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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.

Flat River near the Mouth Water Level

Live river level, flow, historical records and forecast for Flat River near the Mouth in Canada, NT, Canada, built from official government gauge data.

About Flat River near the Mouth

Flat River - a vital waterway in the subarctic landscape.

Flowing through the Northwest Territories, the Flat River near the Mouth is an essential part of the local hydrology and ecology. With a substantial drainage area of approximately 8,520 square kilometres, this river plays a critical role in the surrounding environment, offering a vital water source amidst the harsh northern climate.

The watershed context

The Flat River meanders through a primarily subarctic landscape, where its hydrology is shaped by the seasonal rhythms of the region. Spring breakup and snowmelt dominate the annual cycle, leading to a rapid rise in water levels. This period can also be marked by ice-jam flooding, highlighting the dynamic nature of the river during transition seasons. In contrast, long winter months see low flows under ice, transforming the river into a more constrained waterway until the thaw awakens it again. The swift and intense summers see brief bursts of activity, after which flows tend to decline naturally as warmer temperatures induce evaporation and reduce inflow.

Why the data matters here

For those monitoring the Flat River, understanding its hydrological patterns is crucial. Today's readings provide essential context compared to the historical median for this day—information compiled over more than 48 years by the Water Survey of Canada. This data offers a solid baseline for evaluating current conditions, illustrating the river's responsiveness to both seasonal changes and long-term climatic trends. By analyzing these levels against the median, stakeholders can better prepare for the seasonal shifts that define life in this northern region.

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