Perch Creek at Sarnia
Water level and flow at gauge 02FF012, Ontario. The level is well below normal for October. In the last 24 hours it has been steady.
Latest reading Oct 25, 12 PM local standard time (2 hours ago) · data checked · we check every 30 minutes
Compared with a normal October
Normal for October (middle half of 15 years of monthly averages): 2.63 m8.63 ft – 3.02 m9.90 ft, median 2.70 m8.86 ft.
May 23, 2004 · approved records 2003–2018 (HYDAT). Right now the level is 4.05 m13.29 ft below that record.
Last 30 days
Hourly readings · shaded: normal range for this month
This year compared with past years
Daily water level
Normal range: monthly averages of 21 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 19. UV index 4 or moderate.
Partly cloudy. Fog patches developing overnight. Low 7.
A mix of sun and cloud. Fog patches dissipating in the morning. High 15. UV index 4 or moderate.
Clearing. Low plus 2.
Forecast for Sarnia (5 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Bear CreekPetrolia · 18 km | 4.12 m13.51 ft | Normal |
| Bear CreekBelow Brigden · 19 km | 3.92 m12.85 ft | Normal |
| Black CreekBradshaw · 25 km | 6.35 m20.84 ft | Normal |
| Sydenham RiverAlvinston · 42 km | 10.51 m34.47 ft | Below normal |
| Sydenham RiverWallaceburg · 44 km | 5.17 m16.97 ft | Normal |
| Sydenham RiverFlorence · 45 km | 3.06 m10.05 ft | Normal |
About this gauge
Station: 02FF012 · Perch Creek at Sarnia
Location: 42.9841, -82.3188 · Ontario
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 Perch Creek at Sarnia today?
The latest reading (Oct 25, 12 PM, local standard time) is 2.49 m (8.16 ft).
Is the Perch Creek at Sarnia high right now?
The level is well below normal for October.
Is the Perch Creek rising or falling?
In the last 24 hours it has been steady.
What is the highest water level ever recorded on the Perch Creek at Sarnia?
6.54 m (21.45 ft) on May 23, 2004, the highest instantaneous level in the approved records of the Water Survey of Canada (2003–2018). Events after 2018 are not yet in the approved archive.
Where does this data come from?
Gauge 02FF012 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.