Nibi Metrics
Real-time water levels, forecasts, and alerts for lakes and rivers across Canada and the US. Built on official government data.
Nibi Metrics turns raw gauge readings from official hydrometric networks into something a person standing on a dock can actually use: is the water high or low for today, which way is it moving, and how unusual is this? This page explains where every number on the platform comes from and what we do to it along the way.
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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.
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 - A central feature of the Upper Saint-François watershed.
Lac Aylmer, located in Quebec, serves as an important body of water within the Upper Saint-François watershed. This sizable lake provides vital ecological habitats and recreational opportunities while supporting the surrounding community. As a peer to Lac Memphrémagog, Lac Aylmer plays a significant role in both the hydrology and the cultural landscape of the region.
The watershed context
Lac Aylmer is situated in a drainage area that spans approximately 1,719 square kilometers, capturing runoff and seasonal water flow from the landscape around it. The lake is influenced by the typical seasonal rhythm of Quebec, characterized by a strong spring freshet from snowmelt during April and May. As the weather warms and ice melts, water levels can rise substantially, offering a vibrant awakening of the aquatic ecosystem. By summer, water levels generally experience a natural decline due to evaporation and lower inflows, marking a common seasonal transition seen across many lakes in the province.
Why the data matters here
Water data for Lac Aylmer is vital for understanding its current state and managing its resources, as provided by the Centre d'expertises hydriques du Québec (CEHQ). By comparing today’s readings to the historical median for this date, stakeholders can assess how the lake is responding to seasonal changes over time. Precise measurements help inform anglers, cottagers, and local residents about the lake's health and usability.
Today's reading is integral for evaluating the conditions of Lac Aylmer against the median for this calendar day across the station's historical record—a benchmark that enhances understanding of water levels over the years and trends within this vital ecosystem.
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
