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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Rouge River near Markham Water Level
Live river level, flow, historical records and forecast for Rouge River near Markham in Canada, ON, Canada, built from official government gauge data.
- Location Canada, ON, Canada
- Watershed humber don
- Primary gauge 02HC022 (Water Survey of Canada)
About Rouge River near Markham
Rouge River - A winter's breath on urban waters.
The Rouge River near Markham flows through a landscape characterized by both natural beauty and urban development. As it winds its way through Ontario, it serves as a notable feature of the Humber-Don watershed. With a drainage area of approximately 183 square kilometers feeding into this segment of the river, it plays a crucial role in managing local hydrology, particularly influenced by snowmelt and seasonal changes.
The watershed context
Situated in the Humber-Don watershed, the Rouge River is part of a network that includes notable peers like Black Creek and multiple branches of the Don River. Each river in this watershed interacts with similar hydrological dynamics, particularly during the spring freshet, which often occurs from late April to May. During this time, the melting snow contributes significantly to flow levels, with the river swelling to accommodate the spring runoff.
As the seasons transition, the river experiences a natural drawdown from July to September, where evaporation and reduced inflow take their toll. Early winter also brings a decline in flow as ice begins to form on the river’s surface. Each seasonal change presents a different character and ecological opportunity along this waterway, shaping the environment that both aquatic life and local communities depend upon.
Why the data matters here
Understanding the hydrological data from the Rouge River near Markham is essential, especially as climate patterns continue to fluctuate. The current reading, measured at the gauge, offers insight into the river's flow relative to historical trends. Today's flow can be accurately compared against the median for this date over its 49 years of record, providing a clearer picture of water levels beyond just the elevation. By doing so, users can better anticipate flooding risks or understand drought conditions.
The data from the Water Survey of Canada aids in capturing the river’s behavior across the hydrological year, enabling thoughtful management and conservation efforts. As we monitor these readings, we can gain valuable insights that inform efforts to protect the ecological integrity of the Rouge River, ensuring it remains a vital asset for both nature and the communities it supports.
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
