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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St. Mary River near Lethbridge Water Level
Live river level, flow, historical records and forecast for St. Mary River near Lethbridge in Canada, AB, Canada, built from official government gauge data.
- Location Canada, AB, Canada
- Watershed st mary
- Primary gauge 05AE006 (Water Survey of Canada)
About St. Mary River near Lethbridge
St. Mary River - A lifeline in Alberta’s prairie landscape.
The St. Mary River meanders near Lethbridge, Alberta, playing a vital role in the heart of the St. Mary watershed. This river is notable for its substantial drainage area, encompassing approximately 3,000 square kilometres upstream of the gauge. The river’s dynamics are largely influenced by the regional hydrology, where mountain snowmelt in late spring typically drives peak flows, while the summer months can see sharp rises due to convective storms. These patterns feed into the overall health of the river and its ecological surroundings.
The watershed context
The St. Mary River flows through the diverse landscapes of southern Alberta. Its waters not only support the local ecology but also provide essential irrigation for agriculture in the area, particularly important in the dry summer months. Nearby, the Canadian St. Mary Canal near Spring Coulee is an important peer, highlighting the significance of water management in this agricultural region. Given Alberta's foothills and prairie hydrology, the seasonal rhythm sees fluctuating water levels that both shape and are shaped by the environment.
Why the data matters here
Understanding the current conditions of the St. Mary River near Lethbridge is essential, especially as it has a record spanning nearly 50 years. Today’s reading from the Water Survey of Canada indicates how the current water level compares to the historical median for this calendar day. This metric is crucial as it provides context for assessing whether today's levels are typical or unusual, allowing for better-informed responses to changes in flow dynamics due to weather patterns or other influences. By measuring against this historical median, stakeholders can gauge the river's health and anticipate its behaviour throughout the seasons.
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
