Kenogami River at Mammamattawa
Water level and flow at gauge 04JG001, Ontario. The flow is well below normal for October (20% of the median). In the last 24 hours it has been steady.
Latest reading Oct 25, 11 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 46 years of monthly averages): 183 m³/s6,463 cfs – 390 m³/s13,782 cfs, median 277 m³/s9,765 cfs. Right now it is at 20% of the median.
May 10, 2023 · approved records 1969–2025 (HYDAT). Right now the flow is 2% of that record.
21% higher than on October 25, 2025 (45.7 m³/s1,614 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 47 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.
Nearby gauges
| Nagagami RiverHighway No. 11 · 73 km | 1.38 m4.52 ft | Very low |
| Pagwachuan RiverHighway No. 11 · 95 km | 9.53 m31.27 ft | Very low |
| Mattawishkwia RiverHearst · 97 km | 4.92 m16.14 ft | Normal |
| Albany RiverHat Island · 108 km | 1.82 m5.97 ft | Very low |
| Missinaibi RiverMattice · 120 km | 0.33 m1.09 ft | Below normal |
| Little Current RiverPercy Lake · 155 km | 27.43 m90.00 ft | Very low |
About this gauge
Station: 04JG001 · Kenogami River Near Mammamattawa
Location: 50.4229, -84.3815 · 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 Kenogami River at Mammamattawa today?
The latest reading (Oct 25, 11 AM, local standard time) is 20.14 m (66.06 ft) with a flow of 55.1 m³/s (1,946 cfs).
Is the Kenogami River at Mammamattawa high right now?
The flow is well below normal for October (20% of the median).
Is the Kenogami River rising or falling?
In the last 24 hours it has been steady.
What is the highest flow ever recorded on the Kenogami River at Mammamattawa?
3,650 m³/s (128,899 cfs) on May 10, 2023, the highest instantaneous flow in the approved records of the Water Survey of Canada (1969–2025). Events after 2025 are not yet in the approved archive.
How does the Kenogami River at Mammamattawa compare with a year ago?
The flow is 21% higher than on October 25, 2025 (45.7 m³/s (1,614 cfs), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 04JG001 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.