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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Don River at Todmorden Water Level
Live river level, flow, historical records and forecast for Don River at Todmorden in Canada, ON, Canada, built from official government gauge data.
- Location Canada, ON, Canada
- Watershed humber don
- Primary gauge 02HC024 (Water Survey of Canada)
About Don River at Todmorden
Don River - A vital urban waterway.
The Don River meanders through Toronto, hosting a dynamic ecosystem amidst the city’s vibrant landscape. At the Todmorden gauge, this stretch of the Don River reflects a blend of urban influence and natural hydrology, underscoring the complexities of managing a watershed that serves both ecological and community needs.
The watershed context
The Don River falls within the Humber - Don watershed, which encompasses an area of approximately 321 square kilometres draining into this river segment. This part of the river network, along with its peers such as Black Creek and the Don River's East and West Branches, plays a crucial role in linking communities and providing critical habitat for various species. Through the year, the river experiences significant seasonal changes, largely influenced by snowmelt-driven hydrology. Residents can expect higher flows during the spring freshet of late April to May, followed by a natural summer drawdown from July to September as evaporation and reduced inflow take hold. Subsequent early-winter declines arise as ice begins to form, establishing a distinct rhythm to the river's water levels.
Why the data matters here
Daily readings from the Don River at Todmorden provide essential insights for various stakeholders, including residents, city planners, and environmental groups. Today’s reading is essential in understanding current conditions and comparing them to historical patterns, as it allows for the evaluation of changes in water levels over time. The figures from this gauge are compared against the median for this calendar day over 48 years of recordkeeping by the Water Survey of Canada. This context is vital: beyond just a single numeric reading, such comparisons help illuminate broader trends and inform decisions, whether for flood monitoring, ecological restoration, or recreational planning.
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
