Medway River at London Water Level
Live river level, flow, historical records and forecast for Medway River at London in ON, Canada, built from official government gauge data.
- Location ON, Canada
- Watershed upper thames
- Primary gauge 02GD008 (Water Survey of Canada)
About Medway River at London
The Medway River sits in the Upper Thames watershed in Ontario.
Season by season
Late spring is the main rising period on this river, but the record seasonal pattern puts the highest typical month in March at 3.84 m (12.58 ft). The lowest typical month is September at 3.5 m (11.5 ft), and the typical annual swing is 33.1 cm (13 in). For anyone with a dock, intake, or shallow reach to watch, that is a modest seasonal range rather than a large one.
The regional rhythm still matters: spring freshet tends to build toward late April and May, summer usually settles lower through July to September, and early winter can ease down as ice forms. On this station, the monthly record tells the story more plainly than the season label alone.
Records and rises
The highest level in the record is 5.86 m (19.24 ft) in February 2009. The lowest is 3.42 m (11.2 ft) in July 2022. Those two points frame what this gauge can do: a winter high well above the usual monthly range, and a summer low that sits below the typical September level.
The station has about 80 years of record, so those extremes have some weight behind them. No fastest 24-hour rise is listed here, so there is no short warning-time number to read from the page.
Reading the hero number
The hero number on this page is most useful when you read it against the median for the same calendar day across the station record, not as a raw height on its own. That comparison shows whether the river is running high or low for this date, which is what matters for access, intake depth, and flood watch.
This station is a Water Survey of Canada gauge, and the day-of-year median gives a better local reference than a single elevation reading because it accounts for the river’s usual seasonal pattern at this site.
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 lakes and rivers across Canada, the US and the UK
Real-time water levels, forecasts, and alerts for lakes and rivers across Canada, the US and the UK. Built on official government data.
Nibi Metrics tracks more than 13,000 gauged lakes and rivers across Canada, the United States and the United Kingdom, reading directly from official federal monitoring networks: the Water Survey of Canada, the United States Geological Survey, Quebec's provincial hydrometric network, and the Environment Agency for England. 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.
Water Stories
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The science of snow water equivalent and why it drives the season ahead.
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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.
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How every number is computed - About the platform
