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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Graham Creek at Nepean Water Level
Live river level, flow, historical records and forecast for Graham Creek at Nepean in Canada, ON, Canada, built from official government gauge data.
- Location Canada, ON, Canada
- Watershed central ottawa mississippi
- Primary gauge 02KF015 (Water Survey of Canada)
About Graham Creek at Nepean
Graham Creek - A modest tributary of the Central Ottawa watershed.
Graham Creek flows through the charming landscape of Nepean, Ontario, draining approximately 22.1 square kilometres above the monitoring station. As a tributary within the Central Ottawa - Mississippi watershed, it connects with several notable water bodies, including Bennett Lake, Dalhousie Lake, and the Mississippi River, enhancing the hydrological tapestry of the region.
The watershed context
The Central Ottawa - Mississippi watershed is marked by a snowmelt-driven seasonal cycle, with a prominent spring freshet typically occurring between late April and May. This seasonal rhythm brings a burst of water flow as melting snow contributes to the creek's vitality, nurturing the surrounding ecosystem during a crucial period of the year. As summer approaches, Graham Creek experiences natural drawdown from July through September, characterized by reduced inflow and increased evaporation. This cyclical pattern leads to a gradual decline in flow as ice begins to form during the early winter months, making the creek an important seasonal feature of Nepean's landscape.
Why the data matters here
Monitoring data from the Water Survey of Canada indicates how Graham Creek's flow and level fluctuate over time. With 38 years of historical data available, users can assess the creek's conditions relative to median values for this calendar day, providing context to daily readings. Today's reading is relevant not just as a momentary snapshot but in relation to the longer-term averages established from years of consistent observation. By comparing current water levels against these historical medians, stakeholders in Nepean, including cottagers and anglers, gain valuable insights into the creek's health and flow consistency, which is critical for both recreational activities and environmental management.
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
