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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.

Oxtongue River near Dwight Water Level

Live river level, flow, historical records and forecast for Oxtongue River near Dwight in Ontario, ON, Canada, built from official government gauge data.

About Oxtongue River near Dwight

Oxtongue River - a vital conduit flowing through Ontario's Muskoka region.

The Oxtongue River near Dwight is an essential waterway in Ontario's Muskoka region, known for its dynamic relationship with the seasonal changes of the area. This river serves not only as a critical habitat for various aquatic species but also as a resource for local communities and recreation activities. With a drainage area of roughly 603 square kilometres above the station, the river captures runoff and influences water levels significantly.

The watershed context

This river is a part of the vibrant Muskoka watershed, where it connects with several notable peers, including Big East River, Fairy Lake, and Lake Muskoka. Each of these waterways contributes to the rich biodiversity and ecological interactions in the region. Seasonal variability is prominent—snowmelt fuels the annual spring freshet, typically occurring from late April to May, driving higher flows through the Oxtongue River. This runoff is vital for supporting aquatic life and maintaining habitats.

During the summer months, the river experiences a natural drawdown due to evaporation and reduced influx, while early winter brings a decline as ice begins to form. These seasonal patterns are crucial for understanding the river's ecological and hydrological processes.

Why the data matters here

The Oxtongue River station measures both water levels and discharge, which are tracked by the Water Survey of Canada. As part of its historical record spanning over 43 years, today's reading can be compared to the median for this calendar day. This comparison provides a more insightful understanding of current conditions, highlighting any significant deviations that may indicate changes in the hydrology or ecosystem health.

Understanding how today's flow measures up against historical norms helps inform local residents, cottagers, and conservationists about the river's status and assists in making responsible water management decisions.

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