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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.

Slave River at Fitzgerald Water Level

Live river level, flow, historical records and forecast for Slave River at Fitzgerald in Canada, AB, Canada, built from official government gauge data.

About Slave River at Fitzgerald

Slave River - A vital artery of the Central Slave watershed.

The Slave River at Fitzgerald is an impressive watercourse located in Alberta, Canada. It plays a crucial role in the Central Slave watershed, as it drains an extensive area of approximately 612,000 square kilometres. This vast catchment underscores the river’s importance in regional hydrology and its influence on water levels and flow patterns downstream.

The watershed context

The Slave River flows through a dynamic landscape shaped by the interplay of mountain snowmelt and seasonal precipitation. As snowpack from the surrounding foothills melts in late spring, it contributes to significant peak flows. Conversely, summer convective storms can produce rapid increases in river levels, reflecting the unpredictable nature of the hydrological cycle in this region. Such seasonal variations affect local ecosystems, fishing activities, and land use in the surrounding areas.

Why the data matters here

Ongoing monitoring of the Slave River at Fitzgerald provides critical information for various stakeholders, from cottagers to farmers. Today’s gauged water level is assessed against the median for this particular calendar day based on 49 years of historical data from the Water Survey of Canada. This context is invaluable as it offers insights into trends and anomalies in water flow, which are more reliable than raw elevation readings alone. Understanding these shifts helps inform water management practices and supports ecological health as well as community needs along the river.

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