North Branch Muskoka River at Port Sydney
Water level and flow at gauge 02EB004, Ontario. The flow is below normal for October (44% of the median). In the last 24 hours it has been steady.
Latest reading Oct 25, 10 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 110 years of monthly averages): 7.45 m³/s263 cfs – 23.6 m³/s833 cfs, median 14.4 m³/s509 cfs. Right now it is at 44% of the median.
April 23, 2013 · approved records 1987–2024 (HYDAT). Right now the flow is 3% of that record.
Last 30 days
Hourly readings · shaded: normal range for this month
This year compared with past years
Daily flow
Normal range: monthly averages of 109 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
Sunny. Becoming a mix of sun and cloud this afternoon. Wind southwest 20 km/h. High 17. UV index 3 or moderate.
Mainly cloudy. 40 percent chance of showers late this evening and overnight. Low 9.
Mainly cloudy. 40 percent chance of showers early in the morning. Clearing late in the afternoon. Wind north 20 km/h becoming light late in the morning. High 11. UV index 3 or moderate.
Clear. Low minus 6.
Forecast for Huntsville (14 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Mary LakePort Sydney · 1 km | 8.47 m27.79 ft | Below normal |
| Fairy LakeHuntsville · 13 km | 6.25 m20.50 ft | Very low |
| Lake of BaysBaysville · 15 km | 10.21 m33.49 ft | Normal |
| South Branch Muskoka RiverBaysville · 15 km | 7.42 m24.35 ft | Very low |
| Big East RiverHuntsville · 22 km | 5.12 m16.80 ft | Very low |
| Lake MuskokaBeaumaris · 23 km | 9.32 m30.56 ft | Below normal |
About this gauge
Station: 02EB004 · North Branch Muskoka River at Port Sydney
Location: 45.2129, -79.2753 · Ontario
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 North Branch Muskoka River at Port Sydney today?
The latest reading (Oct 25, 10 AM, local standard time) is 0.73 m (2.41 ft) with a flow of 6.29 m³/s (222 cfs).
Is the North Branch Muskoka River at Port Sydney high right now?
The flow is below normal for October (44% of the median).
Is the North Branch Muskoka River rising or falling?
In the last 24 hours it has been steady.
What is the highest flow ever recorded on the North Branch Muskoka River at Port Sydney?
206 m³/s (7,275 cfs) on April 23, 2013, the highest instantaneous flow in the approved records of the Water Survey of Canada (1987–2024). Events after 2024 are not yet in the approved archive.
Where does this data come from?
Gauge 02EB004 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.