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.
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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.
Coldwater River at Coldwater Water Level
Live river level, flow, historical records and forecast for Coldwater River at Coldwater in Canada, ON, Canada, built from official government gauge data.
- Location Canada, ON, Canada
- Watershed nottawasaga
- Primary gauge 02ED007 (Water Survey of Canada)
About Coldwater River at Coldwater
Coldwater River - A lively tributary of the Nottawasaga.
The Coldwater River flows through the charming community of Coldwater, Ontario, showcasing a dynamic hydrology that responds keenly to seasonal changes. Draining roughly 168 square kilometres above the station, this river is part of the larger Nottawasaga watershed, which connects with multiple other waterways in the region, such as the Boyne River and Hogg Creek.
The watershed context
The Coldwater River, notable for its vibrant spring freshet occurring in late April to May, is a key component of the Nottawasaga watershed. With its snowmelt-driven seasonal rhythm, the river's flow is typically robust in the spring, only to gradually recede during the natural summer drawdown that spans from July to September. As early winter approaches and the ice begins to form, the river experiences a decline, characteristic of seasonal patterns seen throughout Ontario water bodies.
Why the data matters here
Monitoring the Coldwater River at this gauge offers valuable insights into its flow characteristics and how they relate to the overall health of the watershed. The data provides crucial knowledge for local anglers, cottagers, and those invested in water management. Today, the river's grip on its flow is measured against the historical median for this calendar day. Today's reading is vital for understanding current conditions and contrasts with past trends, which can give a clearer picture of natural variations over time. This data is provided by the Water Survey of Canada, which oversees the readings for more than 49 years of historical data at this location.
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
