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.
Water Stories
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.
Lac Saint-louis Water Level
Live river level, flow, historical records and forecast for Lac Saint-louis in Canada, QC, Canada, built from official government gauge data.
- Location Canada, QC, Canada
- Watershed st lawrence river
- Primary gauge 02OA039 (Water Survey of Canada)
About Lac Saint-louis
Lac Saint-Louis - A vital waterway in the St. Lawrence River basin.
Located in Quebec, Lac Saint-Louis serves as an important hub within the greater St. Lawrence River watershed, impacting both the ecology and the communities it touches. This expansive lacustrine environment not only supports recreational activities but also nourishes diverse ecosystems. Draining roughly 951,000 square kilometres above the station, Lac Saint-Louis plays a vital role in the overall hydrology of the region.
Why the data matters here
Understanding Lac Saint-Louis involves appreciating its seasonal dynamics. The area typically experiences a strong spring freshet from April to May due to snowmelt, with water levels rising considerably during this period. Summer low water levels follow, providing insight into natural evaporation rates and inflow variations throughout the warmer months. Early ice formation signals the transition into winter, with the cycle beginning anew each year.
Regular monitoring of water levels and conditions is essential for those who rely on this waterway—be it for fishing, boating, or agriculture. Today's reading from the station "Saint-Louis (Lac) à Pointe-Claire," compared against the median for this calendar day over the last approximately 50 years, gives valuable insight into current conditions relative to historical patterns. This context is crucial; knowing the water level in relation to this median allows locals and visitors alike to navigate the lake more wisely, aiding their various activities in this vibrant region.
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
