What this site actually does with data, in plain terms, rather than a
link out to somebody else's general policy.
Analytics
Google Analytics 4 is used to see which pages are useful and where the
site is slow: page views, roughly which country a visit came from,
device and browser type, and which page led to the next. It runs only
once analytics cookies are accepted, which is covered under
"Change your choice" below.
Nothing in that data identifies a visitor by name, and there is no
account or sign-in anywhere on this site to link it to.
What doesn't happen here
No advertising or personalisation cookies, and no advertising on the site at all.
No data sold or shared with anyone beyond Google Analytics itself.
No tracking across other sites, and no fingerprinting.
No account system, so there is no profile for any of this to attach to.
The feedback survey
The feedback survey is a separate, deliberately
anonymous flow: no IP address, no browser fingerprint, no identifier of
any kind is stored with a response. There is an optional email box for
anyone who would like a reply; it is only used to reply about that
response, and left blank the response stays anonymous. Answers are stored in a private location with no public link,
readable only with the site's own maintenance key.
Change your choice
The analytics choice made on first visit is remembered in this
browser only. To change it at any time:
A new map of every river level gauge the Environment Agency, Natural Resources Wales and SEPA publish, updated every 15 minutes. Each gauge is judged against its own history, from low to exceptional, and each catchment is shaded by how its rivers are responding as a whole. Scrub back through the last two weeks, or open any gauge for its own page with its chart, thresholds and nearby gauges. The homepage now carries a River Levels card with the catchment map and the ten highest gauges.
Compare any model against radar, with a full-page chart
The forecast against radar comparison map now works with every model: UKV, DMI Harmonie, ECMWF HRES and AIFS, GFS, NOAA AIGFS and Met Office Global. Open any area and choose Open full chart to see its rain over time on one large chart: what radar measured, and each forecast run starting from what had already fallen by its run time. Compare the latest runs of one model, or several models side by side, and share the view as a link. The full chart covers runs from 12 October onwards.
Useful?Thanks
New8 Oct
Leave out unreliable rain gauges
Every rain gauge map and table now has a Quality control switch. Turn it on and gauges that the rain gauge check judges likely faulty, such as blocked or stuck ones, are left out of the map, the lists and the totals, for whatever period you are looking at. A small note beside the switch says how many were left out. It is on by default, and you can turn it off.
This application brings together real-time data from multiple sources to help you stay
informed about weather and flood conditions across the UK.
report_problem
Important
This application is unofficial and provided for informational, research, and analysis purposes only. Uptime, data completeness, and real-time accuracy are not guaranteed.
To avoid over-reliance during active weather or flood events, do not make safety-critical decisions using this tool. For official warnings and instructions, consult the primary public services directly:
Google Analytics is used to see which pages are useful and where the site is slow. It's off until you say otherwise, and your choice is remembered. Nothing else on this site sets non-essential cookies, and advertising or personalisation cookies are never allowed.
Analytics is currently on.
You can change this at any time from the Cookie preferences link in the page footer.