The big leak is along mayow rd - been going a good week or 2.
The stream is blocking the drains one by one on the west side, with all the clay and sand it's kicked up and has now blocked the drain on perry vale at the PV crossing at the bottom.
This has created a significant pond in PV and blocked the pavement on both sides.

historical note.
I've always been curious to where the old ex-stream (from what is now the german bridge, past the rose cottages and down woolstone rd), crossed perry vale, because it flowed on the north side of the road, not the south.

Now we know. Like any sensible stream, it crossed at the crossing.
This is very exciting as the resultant muddy track at exactly this point ~200 years ago most likely gave perry vale/slough it's name, in my opinion.