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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.

Seymour River above Lakehead Water Level

Live river level, flow, historical records and forecast for Seymour River above Lakehead in Canada, BC, Canada, built from official government gauge data.

About Seymour River above Lakehead

Seymour River above Lakehead - a dynamic mountain river.

Nestled within the striking landscape of British Columbia, the Seymour River flows gracefully above Lakehead. This river serves as a vital conduit in the intricate watershed network of the Strait of Georgia - Squamish, where it contributes to the diverse hydrology characterizing the region.

The watershed context

Draining an area of approximately 82 square kilometres, the Seymour River draws from the surrounding mountains, reflecting the region's typical mountain hydrology. The river's flow pattern is heavily influenced by seasonal snowpack; freshet occurs in the spring months, often peaking from May to July. During this time, the melting snow feeds the river, giving it a robust flow as warmer weather sets in. Unlike many rivers that might experience reduced flow during the summer due to evaporation and low inflow, the Seymour benefits from the persistent presence of glacial melt, which can sustain elevated water levels throughout the summer months, contributing to its vibrant ecology.

Why the data matters here

Current readings from the Water Survey of Canada station at Seymour River above Lakehead provide important insights into the river's condition relative to its historical trends. Each elevation measurement holds significance, especially when compared to the median for this calendar day across 28 years of data. Observing these fluctuations helps cottagers, anglers, and other river users gauge the current state of the river, ensuring they can engage safely and responsibly with this dynamic water body. Understanding the data not only enhances recreational activities but also fosters a deeper appreciation for the river's role in the larger ecosystem of the Strait of Georgia - Squamish watershed.

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