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.
Marble Lake Water Level
Live lake level, flow, historical records and forecast for Marble Lake in Frontenac, ON, Canada, built from official government gauge data.
- Location Frontenac, ON, Canada
- Watershed central ottawa mississippi
- Primary gauge 02KF016 (Water Survey of Canada)
About Marble Lake
Marble Lake - A key feature in the Central Ottawa - Mississippi watershed.
Marble Lake lies in the heart of Frontenac, Ontario, serving as an essential water body within the Central Ottawa - Mississippi watershed. This lake contributes to a network that influences the hydrology of the surrounding area, connecting with notable peers like Bennett Lake, Sharbot Lake, and the larger Mississippi River system. The lake is characterized by its seasonal dynamics, shaped by an annual cycle that reflects the broader patterns of the region.
The watershed context
The watershed of Marble Lake encompasses approximately 358.6 square kilometres, draining a significant area to support the lake's health and that of its ecosystem. This region is driven largely by snowmelt during the spring, creating a pronounced freshet typically occurring in late April and May. Following this period, natural water levels decline during the summer months due to evaporation and lower inflows. As winter approaches, a gradual decline occurs as ice begins to form, further altering the lake's hydrological character.
Marble Lake stands among its peers both as a recreational space and as a vital ecological habitat. Its connections to other water bodies like the Mississippi River at Appleton reflect a vibrant network that supports various aquatic life. This interconnectedness plays an important role in maintaining the health of the watershed, ensuring that the hydrological cycles benefit both aquatic ecosystems and surrounding communities.
Why the data matters here
Monitoring the water levels at Marble Lake is crucial for understanding its current status and how it compares to historical norms. The gauge measuring the Mississippi River below Marble Lake provides valuable insights into this lake's water levels. Analyzed over more than 24 years, today's reading offers a benchmark against the median level for this calendar day. By comparing this information, we can better understand the lake's health and the hydrological variability it experiences, as informed by the Water Survey of Canada. This data is vital not only for environmental management but also for those who rely on the lake for recreation and livelihoods.
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
