French River at Hartley Bay
Water level and flow at gauge 02DD025, Ontario. The level is normal for October. In the last 24 hours it has been rising.
Latest reading Oct 25, 1 PM 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 16 years of monthly averages): 177.64 m582.81 ft – 178.62 m586.03 ft, median 178.16 m584.53 ft.
April 21, 2019 · approved records 2009–2025 (HYDAT). Right now the level is 2.41 m7.91 ft below that record.
0.49 m1.61 ft higher than on October 25, 2025 (177.41 m582.06 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 14 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
Cloudy with 40 percent chance of showers. Wind southwest 20 km/h gusting to 40. High 16. UV index 3 or moderate.
Cloudy with 40 percent chance of showers this evening. Clearing late this evening. Wind southwest 20 km/h becoming light this evening. Low plus 4.
A mix of sun and cloud. Wind becoming north 20 km/h in the morning. High 8. UV index 3 or moderate.
Clear. Low minus 7.
Forecast for Greater Sudbury (54 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| French RiverDry Pine Bay · 12 km | 1.19 m3.89 ft | Normal |
| French RiverRecollet Falls · 12 km | — | No normal yet |
| French RiverLittle French Cut · 17 km | — | No normal yet |
| Wanapitei RiverHighway 637 · 19 km | 15.86 m52.04 ft | No normal yet |
| French RiverHorseshoe Falls · 22 km | — | No normal yet |
| Pickerel RiverAbove Cantin Lake · 28 km | 16.62 m54.53 ft | No normal yet |
About this gauge
Station: 02DD025 · French River at Hartley Bay
Location: 46.0352, -80.7601 · Ontario
Same river: Dry Pine Bay, Chaudiere Dam, Wolseley Bay, Below Portage Dam, Recollet Falls, Little French Cut, Horseshoe Falls
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 French River at Hartley Bay today?
The latest reading (Oct 25, 1 PM, local standard time) is 177.90 m (583.66 ft).
Is the French River at Hartley Bay high right now?
The level is normal for October.
Is the French River rising or falling?
In the last 24 hours it has been rising.
What is the highest water level ever recorded on the French River at Hartley Bay?
180.31 m (591.57 ft) on April 21, 2019, the highest instantaneous level in the approved records of the Water Survey of Canada (2009–2025). Events after 2025 are not yet in the approved archive.
How does the French River at Hartley Bay compare with a year ago?
The level is 0.49 m (1.61 ft) higher than on October 25, 2025 (177.41 m (582.06 ft), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 02DD025 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.