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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.

Fraser River at Port Mann Pumping Station Water Level

Live river level, flow, historical records and forecast for Fraser River at Port Mann Pumping Station in Canada, BC, Canada, built from official government gauge data.

About Fraser River at Port Mann Pumping Station

Fraser River - A vital artery of life and commerce in British Columbia.

The Fraser River at Port Mann Pumping Station plays a crucial role in the Lower Fraser - Coast watershed, acting as a fundamental conduit for water flow and ecological interactions in this vibrant region of British Columbia. With a substantial drainage area of approximately 232,000 square kilometers above the station, this river supports myriad habitats and communities along its course.

The watershed context

The Lower Fraser - Coast watershed is characterized by its dynamic hydrology driven largely by snowmelt freshets occurring from May through July. This annual cycle influences river levels and flow rates, shaping not just the physical environment but also the livelihoods of those who depend on the Fraser River's resources. As the largest river in British Columbia, the Fraser serves as a lifeline for fish species, agricultural lands, and urban settings alike.

Surrounding tributaries, including the Alouette River and Coquitlam River, complement the Fraser's flow, contributing to the overall health and diversity of the watershed. Each of these rivers plays its part in a larger hydrological system that is vital to the ecological and economic landscape of the region.

Why the data matters here

Monitoring water levels at the Fraser River at Port Mann Pumping Station is essential for understanding the river's behavior and health over time. The data provides insights into seasonal changes and helps inform local communities about potential flooding or drought conditions. Today's reading, as reported by the Water Survey of Canada, is compared against the median level for this calendar day across more than 42 years of historical records. Such comparisons are crucial; they allow for assessments of current conditions against long-term trends, providing valuable context that raw elevation figures alone cannot convey.

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