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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.

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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

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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.

Tobin Lake Water Level

Live lake level, flow, historical records and forecast for Tobin Lake in Canada, SK, Canada, built from official government gauge data.

About Tobin Lake

Tobin Lake - a snowmelt haven in the Upper Saskatchewan watershed.

Nestled in the heart of Saskatchewan, Tobin Lake offers a vital water source for the surrounding ecosystem and communities. This lake is part of the Upper Saskatchewan watershed, serving as an important resource for various activities, including fishing and recreational boating. With a hydrological catchment stretching over 276,000 square kilometers, it plays a key role in the regional water cycle.

The watershed context

Tobin Lake stands as a notable feature in the Upper Saskatchewan watershed. The lake feeds into the Saskatchewan River, which flows onwards to support the economic and ecological needs of the entire region. As a snowmelt-dominated system, the water levels in Tobin Lake typically rise sharply in spring, following the thaw. This seasonal rush often leads to a significant peak at the beginning of the melt season. During the summer months, however, the lake experiences a period of natural recession as evaporation increases and inflows diminish, a common characteristic of prairie hydrology.

Why the data matters here

Monitoring water levels at Tobin Lake is crucial for understanding the health and dynamics of the local ecosystem. The data provided by the station at the spillway allows us to gauge current water levels in relation to historical norms. Today's reading offers a window into these dynamics by comparing against the median for this calendar day over the last 49 years, as recorded by Water Survey of Canada. This context is essential for local stakeholders, allowing them to make informed decisions regarding water use, conservation efforts, and preparations for potential floods or droughts.

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