Scraping the Flood (or another reason to code)

The River Thames has spilled into the flood plain (which is what flood plains are for) and the local footpaths now look like this:

Thames flooding between Benson and Wallingford

Being generally inquisitive, and also wondering when I’ll be next able to walk into Wallingford, it would be useful to know whether the river is rising or falling. Is there an easier way that walking down to the river every couple of hours with a depth gauge?

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