Grand River at West Montrose
Water level and flow at gauge 02GA034, Ontario. The flow is well below normal for October (54% of the median). In the last 24 hours it has been steady.
Latest reading Oct 25, 6 AM local standard time (3 hours ago) · data checked · we check every 30 minutes
Compared with a normal October
Normal for October (middle half of 55 years of monthly averages): 4.78 m³/s169 cfs – 11.2 m³/s394 cfs, median 6.27 m³/s221 cfs. Right now it is at 54% of the median.
May 17, 1974 · approved records 1968–2025 (HYDAT). Right now the flow is 1% of that record.
6% lower than on October 25, 2025 (3.59 m³/s127 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 54 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. Fog patches dissipating this morning. Wind becoming southwest 20 km/h this afternoon. High 18. UV index 4 or moderate.
A few clouds. Low 7.
Cloudy. Wind becoming northwest 20 km/h late in the morning. High 16. UV index 3 or moderate.
Cloudy. Low minus 2.
Forecast for Kitchener-Waterloo (1 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Canagagigue CreekElmira · 2 km | 9.70 m31.84 ft | Normal |
| Conestogo RiverSt. Jacobs · 8 km | 0.28 m0.93 ft | Normal |
| Irvine RiverSalem · 12 km | 1.70 m5.57 ft | Very low |
| Laurel CreekWaterloo · 13 km | 3.00 m9.84 ft | Normal |
| Speed RiverArmstrong Mills · 18 km | 1.04 m3.40 ft | Very low |
| Speed RiverBelow Guelph · 19 km | 0.60 m1.97 ft | Normal |
About this gauge
Official sources
For flood warnings, advisories and approved data, always use these official services:
Questions
What is the water level of the Grand River at West Montrose today?
The latest reading (Oct 25, 6 AM, local standard time) is 11.10 m (36.40 ft) with a flow of 3.38 m³/s (119 cfs).
Is the Grand River at West Montrose high right now?
The flow is well below normal for October (54% of the median).
Is the Grand River rising or falling?
In the last 24 hours it has been steady.
What is the highest flow ever recorded on the Grand River at West Montrose?
674 m³/s (23,802 cfs) on May 17, 1974, the highest instantaneous flow in the approved records of the Water Survey of Canada (1968–2025). Events after 2025 are not yet in the approved archive.
How does the Grand River at West Montrose compare with a year ago?
The flow is 6% lower than on October 25, 2025 (3.59 m³/s (127 cfs), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 02GA034 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.