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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.

Southwest Brook at Lewisporte Water Level

Live river level, flow, historical records and forecast for Southwest Brook at Lewisporte in Canada, NL, Canada, built from official government gauge data.

About Southwest Brook at Lewisporte

Southwest Brook - a key tributary of the Exploits watershed.

Nestled within the heart of Newfoundland and Labrador, Southwest Brook at Lewisporte contributes to the diverse hydrology of the Exploits watershed. Draining roughly 63.5 square kilometres above the station, this stream offers a vital resource for the surrounding landscape, supporting local ecosystems and the community's way of life.

The watershed context

The Exploits watershed is an important area for both natural habitats and local water management. Southwest Brook flows through this vibrant system, where various other water bodies, such as the nearby Badger Brook and Beothuk Lake, coexist. The region experiences the typical seasonal changes of Atlantic hydrology, where spring snowmelt leads to increased flows, while fall and winter storms may contribute to rain-driven floods. The presence of lakes and bogs in the area helps moderate these fluctuations, protecting the health of the watershed.

Why the data matters here

Understanding the water levels and flow at Southwest Brook is crucial for various stakeholders, such as local farmers, anglers, and recreational users. The Water Survey of Canada operates the monitoring station for this stream, providing data that can inform water management practices and conservation efforts.

Today's reading from Southwest Brook is compared against the historical median for this day across the station's 36-year record. This context provides a clearer understanding of current conditions, as it allows users to gauge whether the flows are higher or lower than average for this time of year. Such comparisons are vital for anticipating flooding risks and managing water resources effectively.

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