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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.

South Nanaimo River near Junction Water Level

Live river level, flow, historical records and forecast for South Nanaimo River near Junction in Canada, BC, Canada, built from official government gauge data.

About South Nanaimo River near Junction

South Nanaimo River - An essential waterway of South Central Vancouver Island.

The South Nanaimo River flows gracefully through the landscapes of South Central Vancouver Island. As part of this vibrant ecological region, it plays a crucial role in the water dynamics, supporting not only the natural ecosystem but also the local community that relies on its resources.

The watershed context

This river's catchment encompasses roughly 206 square kilometres, capturing the rainfall and snowmelt from the surrounding mountains. The region experiences a typical mountain hydrology, where the freshet is driven by snowpack, often peaking between May and July. This seasonal rise in water levels is vital for maintaining river flows during the drier months. As the snow melts and the rains underscore the landscape, the South Nanaimo River connects with its peers—rivers such as the Ash River, Browns River, and Englishman River—enriching the local hydrology.

Why the data matters here

Monitoring the South Nanaimo River is crucial for understanding the health and stability of this waterway. Today’s gauge reading provides an important insight into the river's current state compared to historical data. When assessing the reading against the median for this calendar day, we gain clearer insights into the river’s seasonal behavior and fluctuations. The Water Survey of Canada (WSC) operates the gauge, which has been in place for more than 27 years, helping to track the river's fluctuations and providing vital data for various stakeholders including anglers, cottagers, and those interested in flood monitoring.

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