Thames River at Byron
Water level and flow at gauge 02GE002, Ontario. The flow is below normal for October (59% of the median). In the last 24 hours it has been steady.
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 80 years of monthly averages): 8.80 m³/s311 cfs – 23.0 m³/s810 cfs, median 13.4 m³/s473 cfs. Right now it is at 59% of the median.
March 20, 1948 · approved records 1938–2025 (HYDAT). Right now the flow is 1% of that record.
65% lower than on October 25, 2025 (22.7 m³/s802 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 79 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. Becoming a mix of sun and cloud this afternoon. Fog patches dissipating this morning. High 19. UV index 4 or moderate.
A few clouds. Fog patches developing overnight. Low 7.
Mainly cloudy. Fog patches dissipating in the morning. High 16. UV index 4 or moderate.
Cloudy. Low plus 2.
Forecast for London (7 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Dingman CreekBelow Lambeth · 4 km | 4.81 m15.78 ft | Very low |
| Oxbow CreekKilworth · 7 km | 4.67 m15.31 ft | Normal |
| Medway RiverLondon · 7 km | 3.53 m11.59 ft | Normal |
| Stoney CreekLondon · 9 km | 7.03 m23.08 ft | Very low |
| Thames RiverEaling · 10 km | 0.40 m1.33 ft | Very low |
| North Thames RiverBelow Fanshawe Dam · 15 km | 6.20 m20.34 ft | Normal |
Official sources
For flood warnings, advisories and approved data, always use these official services:
Questions
What is the water level of the Thames River at Byron today?
The latest reading (Oct 25, 7 AM, local standard time) is 1.71 m (5.61 ft) with a flow of 7.85 m³/s (277 cfs).
Is the Thames River at Byron high right now?
The flow is below normal for October (59% of the median).
Is the Thames River rising or falling?
In the last 24 hours it has been steady.
What is the highest flow ever recorded on the Thames River at Byron?
1,270 m³/s (44,850 cfs) on March 20, 1948, the highest instantaneous flow in the approved records of the Water Survey of Canada (1938–2025). Events after 2025 are not yet in the approved archive.
How does the Thames River at Byron compare with a year ago?
The flow is 65% lower than on October 25, 2025 (22.7 m³/s (802 cfs), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 02GE002 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.