Grand River at Doon
Water level and flow at gauge 02GA048, Ontario. The flow is below normal for October (51% of the median). In the last 24 hours it has been rising.
Latest reading Oct 25, 7 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 20 years of monthly averages): 10.1 m³/s356 cfs – 21.2 m³/s749 cfs, median 16.3 m³/s574 cfs. Right now it is at 51% of the median.
June 24, 2017 · approved records 2006–2025 (HYDAT). Right now the flow is 1% of that record.
17% higher than on October 25, 2025 (7.05 m³/s249 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 19 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.
Partly cloudy. 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 Guelph (20 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Speed RiverCambridge · 7 km | 0.65 m2.13 ft | Below normal |
| Laurel CreekWaterloo · 10 km | 3.00 m9.84 ft | Normal |
| Grand RiverGalt · 11 km | 0.69 m2.28 ft | Normal |
| Alder CreekNew Dundee · 12 km | 12.88 m42.26 ft | Below normal |
| Conestogo RiverSt. Jacobs · 18 km | 0.28 m0.93 ft | Normal |
| Hunsburger CreekWilmot Centre · 18 km | 0.88 m2.88 ft | Very low |
About this gauge
Station: 02GA048 · Grand River Near Doon
Location: 43.4128, -80.4170 · Ontario
Same river: Galt, Marsville, Below Shand Dam, West Montrose, Dundalk, Brantford
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 Grand River at Doon today?
The latest reading (Oct 25, 7 AM, local standard time) is 4.03 m (13.22 ft) with a flow of 8.28 m³/s (292 cfs).
Is the Grand River at Doon high right now?
The flow is below normal for October (51% of the median).
Is the Grand River rising or falling?
In the last 24 hours it has been rising.
What is the highest flow ever recorded on the Grand River at Doon?
916 m³/s (32,348 cfs) on June 24, 2017, the highest instantaneous flow in the approved records of the Water Survey of Canada (2006–2025). Events after 2025 are not yet in the approved archive.
How does the Grand River at Doon compare with a year ago?
The flow is 17% higher than on October 25, 2025 (7.05 m³/s (249 cfs), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 02GA048 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.