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
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.
Inside the freshet cycle that puts Manitoba shorelines at risk each year - and why 2026 broke the script.
The science of snow water equivalent and why it drives the season ahead.
What the numbers on the measuring stick actually tell you.
Why Central and South Texas rivers go from gravel beds to fifty-year records in an afternoon - including July 2026 on the Nueces.
One percent, every year, forever - unwrapping hydrology's most misunderstood phrase, and how it differs from our own percentiles.
Tay River in Perth Water Level
Live river level, flow, historical records and forecast for Tay River in Perth in Canada, ON, Canada, built from official government gauge data.
- Location Canada, ON, Canada
- Watershed rideau
- Primary gauge 02LA024 (Water Survey of Canada)
About Tay River in Perth
Tay River in Perth - A vital waterway of the Rideau watershed.
The Tay River flows through the heart of Perth, Ontario, offering a dynamic link within the larger Rideau watershed. With a drainage area of roughly 677 square kilometres above the station, this river is integral not only to the local ecosystem but also to the communities that live alongside it.
The watershed context
As a key feature of the Rideau watershed, the Tay River contributes to an intricate network of waterways that includes notable peers such as Kemptville Creek and various segments of the Rideau River itself. This area experiences a snowmelt-driven seasonal hydrology, with the spring freshet typically occurring from late April into May. During this time, water levels rise significantly due to melting snow, facilitating the movement of nutrients and providing essential habitat for aquatic life.
As summer approaches, natural drawdown begins in July and continues through September, leading to lower water levels. This seasonal rhythm is a critical factor for both the ecosystem and the communities relying on the river for activities such as fishing, boating, and irrigation.
Why the data matters here
Today's reading from the Tay River in Perth reflects the latest hydrological conditions compared against the median for this calendar day over more than 31 years of records available from the Water Survey of Canada. Understanding how current water levels stack up against historical data helps residents and local stakeholders make informed decisions regarding water use and management. Gauges like this one not only record elevation but also inform about flow, aiding in flood forecasting and resource planning.
Monitoring these hydrological changes is crucial for maintaining the ecological balance and ensuring that the Tay River continues to support both the local environment and the economic activities of Perth and its surrounding areas.
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
