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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

The flood of record that was overtaken

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.

Why the Assiniboine floods every spring

Inside the freshet cycle that puts Manitoba shorelines at risk each year - and why 2026 broke the script.

How snowpack becomes summer water

The science of snow water equivalent and why it drives the season ahead.

Reading a staff gauge like a hydrologist

What the numbers on the measuring stick actually tell you.

Flash Flood Alley: how Texas rivers rise in hours

Why Central and South Texas rivers go from gravel beds to fifty-year records in an afternoon - including July 2026 on the Nueces.

What a "100-year flood" actually means

One percent, every year, forever - unwrapping hydrology's most misunderstood phrase, and how it differs from our own percentiles.

Musquash River at Hwy 400 Water Level

Live river level, flow, historical records and forecast for Musquash River at Hwy 400 in Ontario, ON, Canada, built from official government gauge data.

About Musquash River at Hwy 400

Musquash River - A winding waterway through Ontario's Muskoka region.

The Musquash River at Highway 400 serves as a vital watercourse within Ontario's Muskoka watershed, characterized by its snowmelt-driven seasonal hydrology. As part of a rich tapestry of lakes and rivers, including nearby Big East River and Fairy Lake, the Musquash River plays a crucial role in the local ecosystem and hydrology, contributing to the overall health of the Muskoka region.

The watershed context

Draining roughly 32 square kilometres above the station, the Musquash River weaves through a landscape marked by its lakes, such as Go Home Lake and Lake Joseph, which are well-known local features. This river captures the essence of Ontario's natural changes throughout the year, experiencing distinct seasonal rhythms driven primarily by snowmelt. In late April and into May, fresh waters from melting snow swell the river, a time often known as the spring freshet. As summer approaches, natural drawdown occurs from July through September, leading to lower water levels as evaporation takes its toll.

Why the data matters here

The data recorded at the Musquash River is critical for various stakeholders, from anglers to environmental scientists. Understanding water levels and flow dynamics helps manage recreational activities and inform conservation efforts in this ecologically vibrant region. With nearly 50 years of data available for this station, informed comparisons against historical medians are possible, providing insights not just into current conditions but also into trends and anomalies over time.

Today's reading, when compared to the median for this calendar day across the historical record maintained by Water Survey of Canada, offers a more meaningful context than raw elevation alone. By examining these seasonal markers, we can better appreciate the variability of water levels in the Musquash River and its surrounding environment.

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