Rainy River at Rainy River Water Level
Live river level, flow, historical records and forecast for Rainy River at Rainy River in ON, Canada, built from official government gauge data.
- Location ON, Canada
- Watershed lower rainy
- Primary gauge 05PC021 (Water Survey of Canada)
About Rainy River at Rainy River
Rainy River at Rainy River is a river in the Lower Rainy watershed in Ontario.
The watershed
This gauge watches 53800 km2 (20772 sq mi) upstream of the station, so the reading here reflects a broad reach, not just the water beside town. For people who live on the river, that means the level can change with conditions far upstream as well as local weather.
The seasonal pattern is clear. The highest typical month is July, at 323.15 m (1060.22 ft), and the lowest typical month is March, at 322.63 m (1058.49 ft). The typical annual swing is 52.8 cm (20.8 in). That is the range a dock, intake, or shoreline setup has to accommodate from the quieter end of the year to the higher summer period.
What the numbers say
The record high is 325.08 m (1066.52 ft) in June 2014. The record low is 322.25 m (1057.25 ft) in March 1999. Those two marks sit a little more than 2.8 m (9.3 ft) apart, which is enough to change how shallow edges behave, where boats can run, and how far a fixed ladder or cribbing reaches the water.
With 34 years on record, this station gives a useful long view, even though it does not list a fastest 24-hour rise here. For users on the river, the main takeaway is the repeatable seasonal shape: higher water into summer, lower water toward late winter and early spring, and a modest typical swing compared with the full record range.
Reading the hero number
The hero number on this page is today’s reading set against the median for this calendar day across the station’s record. That is more useful than raw elevation because a level only matters in context: the same height can be ordinary on one date and unusual on another.
For this gauge, the comparison is grounded in more than 34 years of record. It tells you whether the river is running near its usual level for this day, which is what matters for access, shoreline use, and day-to-day planning.
How this page is built
Readings come from official government gauges and are rolled into daily records: the daily mean, high and low for every day on record. Each calendar day gets its own baseline from the full history, so the level you see is compared against what this specific date usually looks like rather than an annual average.
How Nibi Metrics works · Water stories
Nibi Metrics - live water levels, flow, and forecasts for lakes and rivers across Canada, the US and the UK
Real-time water levels, forecasts, and alerts for lakes and rivers across Canada, the US and the UK. Built on official government data.
Nibi Metrics tracks more than 13,000 gauged lakes and rivers across Canada, the United States and the United Kingdom, reading directly from official federal monitoring networks: the Water Survey of Canada, the United States Geological Survey, Quebec's provincial hydrometric network, and the Environment Agency for England. Every number on the platform is measured, not modelled - taken from a government gauge on the water itself and compared against that location's own historical record for this exact date.
What you can see for any monitored lake or river
The level right now, in feet or metres, updated as the source agency publishes new readings - for many stations that is every five to fifteen minutes. How today compares to typical: every location carries its own typical-for-this-date band built from its historical record, so a reading is never just a number - it is above, below, or near what this water usually does on this calendar day. Which way it is moving: a measured RISING, FALLING, or STEADY verdict computed from the gauge's own recent readings, with the rate of change - the difference between a flood ending and one beginning. What comes next: level forecasts up to 72 hours ahead, driven by the gauge's recent behaviour, upstream water, and quantitative precipitation forecasts, alongside live radar, lightning, and weather for the surrounding region.
Alerts that watch the water for you
Set a threshold on any location - a level, a distance above typical, or a rate of climb - and Nibi emails or notifies you the moment the gauge crosses it. Cottagers use it for spring freshet, anglers for river conditions, marinas and municipalities for operations. The scanning runs around the clock against the same measured data shown on every page.
Where Nibi comes from
Nibi means water in Anishinaabemowin. The platform began at a family cottage on Lake Muskoka, Ontario, where the spring melt floods the shoreline most years and the only forecast was standing on the dock, looking, and guessing. It grew into an independent, member-funded platform run by Muskoka Research Inc. - no investors, no data resale, and a privacy policy shorter than most cookie banners. The core data is free for everyone, forever; paid plans add automation like multi-location alerts, deep history, and reports.
Coverage
Nibi spans the continent: every Canadian province and territory with active federal gauges - from Vancouver Island rivers to the Muskoka lakes, prairie reservoirs, and Quebec's hydrometric network - and the United States from Maine to the Texas Hill Country, the Ohio Valley, and the Pacific Northwest. Coverage grows where the water news is: when a basin floods, its gauges join the platform with their full historical records attached. Many stations report every five to fifteen minutes; most report at least hourly; every page states exactly when its gauge last spoke.
Free forever, funded by members
The core promise is simple: the water data is free, for everyone, forever. Live levels, maps, radar, and recent history never sit behind a paywall. Paid plans fund the platform by adding automation - multi-location alerts, decades of history, longer forecasts, and PDF reports - so the people who need more carry the cost for everyone who just needs to check the lake before driving up. There are no investors and no advertising deals shaping what the data says.
Water Stories
Field notes and explainers from the Nibi desk - how to read a staff gauge, what a 100-year flood actually means, how snowpack becomes summer water.
For five years, spring 2019 was the mark every Lake Muskoka decision answered to. In April 2026 the lake went two centimeters higher - and the official books have not caught up yet.
Inside the freshet cycle that puts Manitoba shorelines at risk each year - and why 2026 broke the script.
The science of snow water equivalent and why it drives the season ahead.
What the numbers on the measuring stick actually tell you.
Why Central and South Texas rivers go from gravel beds to fifty-year records in an afternoon - including July 2026 on the Nueces.
One percent, every year, forever - unwrapping hydrology's most misunderstood phrase, and how it differs from our own percentiles.
How every number is computed - About the platform
