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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Shelter Valley Brook near Grafton Water Level
Live river level, flow, historical records and forecast for Shelter Valley Brook near Grafton in Canada, ON, Canada, built from official government gauge data.
- Location Canada, ON, Canada
- Watershed ganaraska
- Primary gauge 02HD010 (Water Survey of Canada)
About Shelter Valley Brook near Grafton
Shelter Valley Brook - a tributary weaving through the Ganaraska landscape.
Shelter Valley Brook, located near the small community of Grafton, serves as a vital waterway within the Ganaraska watershed. This river measures the hydrology of a catchment that covers approximately 63.5 square kilometers upstream of the monitoring station, reflecting the interplay between local rainfall and seasonal snowmelt. The brook flows into a diverse ecological area that connects to several other noteworthy streams and rivers, including Baltimore Creek and the Ganaraska River, highlighting its importance in the broader network of waterways.
The watershed context
The Ganaraska watershed encompasses a range of tributaries and river systems that contribute to the hydrology of the area. Shelter Valley Brook, with its seasonal flows, plays a crucial role in sustaining the environment during various times of the year. The region is characterized by snowmelt-driven seasonal hydrology, typically leading to a spring freshet from late April to May when melting snow swells the water levels. Following this period, natural drawdown occurs during the summer months from July to September, as evaporation reduces water levels and inflow decreases. Old-winter decline sets in as the brook freezes over, signifying the cyclical nature of water in this landscape.
Why the data matters here
Understanding the data from the Shelter Valley Brook gauge is essential for assessing the river's health and the surrounding ecosystem. The station, which measures both water level and discharge, enables local stakeholders, such as farmers, cottagers, and naturalists, to monitor water conditions that may impact their activities. Today's reading provides insight into the current state of Shelter Valley Brook in relation to historical patterns. By comparing the current water level against the median for this calendar day over a historical record spanning more than 50 years, we can identify potential deviations and trends that may warrant attention. This comparison, performed by the Water Survey of Canada, ultimately provides valuable context for understanding the brook's ongoing flow and health within the Ganaraska watershed.
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
