River Ravensbourne at Bromley Water Level
Live river level, flow, historical records and forecast for River Ravensbourne at Bromley in England, United Kingdom, built from official government gauge data.
- Location England, United Kingdom
- Primary gauge ea-4320TH (Environment Agency)
About River Ravensbourne at Bromley
River Ravensbourne at Bromley is a gauged river in England.
What the record shows
This station has 20 years on record, which is enough to show a clear seasonal pattern and a few sharp outliers.
The highest level in the record is 0.35 m (1.14 ft), reached in December 2019. The lowest is -0.02 m (-0.08 ft), reached in August 2012. That range matters for anyone using the river edge, because the water has shown it can sit close to zero in late summer and still reach a much higher mark in winter.
Seasonally, the river is highest in January at 0.1 m (0.33 ft) and lowest in July at 0.04 m (0.12 ft). The typical annual swing is 6.3 cm (2.5 in). For a dock, bank access point, or intake, that is the span to expect from the steady seasonal cycle, separate from the record peaks and dips.
The watershed
No watershed name is given for this page, so the useful picture is the river’s own rhythm. In temperate hydrology, spring peaks are often driven by snowmelt or rainfall, and summer low water is common. Here, the record fits a low-summer pattern, with July as the lowest month and January as the highest month.
For people living beside the river, that means winter and early-year levels deserve the most attention, while late summer is the period when shallow margins and access points are most likely to run low. The record low in August 2012 shows that summer drawdown can reach below the usual range.
Reading the hero number
The number on the page is best read against the median for this calendar day at this station, not against the absolute record high or low. Raw elevation alone can look large or small without telling you whether it is normal for today.
That context is what makes a daily reading useful for cottagers, anglers, and flood-watchers. A level near the day’s median suggests ordinary conditions for this time of year. A reading well above or below that median points to unusual water for the date, even if it is still far from the record marks.
The data here come from the Environment Agency, and the 20-year record gives enough history to compare today’s reading with the station’s usual day-by-day pattern.
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
Field notes and explainers from the Nibi desk - how to read a staff gauge, what a 100-year flood actually means, how snowpack becomes summer water.
For five years, spring 2019 was the mark every Lake Muskoka decision answered to. In April 2026 the lake went two centimeters higher - and the official books have not caught up yet.
Inside the freshet cycle that puts Manitoba shorelines at risk each year - and why 2026 broke the script.
The science of snow water equivalent and why it drives the season ahead.
What the numbers on the measuring stick actually tell you.
Why Central and South Texas rivers go from gravel beds to fifty-year records in an afternoon - including July 2026 on the Nueces.
One percent, every year, forever - unwrapping hydrology's most misunderstood phrase, and how it differs from our own percentiles.
How every number is computed - About the platform
