Moon River at Highway No. 400
Water level and flow at gauge 02EB011, Ontario. The flow is well below normal for October (18% of the median). In the last 24 hours it has been falling.
Latest reading Oct 25, 12 PM local standard time (2 hours ago) · data checked · we check every 30 minutes
Compared with a normal October
Normal for October (middle half of 60 years of monthly averages): 1.25 m³/s44.2 cfs – 23.1 m³/s817 cfs, median 3.74 m³/s132 cfs. Right now it is at 18% of the median.
May 3, 2019 · approved records 1966–2024 (HYDAT). Right now the flow is 0% 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 59 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
Mainly sunny. Wind southwest 20 km/h becoming light this afternoon. High 17. UV index 3 or moderate.
Mainly cloudy. 30 percent chance of showers overnight. Low 9.
Mainly cloudy. 30 percent chance of showers in the morning. Clearing late in the afternoon. Wind north 20 km/h becoming light late in the morning. High 12. UV index 3 or moderate.
Clear. Low minus 6.
Forecast for Port Carling (17 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Musquash RiverHighway No. 400 · 5 km | 8.54 m28.01 ft | Very low |
| Go Home LakePotters Landing · 9 km | 185.22 m607.67 ft | Very high |
| Bala BayBala · 15 km | 225.18 m738.79 ft | Below normal |
| Lake RosseauPort Carling · 18 km | 8.77 m28.78 ft | Below normal |
| Lake MuskokaBeaumaris · 23 km | 9.31 m30.55 ft | Below normal |
| North RiverThe Falls · 37 km | 0.78 m2.54 ft | Below normal |
About this gauge
Station: 02EB011 · Moon River at Highway No. 400
Location: 45.0651, -79.7901 · 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 Moon River at Highway No. 400 today?
The latest reading (Oct 25, 12 PM, local standard time) is 0.99 m (3.23 ft) with a flow of 0.67 m³/s (23.5 cfs).
Is the Moon River at Highway No. 400 high right now?
The flow is well below normal for October (18% of the median).
Is the Moon River rising or falling?
In the last 24 hours it has been falling.
What is the highest flow ever recorded on the Moon River at Highway No. 400?
345 m³/s (12,184 cfs) on May 3, 2019, the highest instantaneous flow in the approved records of the Water Survey of Canada (1966–2024). Events after 2024 are not yet in the approved archive.
Where does this data come from?
Gauge 02EB011 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.