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
Nibi Metrics - live water levels, flow, and forecasts for 17,900+ lakes and rivers
Real-time water levels, forecasts, and alerts for lakes and rivers in a growing number of countries. Built on official government data.
Nibi Metrics tracks more than 17,900 gauged lakes and rivers in a growing number of countries, reading directly from official federal monitoring networks: the Water Survey of Canada, the United States Geological Survey, Quebec's provincial hydrometric network, the Environment Agency for England, the Scottish Environment Protection Agency, Natural Resources Wales, the Office of Public Works in Ireland (waterlevel.ie), the Norwegian Water Resources and Energy Directorate (NVE), the State of Queensland's water monitoring network, and on the Great Lakes the Canadian Hydrographic Service and NOAA. Every number on the platform is measured, not modelled - taken from a government gauge on the water itself and compared against that location's own historical record for this exact date.
What you can see for any monitored lake or river
The level right now, in feet or metres, updated as the source agency publishes new readings - for many stations that is every five to fifteen minutes. How today compares to typical: every location carries its own typical-for-this-date band built from its historical record, so a reading is never just a number - it is above, below, or near what this water usually does on this calendar day. Which way it is moving: a measured RISING, FALLING, or STEADY verdict computed from the gauge's own recent readings, with the rate of change - the difference between a flood ending and one beginning. What comes next: level forecasts up to 72 hours ahead, driven by the gauge's recent behaviour, upstream water, and quantitative precipitation forecasts, alongside live radar, lightning, and weather for the surrounding region.
Alerts that watch the water for you
Set a threshold on any location - a level, a distance above typical, or a rate of climb - and Nibi emails or notifies you the moment the gauge crosses it. Cottagers use it for spring freshet, anglers for river conditions, marinas and municipalities for operations. The scanning runs around the clock against the same measured data shown on every page.
Where Nibi comes from
Nibi means water in Anishinaabemowin. The platform began at a family cottage on Lake Muskoka, Ontario, where the spring melt floods the shoreline most years and the only forecast was standing on the dock, looking, and guessing. It grew into an independent, member-funded platform run by Muskoka Research Inc. - no investors, no data resale, and a privacy policy shorter than most cookie banners. The core data is free for everyone, forever; paid plans add automation like multi-location alerts, deep history, and reports.
Coverage
Nibi spans the continent: every Canadian province and territory with active federal gauges - from Vancouver Island rivers to the Muskoka lakes, prairie reservoirs, and Quebec's hydrometric network - and the United States from Maine to the Texas Hill Country, the Ohio Valley, and the Pacific Northwest. Coverage grows where the water news is: when a basin floods, its gauges join the platform with their full historical records attached. Many stations report every five to fifteen minutes; most report at least hourly; every page states exactly when its gauge last spoke.
Free forever, funded by members
The core promise is simple: the water data is free, for everyone, forever. Live levels, maps, radar, and recent history never sit behind a paywall. Paid plans fund the platform by adding automation - multi-location alerts, decades of history, longer forecasts, and PDF reports - so the people who need more carry the cost for everyone who just needs to check the lake before driving up. There are no investors and no advertising deals shaping what the data says.
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