I'm sure a lot of us use the "Flood information service" on GOV.UK.
Here's my local one at Bewdley.
It's great for checking the height of a river but unfortunately, the folks in charge have decided to play with the page layout again and have removed the normal range data.
Without that, it's impossible to work out how high or low the river is if you're not intimately familiar with a particular gage - A typical summer low river at Bewdley has the river 19cm above the site datum but if you don't know that, the data provided by the gage is useless.
There is regularly an invitation to provide feedback when you access these pages, I suggest people use it.