North Thames River below Fanshawe Dam
Water level and flow at gauge 02GD003, Ontario. The flow is normal for October (62% of the median). In the last 24 hours it has been steady.
Latest reading Oct 25, 9 AM 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 93 years of monthly averages): 2.13 m³/s75.2 cfs – 9.85 m³/s348 cfs, median 4.24 m³/s150 cfs. Right now it is at 62% of the median.
March 28, 1963 · approved records 1954–2024 (HYDAT). Right now the flow is 0% 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 92 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 (9 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Stoney CreekLondon · 6 km | 7.04 m23.08 ft | Very low |
| Thames RiverEaling · 8 km | 0.41 m1.33 ft | Below normal |
| Medway RiverLondon · 8 km | 3.53 m11.59 ft | Normal |
| Thames RiverByron · 15 km | 1.71 m5.60 ft | Below normal |
| Middle Thames RiverThamesford · 15 km | 8.84 m29.00 ft | Very low |
| Dingman CreekBelow Lambeth · 18 km | 4.81 m15.78 ft | Very low |
Official sources
For flood warnings, advisories and approved data, always use these official services:
Questions
What is the water level of the North Thames River below Fanshawe Dam today?
The latest reading (Oct 25, 9 AM, local standard time) is 6.20 m (20.34 ft) with a flow of 2.64 m³/s (93.2 cfs).
Is the North Thames River below Fanshawe Dam high right now?
The flow is normal for October (62% of the median).
Is the North Thames River rising or falling?
In the last 24 hours it has been steady.
What is the highest flow ever recorded on the North Thames River below Fanshawe Dam?
654 m³/s (23,096 cfs) on March 28, 1963, the highest instantaneous flow in the approved records of the Water Survey of Canada (1954–2024). Events after 2024 are not yet in the approved archive.
Where does this data come from?
Gauge 02GD003 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.