Rattle Brook at Boat Harbour
Water level and flow at gauge 02ZG004, Newfoundland and Labrador. The flow is well below normal for October (30% of the median). In the last 24 hours it has been falling.
Latest reading Oct 25, 10 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 44 years of monthly averages): 1.40 m³/s49.4 cfs – 2.89 m³/s102 cfs, median 2.04 m³/s72.2 cfs. Right now it is at 30% of the median.
September 21, 2010 · approved records 1981–2024 (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 44 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
Mainly sunny. Wind northwest 20 km/h gusting to 40 becoming west 20 this afternoon. High 12. UV index 2 or low.
A few clouds. Wind west 20 km/h becoming southwest 20 gusting to 40 overnight. Low 6.
Sunny. Becoming a mix of sun and cloud in the afternoon. Wind southwest 30 km/h gusting to 50. High 12. UV index 3 or moderate.
Cloudy with 60 percent chance of showers. Low plus 4.
Forecast for Marystown (39 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Garnish RiverGarnish · 44 km | 1.07 m3.51 ft | Normal |
| Bay du Nord RiverBig Falls · 55 km | 1.32 m4.34 ft | Very low |
| Pipers Hole RiverMothers Brook · 70 km | 0.68 m2.22 ft | Very low |
| Rattling BrookBelow Plant Discharge · 79 km | 72.58 m238.13 ft | Normal |
| Rattling BrookBelow Bridge · 79 km | 83.34 m273.44 ft | Normal |
| Northeast RiverPlacentia · 79 km | 1.46 m4.80 ft | Normal |
About this gauge
Station: 02ZG004 · Rattle Brook Near Boat Harbour
Location: 47.4500, -54.8530 · Newfoundland and Labrador
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 Rattle Brook at Boat Harbour today?
The latest reading (Oct 25, 10 AM, local standard time) is 1.42 m (4.64 ft) with a flow of 0.61 m³/s (21.4 cfs).
Is the Rattle Brook at Boat Harbour high right now?
The flow is well below normal for October (30% of the median).
Is the Rattle Brook rising or falling?
In the last 24 hours it has been falling.
What is the highest flow ever recorded on the Rattle Brook at Boat Harbour?
126 m³/s (4,450 cfs) on September 21, 2010, the highest instantaneous flow in the approved records of the Water Survey of Canada (1981–2024). Events after 2024 are not yet in the approved archive.
Where does this data come from?
Gauge 02ZG004 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.