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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.

Grand Lake Water Level

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

About Grand Lake

Grand Lake - a key feature in the Humber watershed.

Located in Newfoundland and Labrador, Grand Lake is an essential water body in the Humber - Upper watershed. This lake stands out among its peers, with Boot Brook, Lewaseechjeech Brook, and Sheffield Brook nearby, contributing to the rich hydrological mosaic of the area.

The watershed context

Grand Lake drains a significant area of roughly 4,860 square kilometres above the station. This expansive catchment plays a crucial role in the overall health and flow dynamics of the Humber watershed. The region's Atlantic hydrology is marked by the seasonal rhythm of spring snowmelt and rainfall from storms during fall and winter, which can lead to fluctuating water levels and invigorate the surrounding ecosystem.

In spring, as the snow melts, the runoff contributes to the lake's levels and supports the life found in and around these waters. During the fall and winter, storms can lead to rain floods that impact area hydrology, with lakes like Grand Lake acting as natural basins to moderate flows and maintain balance in the environment.

Why the data matters here

Monitoring the water levels at Grand Lake is essential for understanding the area's hydrology and managing the ecosystem effectively. Today's reading helps paint a clearer picture of lake conditions in relation to its historical record, as it compares the current elevation to the median for this calendar day over the past 38 years. This context provided by the Water Survey of Canada ensures that any environmental changes can be assets rather than liabilities for local communities and natural habitats.

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