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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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.
Lesser Slave Lake Water Level
Live lake level, flow, historical records and forecast for Lesser Slave Lake in 75-10-W5, AB, Canada, built from official government gauge data.
- Location 75-10-W5, AB, Canada
- Watershed lesser slave lake
- Primary gauge 07BJ001 (Water Survey of Canada)
About Lesser Slave Lake
Lesser Slave Lake - A significant waterbody in Alberta's landscape.
Lesser Slave Lake, located in Alberta, is a notable lake that plays an essential role in the region’s hydrology. Covering a large surface area, it serves as an important habitat as well as a resource for various recreational activities.
## The watershed context The lake is part of the Lesser Slave Lake watershed, which is characterized by its expansive drainage area of roughly 1,890 square kilometres. This watershed helps to collect and manage water from the surrounding landscape, influenced largely by mountain snowmelt during the late spring, which generally drives peak water levels, and summer storms that can lead to sudden rises. These natural events are vital for maintaining the ecological balance within the lake and surrounding environments.
## Why the data matters here Understanding the current water conditions at Lesser Slave Lake is essential for monitoring its health and managing the aquatic ecosystems it supports. Today's readings from the gauge at this site will be compared against the historical median for this calendar day over the past fifty years, providing a clearer perspective on fluctuations in water levels. This analysis, conducted by the Water Survey of Canada (WSC), helps to illustrate how current conditions measure up against typical patterns—offering insight into potential impacts from seasonal changes or climate variability.
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
