wind chill minus 6 in the morning. UV index 2 or low.
Cloudy periods. Low minus 6.
Forecast for Nipigon (14 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Nipigon RiverBelow Polly Lake · 8 km | 183.67 m602.59 ft | No normal yet |
| Black Sturgeon RiverHighway No. 17 · 24 km | 186.44 m611.66 ft | Very low |
| Wolf RiverHighway No. 17 · 36 km | 189.89 m623.00 ft | Below normal |
| Gravel RiverCavers · 53 km | 3.20 m10.51 ft | Below normal |
| Blackwater RiverBeardmore · 60 km | 300.80 m986.87 ft | Very low |
| Whitesand RiverAbove Schreiber at Minova Mine · 73 km | 3.08 m10.10 ft | Very low |
About this gauge
Station: 02AD012 · Nipigon River Below Alexander Generating Station
Location: 49.1227, -88.3579 · Ontario
Same river: Below Polly Lake
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 Nipigon River below Alexander Generating Station today?
The latest reading (Oct 25, 7 AM, local standard time) is 26.64 m (87.40 ft) with a flow of 322 m³/s (11,371 cfs).
Is the Nipigon River below Alexander Generating Station high right now?
The flow is normal for October (100% of the median).
Is the Nipigon River rising or falling?
In the last 24 hours it has been steady.
What is the highest flow ever recorded on the Nipigon River below Alexander Generating Station?
692 m³/s (24,438 cfs) on August 26, 2009, the highest instantaneous flow in the approved records of the Water Survey of Canada (2008–2025). Events after 2025 are not yet in the approved archive.
How does the Nipigon River below Alexander Generating Station compare with a year ago?
The flow is 14% higher than on October 25, 2025 (283 m³/s (9,994 cfs), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 02AD012 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.