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.
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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 la Croix Water Level
Live lake level, flow, historical records and forecast for Lac la Croix in Rainy River, ON, Canada, built from official government gauge data.
- Location Rainy River, ON, Canada
- Watershed upper rainy
- Primary gauge 05PA006 (Water Survey of Canada)
About Lac la Croix
Lac la Croix - A vital part of the Upper Rainy watershed.
Lac la Croix is a northern Ontario lake nestled within the scenic Upper Rainy watershed. This remarkable body of water is positioned in a naturally rich landscape, serving as both a habitat for wildlife and a resource for various recreational pursuits. Lac la Croix's proximity to Namakan Lake further elevates its ecological significance within the region.
The watershed context
The Upper Rainy watershed encompasses a substantial area, draining approximately 13,290 square kilometres. This expansive drainage area contributes to the lake's hydrology, which is significantly influenced by the seasonal patterns typical of northern Ontario. Snowmelt in late April to May prompts a spring freshet, where water levels can see marked increases. As summer unfolds, natural evaporation leads to a gradual drawdown from July through September. With the early winter months, as ice forms, water levels decline once more.
Why the data matters here
Data from the gauge, Namakan River At Outlet Of Lac La Croix, provides valuable insights into the hydrology of this important watershed. Monitoring the water levels allows for better understanding and management of the lake’s ecological health and the habitats it supports. Comparing today’s water level to the median for this calendar day over the station’s 16 years of historical record offers context and reliability in assessing conditions. This measurement approach, utilized by the Water Survey of Canada, provides a robust perspective on current water levels beyond mere elevation readings, ensuring that cottagers, anglers, and others who rely on Lac la Croix are informed about the lake’s changing dynamics.
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
