Lac Memphrémagog Water Level

Live river level, flow, historical records and forecast for Lac Memphrémagog in Canada, QC, Canada, built from official government gauge data.

About Lac Memphrémagog

Lac Memphrémagog is a gauged lake in the Upper Saint-François watershed, Quebec.

Season by season

The seasonal pattern is clear enough for anyone with a dock or shoreline intake to plan around. The typical high point comes in May at 208.01 m (682.46 ft), after the spring freshet. By March, the lake is typically at 207.5 m (680.77 ft), before the freshet lifts levels again. The typical annual swing is 51.5 cm (20.3 in), which is not a large range, but it is enough to notice at a fixed landing or pump.

The regional note fits the record here: strong spring freshet in April-May, summer low water, and early ice formation. On this lake, that means the shoulder seasons matter most for access and for anything set close to shore.

Records and rises

The station record covers 106 years. Within that span, the highest level listed is 209.22 m (686.43 ft) in November 1927, and the lowest is 206.76 m (678.34 ft) in October 1921. Those are the outside edges of what this reach has shown, and they are useful reference points for anyone checking how far today sits from the long view.

For day-to-day use, the seasonal range is often the more practical number. A dock, crib, or intake does not need to match the 1927 high or the 1921 low; it needs to handle the usual year-to-year move between the March low and the May high.

Reading the hero number

The hero reading on this page is compared with the median for this calendar day across the station’s record, not with raw elevation alone. That makes it easier to tell whether today is ordinary for the date, or out of step with the lake’s normal seasonal position.

The station operator uses that longer record to give context. With 106 years on record, the median for the day is a stronger benchmark than a single level reading, because it shows where the lake stands against its usual rhythm rather than against an isolated moment.

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.

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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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