Big Carp River at Sault Ste. Marie
Water level and flow at gauge 02BF004, Ontario. The flow is well below normal for October (11% of the median). In the last 24 hours it has been falling.
Latest reading Oct 25, 8 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 47 years of monthly averages): 0.57 m³/s20.2 cfs – 1.31 m³/s46.4 cfs, median 0.92 m³/s32.5 cfs. Right now it is at 11% of the median.
July 30, 2024 · approved records 1980–2025 (HYDAT). Right now the flow is 0% of that record.
59% lower than on October 25, 2025 (0.25 m³/s8.83 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 46 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 few showers ending late this afternoon then cloudy. Fog patches dissipating near noon. Wind becoming northwest 30 km/h late this morning. High 12. UV index 1 or low.
A few clouds. Increasing cloudiness after midnight. Wind northwest 30 km/h gusting to 50. Low plus 4.
Clearing in the morning. Wind becoming northwest 20 km/h in the afternoon. High 8. UV index 3 or moderate.
Cloudy periods. Low minus 5.
Forecast for Sault Ste. Marie (10 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Root RiverSault Ste. Marie · 15 km | 11.55 m37.91 ft | Very low |
| St. Marys RiverGarden River · 26 km | 24.02 m78.81 ft | Normal |
| Goulais RiverKirby'S Corner · 26 km | 2.89 m9.48 ft | Very low |
| Goulais RiverSearchmont · 54 km | 7.29 m23.93 ft | Very low |
| Batchawana RiverBatchawana · 54 km | 2.12 m6.94 ft | Very low |
| Thessalon RiverPoplar Dale · 58 km | 1.83 m5.99 ft | Below normal |
About this gauge
Station: 02BF004 · Big Carp River Near Sault Ste. Marie
Location: 46.5159, -84.4652 · 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 Big Carp River at Sault Ste. Marie today?
The latest reading (Oct 25, 8 AM, local standard time) is 2.47 m (8.12 ft) with a flow of 0.10 m³/s (3.60 cfs).
Is the Big Carp River at Sault Ste. Marie high right now?
The flow is well below normal for October (11% of the median).
Is the Big Carp River rising or falling?
In the last 24 hours it has been falling.
What is the highest flow ever recorded on the Big Carp River at Sault Ste. Marie?
34.3 m³/s (1,211 cfs) on July 30, 2024, the highest instantaneous flow in the approved records of the Water Survey of Canada (1980–2025). Events after 2025 are not yet in the approved archive.
How does the Big Carp River at Sault Ste. Marie compare with a year ago?
The flow is 59% lower than on October 25, 2025 (0.25 m³/s (8.83 cfs), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 02BF004 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.