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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.

Saint John River at Saint John Water Level

Live river level, flow, historical records and forecast for Saint John River at Saint John in Canada, NB, Canada, built from official government gauge data.

About Saint John River at Saint John

Saint John River - A vital waterway in New Brunswick.

The Saint John River meanders through New Brunswick, serving as a crucial lifeline for the local environment and communities. Stretching across the province, it is renowned for its role in the Lower Saint John – Kennebecasis watershed, impacting both the natural landscape and the activities of residents.

The watershed context

This gauge, located on the Saint John River in the city of Saint John, captures the important hydrological processes at play. Draining roughly 55,000 square kilometres, the river is part of a larger network that includes peers such as the Canaan River and the Kennebecasis River. These water bodies contribute to the dynamic water conditions in the region. Seasonal rhythms in New Brunswick typically feature a pronounced spring freshet due to snowmelt, with potential ice-jam risks on the major rivers. Fall brings rains that can lead to flooding, while winter presents ice cover that shapes the river's flow patterns. This cyclical nature significantly influences the ecology and the human use of the river.

Why the data matters here

Monitoring the Saint John River is essential for understanding its health and the risks it may pose. Today's reading reflects the current elevation of the river, alongside its historical records spanning over 60 years. This data is particularly meaningful when compared against the median for today's date within that historical context. Such comparisons provide insights into whether current levels are typical or unusual, which aids in effective planning and management. This data is provided by the Water Survey of Canada, ensuring that users and stakeholders are informed of potential fluctuations and trends in this essential waterway.

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