Graham Creek at Nepean
Water level and flow at gauge 02KF015, Ontario. The flow is normal for October (91% of the median). In the last 24 hours it has been falling.
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 28 years of monthly averages): 0.09 m³/s3.16 cfs – 0.20 m³/s7.11 cfs, median 0.12 m³/s4.15 cfs. Right now it is at 91% of the median.
April 11, 2011 · approved records 1988–2025 (HYDAT). Right now the flow is 1% of that record.
197% higher than on October 25, 2025 (0.04 m³/s1.27 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. Wind becoming southwest 20 km/h late this morning. High 17. UV index 3 or moderate.
A few clouds. Increasing cloudiness late this evening then 30 percent chance of showers before morning. Low 9.
Cloudy. 60 percent chance of showers in the morning. Becoming a mix of sun and cloud in the afternoon. Wind becoming northwest 20 km/h in the morning. High 14. UV index 2 or low.
Clear. Low minus 2.
Forecast for Ottawa (Kanata - Orléans) (11 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Ottawa RiverBritannia · 2 km | 57.82 m189.71 ft | Normal |
| Rideau RiverOttawa · 10 km | 3.07 m10.08 ft | Very high |
| Jock RiverRichmond · 11 km | 6.34 m20.80 ft | Above normal |
| Outaouais A Hull02LA015 · 13 km | 41.27 m135.38 ft | Below normal |
| Rideau RiverBelow Manotick · 13 km | 4.10 m13.46 ft | Very high |
| Rideau RiverAbove Rideau Falls · 14 km | 4.97 m16.29 ft | Very high |
About this gauge
Station: 02KF015 · Graham Creek at Nepean
Location: 45.3436, -75.8081 · 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 Graham Creek at Nepean today?
The latest reading (Oct 25, 9 AM, local standard time) is 0.83 m (2.71 ft) with a flow of 0.11 m³/s (3.78 cfs).
Is the Graham Creek at Nepean high right now?
The flow is normal for October (91% of the median).
Is the Graham Creek rising or falling?
In the last 24 hours it has been falling.
What is the highest flow ever recorded on the Graham Creek at Nepean?
8.52 m³/s (301 cfs) on April 11, 2011, the highest instantaneous flow in the approved records of the Water Survey of Canada (1988–2025). Events after 2025 are not yet in the approved archive.
How does the Graham Creek at Nepean compare with a year ago?
The flow is 197% higher than on October 25, 2025 (0.04 m³/s (1.27 cfs), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 02KF015 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.