Saint John River at Grand Falls
Water level and flow at gauge 01AF002, New Brunswick. The flow is well below normal for October (19% of the median). In the last 24 hours it has been falling.
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 95 years of monthly averages): 154 m³/s5,438 cfs – 381 m³/s13,437 cfs, median 246 m³/s8,687 cfs. Right now it is at 19% of the median.
May 1, 2008 · approved records 1931–2024 (HYDAT). Right now the flow is 1% 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 95 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. High 17. UV index 3 or moderate.
Clear. Increasing cloudiness after midnight then 30 percent chance of showers before morning. Wind becoming southwest 20 km/h this evening. Low plus 5.
A mix of sun and cloud with 30 percent chance of showers. Wind southwest 20 km/h becoming northwest 20 gusting to 40 in the afternoon. High 15. UV index 3 or moderate.
Cloudy periods. Low minus 3.
Forecast for Grand Falls (1 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Aroostook RiverTinker · 25 km | 2.40 m7.88 ft | Very low |
| Grande RiviereViolette Bridge · 27 km | 0.33 m1.09 ft | Very low |
| Tobique RiverPlaster Rock · 30 km | 97.00 m318.24 ft | No normal yet |
| Tobique RiverRiley Brook · 43 km | 1.38 m4.51 ft | Very low |
| Saint John RiverEdmundston · 57 km | 134.32 m440.68 ft | Very low |
| Iroquois RiverMoulin Morneault · 66 km | 3.39 m11.11 ft | Very low |
About this gauge
Station: 01AF002 · Saint John River at Grand Falls
Location: 47.0389, -67.7397 · New Brunswick
Same river: Edmundston, Fredericton, Maugerville, Upper Gagetown, Gagetown, Oak Point, Saint John
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 Saint John River at Grand Falls today?
The latest reading (Oct 25, 1 PM, local standard time) is 88.87 m (291.56 ft) with a flow of 47.6 m³/s (1,681 cfs).
Is the Saint John River at Grand Falls high right now?
The flow is well below normal for October (19% of the median).
Is the Saint John River rising or falling?
In the last 24 hours it has been falling.
What is the highest flow ever recorded on the Saint John River at Grand Falls?
7,500 m³/s (264,860 cfs) on May 1, 2008, the highest instantaneous flow in the approved records of the Water Survey of Canada (1931–2024). Events after 2024 are not yet in the approved archive.
Where does this data come from?
Gauge 01AF002 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.