Lac Aylmer Water Level
Live lake level, flow, historical records and forecast for Lac Aylmer in Canada, QC, Canada, built from official government gauge data.
- Location Canada, QC, Canada
- Watershed upper saint francois
- Primary gauge 030296 (Quebec CEHQ)
About Lac Aylmer
Lac Aylmer sits in the Upper Saint-François watershed in Quebec.
Season by season
This lake’s pattern is straightforward: the water usually climbs into May, then falls toward March. The typical May level is 48.65 m (159.61 ft), while the typical March level is 47.47 m (155.74 ft). That typical annual swing is 1.18 m (3.9 ft).
For people using the shoreline, that means a dock, landing, or shallow intake has to tolerate a range of about 1.18 m (3.9 ft) through the year. The seasonal note for this area points to a strong spring freshet in April and May, summer low water, and early ice formation. Those are the months to watch for the biggest change in access and water edge position.
Records and rises
The record high is 49.35 m (161.91 ft), set in May 2018. The record low is 46.96 m (154.07 ft), set in April 2015.
With 19 years on record, these two marks give a useful frame for what the lake has already shown. The gap between them is more than the usual seasonal swing, so the extremes matter for shoreline equipment, boat access, and any low-clearance structure that sits near the water.
No fastest 24-hour rise is listed here, so there is no short-term rise figure to use for warning time.
Reading the hero number
This page’s hero reading should be read against the median for the same calendar day, not as a raw elevation on its own. That comparison tells you whether Lac Aylmer is running high or low for this date, which is more useful than a single level on its own.
The station is run by Quebec’s CEHQ, and it covers an area of 1,719 km2 (664 sq mi) upstream of this station.
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 17,900+ lakes and rivers
Real-time water levels, forecasts, and alerts for lakes and rivers in a growing number of countries. Built on official government data.
Nibi Metrics tracks more than 17,900 gauged lakes and rivers in a growing number of countries, reading directly from official federal monitoring networks: the Water Survey of Canada, the United States Geological Survey, Quebec's provincial hydrometric network, the Environment Agency for England, the Scottish Environment Protection Agency, Natural Resources Wales, the Office of Public Works in Ireland (waterlevel.ie), the Norwegian Water Resources and Energy Directorate (NVE), the State of Queensland's water monitoring network, and on the Great Lakes the Canadian Hydrographic Service and NOAA. 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.
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