In the UK last month we had the highest rainfall of any month ever, with a month's worth of rain falling in about 48 hours - and it doesn't seem to have stopped since.
The river in the picture is not supposed to be there!
I wonder if there was an old water course way there long ago, and the rain has caused it to 'reopen' as it were? It seems to be following a natural depression, so it's that or a path maybe?
There's no path there, it could well have been a water course. There is an existing river nearby, and having looked on a map, there seems to be a gap which this water could well be filling in.
It's pretty cool when this happens. There's a stream near me that only appears when it rains. Disappears back under the ground when it stops. You'd never know it was there. The memory of water, hidden by the ground, ready to be remembered as soon as the rain drops start to fall.