Cassley at Rosehall Water Level
Live river level, flow, historical records and forecast for Cassley at Rosehall in Scotland, United Kingdom, built from official government gauge data.
- Location Scotland, United Kingdom
- Primary gauge sepa-234300 (Water Survey of Canada)
About Cassley at Rosehall
Cassley is a gauged river in Scotland.
Season by season
January is the highest month in the record, with a typical level of 0.96 m (3.16 ft). June is the lowest month, with a typical level of 0.62 m (2.03 ft). For anyone drawing water, working a ford, or keeping a bank-side intake clear, that means the river tends to ask most of its winter and spring flows, then settles into a lower summer level.
The seasonal pattern fits a rain-fed river in this part of the world: winter and spring are the times to watch for higher water, while warm-season low water can hold on for longer. The typical annual swing is 34.5 cm (13.6 in), so the reach changes enough through the year to matter, but not in a way that rewrites the channel every season.
Records and rises
The highest level in the record is 2.75 m (9.03 ft) in March 1983. The lowest is 0.38 m (1.26 ft) in June 1982. Those two dates mark the range this station has seen over 47 years, and they are the numbers worth keeping in mind when you are judging how much room the river has left.
That record spread matters because it shows what the Cassley has already done at Rosehall. A high March reading tells you that late-winter and early-spring water can still climb well above the usual January level. The June low shows the other end: by early summer, the river can fall to a level that changes how shallow margins, small boats, and low intakes behave.
Reading the hero number
The hero number on this page is today’s reading against the median for this calendar day, not just the raw water level. That comparison is more useful because it tells you whether the river is running higher or lower than its own usual position for the date, which is what matters for day-to-day decisions.
This station is operated by SEPA, and it has more than 47 years of record behind it. That gives the median a solid base, so the daily comparison is a better guide for cottagers, anglers, and anyone watching the river than a single elevation on its own.
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.
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How every number is computed - About the platform
