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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.

West River at Riverdale Water Level

Live river level, flow, historical records and forecast for West River at Riverdale in Canada, PE, Canada, built from official government gauge data.

About West River at Riverdale

West River - A flowing artery of Central Prince Edward Island.

The West River winds its way through the heart of Prince Edward Island, providing a vital source of nourishment to the surrounding landscape. This river, measured at the Riverdale gauging station, draws from a drainage area of approximately 70.2 square kilometres, showcasing the interconnected nature of its watershed. The West River is part of the Central Prince Edward Island - Hillsborough watershed, with notable peers like Coles Creek and the Winter River, hinting at the rich hydrological network that defines this region.

The watershed context

This area benefits from Atlantic island hydrology, characterized by rain and snowmelt, ensuring a reliable water supply. The West River flows with a steady baseflow, largely sustained by groundwater, which helps maintain its health even during drier periods. A brief spring freshet marks the beginning of the water year, when meltwater and rainfall contribute to the seasonal swelling of the river. As summer approaches, evaporation and reduced inflow typically lead to gradual declines in flow, a natural rhythm in this picturesque landscape.

Why the data matters here

Monitoring the West River at Riverdale is vital for understanding the ecological health and water availability in the region. Today's reading reflects current conditions and adds essential context by comparing it to the historical median for this calendar day over the past 39 years. This method provides a more meaningful perspective than just the raw elevation, helping assess if flows are within expected ranges and informing local cottagers, anglers, and farmers about the river’s status. The station, operated by Water Survey of Canada, offers critical insights into both the dynamics of the West River and the health of the broader watershed.

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