You might be surprised or not, that in excess of 90% of fresh water in the UK is within the landmass of Scotland, where it is perhaps best to understand a bit about the importance of drainage..
That would be on AND above the ground.
I suspect many of us have experienced both!
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly '09 Gen2 MINI Cooper ragtop '90 LR 90 SW